CN109660705B - Intelligent spherical camera and image capturing method - Google Patents
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Abstract
The invention discloses an intelligent spherical camera and an image capturing method, wherein the intelligent spherical camera comprises a control module, a holder, an image acquisition module and a directional antenna, the control module determines the energy of a first wireless signal sent by the directional antenna, determines the comparison result of the energy of the first wireless signal and a preset energy value, and controls the image acquisition module and the holder to act according to the comparison result. In the embodiment of the invention, 360-degree snapshot can be realized only by one image acquisition module and one directional antenna according to the received wireless signal energy, so that the intelligent spherical camera provided by the embodiment of the invention has lower cost.
Description
Technical Field
The invention relates to the technical field of video monitoring and intelligent analysis, in particular to an intelligent spherical camera and an image snapshot method.
Background
In the field of video monitoring, in order to realize 360-degree target monitoring and snapshot, a 360-degree panoramic camera or a ball machine can be adopted for 360-degree cruise, and the 360-degree panoramic camera has relatively high cost, needs a plurality of image sensors, lenses, and also needs a splicing chip and a coding chip with relatively high capacity, and is generally common in high-end application; the 360-degree cruise of the ball machine can realize 360-degree monitoring, but the target cannot be positioned in the cruise process, and the image focusing is not necessarily clear in the cruise process of the ball machine.
Based on the consideration of the problems, the prior art provides an intelligent spherical camera combining a dome camera and directional antennas, the intelligent spherical camera is adopted to realize 360-degree target monitoring and snapshot, a ring is made on the dome camera, a plurality of directional antennas are erected, the plurality of directional antennas realize 360-degree coverage, and the installation position of each directional antenna is close to that of a corresponding image acquisition module. In the practical application process, each directional antenna receives wireless signals and sends the wireless signals to a control module in the intelligent spherical camera, and the control module determines that each directional antenna receives wireless signal energy and controls an image acquisition module corresponding to the directional antenna which receives the wireless signals with larger signal energy to perform image capturing.
Although the smart dome camera in the related art can realize 360-degree target monitoring and capturing, since the smart dome camera in the related art includes a plurality of image capturing modules and a plurality of directional antennas, the cost of the smart dome camera is increased undoubtedly.
Disclosure of Invention
The embodiment of the invention provides an intelligent spherical camera and an image snapshot method, which are used for solving the problem that the intelligent spherical camera in the prior art is high in cost.
The embodiment of the invention provides an intelligent spherical camera, which comprises a control module and a holder, and further comprises: the device comprises an image acquisition module and a directional antenna, wherein the distance between the image acquisition module and the directional antenna is smaller than a preset distance threshold;
the control module is respectively connected with the holder, the image acquisition module and the directional antenna;
the directional antenna is used for receiving a first wireless signal and sending the received first wireless signal to the control module;
the control module is used for determining the energy of the received first wireless signal, determining the comparison result of the energy of the first wireless signal and a preset energy value, and controlling the motion of the image acquisition module and the motion of the holder according to the comparison result.
Further, the preset energy value includes a preset first threshold, and the control module is specifically configured to control the image acquisition module to capture an image if it is determined that the energy of the first wireless signal is greater than the preset first threshold.
Further, the preset energy value further includes a preset second threshold, and the control module is specifically configured to control the cradle head to rotate according to a preset step length if it is determined that the energy of the first wireless signal is greater than the preset second threshold and not greater than the preset first threshold, and receive the second wireless signal currently sent by the directional antenna once the cradle head rotates, and control the image acquisition module to capture an image when the energy of the received second wireless signal is greater than the preset first threshold.
Further, the control module is further configured to, if the cradle head rotates a circle, control the cradle head to rotate to a position where the energy of the second wireless signal is maximum, determine a target magnification of the image acquisition module according to the energy of the second wireless signal at the position and a correspondence table of pre-stored magnification and energy, control the magnification of the image acquisition module to be adjusted to the target magnification, and capture an image, where the energy of the received second wireless signal is greater than a preset second threshold and not greater than a preset first threshold.
Further, the control module is specifically configured to control the image acquisition module not to capture an image if it is determined that the energy of the first wireless signal is not greater than a preset second threshold.
Further, the intelligent dome camera further comprises: the intelligent analysis module and the image reporting module;
the intelligent analysis module is connected with the image reporting module;
the control module is also used for controlling the image acquisition module to acquire a preset number of continuous frame images aiming at each position meeting the requirements of the pan-tilt rotation for the snapshot of the image acquisition module and sending the continuous frame images to the intelligent analysis module;
the intelligent analysis module is used for determining a target object in each frame image in the continuous frame images received at each position by adopting an intelligent algorithm, determining an evaluation value of the target object, and sending the image with the highest evaluation value of the target object in the continuous frame images to the image reporting module;
and the image reporting module is used for sending the received image to a server.
Further, the intelligent analysis module is further configured to, for each position, determine a feature value of each target object after determining an image with the highest evaluation value of the target object at the position, determine a similarity between any two target objects according to the feature value of each target object, regard a target object with the similarity larger than a preset similarity threshold as the same target object, select an image with the highest evaluation value of the target object for each target object, and send the image to the image reporting module.
On the other hand, the embodiment of the invention provides an image capturing method, which comprises the following steps:
the control module receives a first wireless signal sent by the directional antenna and determines the energy of the received first wireless signal;
and determining a comparison result of the energy of the first wireless signal and a preset energy value, and controlling the actions of the image acquisition module and the holder according to the comparison result.
Further, the preset energy value comprises a preset first threshold value;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
and if the energy of the first wireless signal is judged to be larger than a preset first threshold value, controlling the image acquisition module to capture an image.
Further, the preset energy value further comprises a preset second threshold;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
and if the energy of the first wireless signal is judged to be larger than a preset second threshold value and not larger than a preset first threshold value, controlling the cradle head to rotate according to a preset step length, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates, and controlling the image acquisition module to capture an image when the energy of the received second wireless signal is larger than the preset first threshold value.
Further, the controlling the actions of the image acquisition module and the holder according to the comparison result comprises:
and if the holder rotates for a circle, the energy of the received second wireless signal is greater than a preset second threshold and not greater than a preset first threshold, the holder is controlled to rotate to the position where the energy of the second wireless signal is maximum, the target magnification of the image acquisition module is determined according to the energy of the second wireless signal at the position and a corresponding relation table of the prestored magnification and the energy, the magnification of the image acquisition module is controlled to be adjusted to the target magnification, and the image is captured.
Further, the controlling the actions of the image acquisition module and the holder according to the comparison result comprises:
and if the energy of the first wireless signal is judged to be not greater than a preset second threshold value, controlling the image acquisition module not to snapshot an image.
Further, the method further comprises:
the method comprises the steps of controlling an image acquisition module to acquire a preset number of continuous frame images according to each position meeting the requirements of the pan-tilt rotation on the snapshot of the image acquisition module, sending the continuous frame images to an intelligent analysis module, enabling the intelligent analysis module to determine a target object in each frame image in the continuous frame images received by each position by adopting an intelligent algorithm, determining an evaluation value of the target object, and sending the image with the highest evaluation value of the target object in the continuous frame images to an image reporting module.
Further, after the intelligent analysis module determines, for each position, an image with the highest evaluation value of the target object at the position, the method further includes:
the intelligent analysis module determines the characteristic value of each target object, determines the similarity of any two target objects according to the characteristic value of each target object, takes the target objects with the similarity larger than a preset similarity threshold value as the same target object, and selects the image with the highest evaluation value of the target object to send to the image reporting module aiming at each target object.
The embodiment of the invention provides an intelligent spherical camera and an image capturing method, wherein the intelligent spherical camera comprises a control module and a holder, and the intelligent spherical camera further comprises: the device comprises an image acquisition module and a directional antenna, wherein the distance between the image acquisition module and the directional antenna is smaller than a preset distance threshold; the control module is respectively connected with the holder, the image acquisition module and the directional antenna; the directional antenna is used for receiving a first wireless signal and sending the received first wireless signal to the control module; the control module is used for determining the energy of the received first wireless signal, determining the comparison result of the energy of the first wireless signal and a preset energy value, and controlling the motion of the image acquisition module and the motion of the holder according to the comparison result.
In the embodiment of the invention, the control module determines the energy of the received first wireless signal sent by the directional antenna, controls the image acquisition module and the holder to act according to the comparison result of the energy of the first wireless signal and the preset energy value, and controls the image acquisition module and the holder to act according to the comparison result. In the embodiment of the invention, 360-degree snapshot can be realized only by one image acquisition module and one directional antenna according to the received wireless signal energy, so that the intelligent spherical camera provided by the embodiment of the invention has lower cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent dome camera provided in embodiment 1 of the present invention;
fig. 2 is a schematic view of a directional antenna field of view and an image acquisition module field of view provided in embodiment 1 of the present invention;
fig. 3 is a diagram illustrating an energy distribution of a wireless signal received by a directional antenna according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of an intelligent dome camera provided in embodiment 6 of the present invention;
fig. 5 is a schematic diagram of an image capturing process provided in embodiment 8 of the present invention;
fig. 6 is a schematic diagram of an image capturing process provided in embodiment 10 of the present invention;
fig. 7 is a schematic diagram of a detailed process of image capturing according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
fig. 1 is a schematic structural diagram of an intelligent dome camera according to an embodiment of the present invention, where the intelligent dome camera includes a control module 11 and a pan/tilt head 12, and the intelligent dome camera further includes: an image acquisition module 13 and a directional antenna 14, wherein the distance between the image acquisition module 13 and the directional antenna 14 is smaller than a preset distance threshold;
the control module 11 is respectively connected with the holder 12, the image acquisition module 13 and the directional antenna 14;
the directional antenna 14 is configured to receive a first wireless signal and send the received first wireless signal to the control module 11;
the control module 11 is configured to determine energy of the received first wireless signal, determine a comparison result between the energy of the first wireless signal and a preset energy value, and control the image acquisition module 13 and the pan/tilt head 12 according to the comparison result.
As shown in fig. 1, the intelligent dome camera provided by the embodiment of the present invention includes a control module, a pan-tilt, an image acquisition module, and a directional antenna. It should be noted that fig. 1 only shows a connection schematic diagram of each structure in the smart dome camera, and the image acquisition module and the directional antenna in the actual smart dome camera are both located above the pan-tilt, and rotate together with the pan-tilt. Moreover, the control module may be located in the smart dome camera as shown in fig. 1, or may be located in a backend server, and if the control module is located in the backend server, the control module in the backend server implements control over the smart dome camera. In the embodiment of the present invention, the distance between the image capturing module and the directional antenna is smaller than a preset distance threshold, and the preset distance threshold may be a smaller value, which is to ensure that the field of view of the directional antenna is substantially consistent with the field of view of the image capturing module. Specifically, the directional antenna may be located at any position around the image capturing module, as long as the distance from the image capturing module is ensured to be smaller than the preset distance threshold, for example, the directional antenna may be located above or below the image capturing module, and may also be located on the left side and the right side. Fig. 2 is a schematic view of the field of view of the directional antenna and the field of view of the image capture module, as shown in fig. 2, the field of view of the directional antenna and the field of view of the image capture module substantially coincide.
The routing antenna may receive a first wireless signal sent by an associated electronic product carried by a user in a scene, and in the embodiment of the present invention, the related wireless signal may be, but is not limited to, an RFID signal, a wifi sniffer signal, and a Zigbee signal. After receiving the first wireless signal, the routing antenna sends the first wireless signal to the control module. The control module may determine an energy of the received first wireless signal. Fig. 3 is a diagram of an energy distribution of wireless signals received by a directional antenna, where when a first wireless signal received by the directional antenna is from the front of the directional antenna (the direction irradiated by an image capturing module), the energy of the first wireless signal is larger, when the first wireless signal received by the directional antenna is from the side of the directional antenna, the energy of the first wireless signal is smaller, and when the first wireless signal received by the directional antenna is from the back of the directional antenna, the energy of the first wireless signal is the smallest.
The control module may store a preset energy value, and after determining the energy of the received first wireless signal, the control module compares the energy of the first wireless signal with the preset energy value. And controlling the actions of the image acquisition module 13 and the pan/tilt head 12 according to the comparison result of the energy of the first wireless signal and the preset energy value.
When the energy of the first wireless signal is greater than the preset energy value, the image acquisition module 13 can be directly controlled to capture the image, when the energy of the first wireless signal is less than the preset energy value, the pan/tilt head 12 can be controlled to rotate for a circle, and the pan/tilt head 12 receives the wireless signal currently sent by the directional antenna 14 once rotates, and the image acquisition module 13 is controlled to capture the image at the position where the wireless signal is the maximum.
In the embodiment of the invention, the control module determines the energy of the received first wireless signal sent by the directional antenna, controls the image acquisition module and the holder to act according to the comparison result of the energy of the first wireless signal and the preset energy value, and controls the image acquisition module and the holder to act according to the comparison result. In the embodiment of the invention, 360-degree snapshot can be realized only by one image acquisition module and one directional antenna according to the received wireless signal energy, so that the intelligent spherical camera provided by the embodiment of the invention has lower cost.
Example 2:
in order to ensure that the captured image includes the target object, on the basis of the above embodiment, in an embodiment of the present invention, the preset energy value includes a preset first threshold, and the control module is specifically configured to control the image acquisition module to capture the image if it is determined that the energy of the first wireless signal is greater than the preset first threshold.
The preset energy value stored in the control module includes a preset first threshold, where the preset first threshold is a larger value, for example, the preset first threshold is-50 dBm. After the control module determines the energy of the received first wireless signal, if the energy of the first wireless signal is judged to be greater than a preset first threshold value, it can be judged that the approximate position of the target object is located within a certain range in front of the directional antenna, that is, the target object is contained in the current field of view of the image acquisition module, and at this time, the image acquisition module is directly controlled to capture an image. The target object can be ensured to be contained in the captured image.
Example 3:
further, on the basis of the above embodiment, in an embodiment of the present invention, on the basis of the above embodiment, the preset energy value further includes a preset second threshold, and the control module is specifically configured to control the pan/tilt head to rotate according to a preset step length if it is determined that the energy of the first wireless signal is greater than the preset second threshold and is not greater than the preset first threshold, and receive a second wireless signal currently sent by the directional antenna every time the pan/tilt head rotates once, and control the image acquisition module to snap the image when the energy of the received second wireless signal is greater than the preset first threshold.
The preset energy value stored in the control module further includes a preset second threshold, where the preset second threshold is smaller than the preset first threshold, for example, the preset second threshold is-100 dBm. If the control device judges that the energy of the first wireless signal is greater than the preset second threshold and not greater than the preset first threshold, the fact that the approximate position of the target object is located in a certain range at the side or the rear of the directional antenna is shown at this moment, and the cradle head is controlled to rotate according to a preset step length, wherein the preset step length can be 1 degree, 2 degrees and other smaller degrees. In the embodiment of the invention, the wireless signal received by the directional antenna in the rotation process of the holder is used as the second wireless signal. And when the cradle head rotates once, the control module receives a second wireless signal currently sent by the directional antenna and determines the energy of the second wireless signal, and when the energy of the received second wireless signal is greater than a preset first threshold value, the target object is in the current visual field of the image acquisition module, the image acquisition module is controlled to capture the image, and the captured image can be ensured to contain the target object.
Example 4:
in order to make a relatively distant target object in a captured image clear, on the basis of the above embodiment, in an embodiment of the present invention, if the pan/tilt head 12 rotates a circle, the energy of the received second wireless signal is greater than a preset second threshold and is not greater than a preset first threshold, the control module 11 is further configured to control the pan/tilt head to rotate to a position where the energy of the second wireless signal is maximum, determine a target magnification of the image acquisition module 13 according to the energy of the second wireless signal at the position and a pre-stored correspondence table between magnification and energy, control the magnification of the image acquisition module 13 to be adjusted to the target magnification, and capture the image.
In the embodiment of the invention, if the pan/tilt head rotates for one circle, the energy of the second wireless signal received by the control module is greater than the preset second threshold and not greater than the preset first threshold, which indicates that the target object is far away from the image acquisition module. And controlling the pan-tilt head to rotate to the position where the energy of the second wireless signal is maximum. For example, the control module controls the pan/tilt head to rotate a circle according to the step length of 1 degree, so that the control module can receive 360 second wireless signals sent by the directional antenna, for example, when the pan/tilt head rotates to 100 degrees, the energy of the received second wireless signals is maximum, and the pan/tilt head is controlled to rotate to 100 degrees. This time illustrates the direction in which the target object is currently illuminated by the image capture module, but is relatively far from the image capture module.
And after the control module controls the holder to rotate to the position with the maximum energy of the second wireless signal, the target magnification of the image acquisition module is determined according to the energy of the second wireless signal received at the current position and the corresponding relationship table of the magnification and the energy, then the magnification of the image acquisition module is controlled to be adjusted to the target magnification, and the image is captured. Therefore, the target object in the captured image can be clear.
It should be noted that the energy and the corresponding relation table of the magnification and the energy are tested and formulated by the user in advance. Specifically, after the intelligent spherical camera is installed in an application scene, a user enables the directional antenna to receive wireless signals with different energies between a preset first threshold and a preset second threshold by adjusting the distance between the test object and the image acquisition module, adjusts the magnification of the image acquisition module according to the wireless signals with each energy to enable the test object in the image acquired by the image acquisition module to be clearest, records the energy and the magnification enabling the test object in the image acquired by the image acquisition module to be clearest, fills a corresponding relation table, and configures the intelligent spherical camera.
In the embodiment of the invention, the control module is further configured to, if the pan/tilt head rotates for one circle, control the pan/tilt head to rotate to a position where the energy of the second wireless signal is maximum, determine the target magnification of the image acquisition module according to the energy of the second wireless signal at the position and the corresponding relationship table of the prestored magnification and energy, control the magnification of the image acquisition module to be adjusted to the target magnification, and capture the image, where the energy of the received second wireless signal is greater than the preset second threshold and not greater than the preset first threshold. Therefore, even if the target object is far away from the image acquisition module, the target object in the image can still be clear after the magnification is adjusted.
Example 5:
on the basis of the foregoing embodiments, in an embodiment of the present invention, the control module 11 is specifically configured to control the image acquisition module 13 not to capture an image if it is determined that the energy of the first wireless signal is not greater than a preset second threshold.
In the embodiment of the present invention, if the control module determines that the energy of the first wireless signal is not greater than the preset second threshold, it indicates that the target object is far away from the image capturing module, so that even if the image capturing module captures an image, a user cannot acquire related information of the target object in the image.
In each of the above embodiments, when determining the wireless signal energy, the control module may count an average value of the energy of the received wireless signal within a preset time length for the same position, and use the average value as the wireless signal energy of the current position, where the preset time length may be 5 seconds, 7 seconds, and the like.
Example 6:
on the basis of the foregoing embodiments, fig. 4 is a schematic structural diagram of an intelligent dome camera provided in an embodiment of the present invention, where the intelligent dome camera further includes: an intelligent analysis module 21 and an image reporting module 22;
the intelligent analysis module 21 is connected with the image reporting module 22;
the control module 11 is further configured to control the image acquisition module 13 to acquire a preset number of continuous frame images for each position of the pan/tilt head 12, where the position meets the requirements of the image acquisition module for capturing, and send the continuous frame images to the intelligent analysis module 21;
the intelligent analysis module 21 is configured to determine, by using an intelligent algorithm, a target object in each frame of image of the continuous frame of images received at each position, determine an evaluation value of the target object, and send an image with a highest evaluation value of the target object in the continuous frame of images to the image reporting module 22;
the image reporting module 22 is configured to send the received image to a server.
As shown in fig. 4, the intelligent dome camera further includes an intelligent analysis module 21 and an image reporting module 22. In an embodiment of the present invention, the control module is further configured to control the image capturing module to capture a preset number of continuous frame images for each position where the pan/tilt head rotates and satisfies the capturing of the image capturing module, for example, positions where the pan/tilt head rotates 30 degrees and 32 degrees are both positions where the pan/tilt head satisfies the capturing of the image capturing module, and then at the positions where the pan/tilt head rotates 30 degrees and 32 degrees, the control image capturing module is controlled to capture the preset number of continuous frame images, and the control image capturing module is controlled to send the captured preset number of continuous frame images to the intelligent analysis module.
The intelligent analysis module determines a target object in each frame image in the continuous frame images received at each position by adopting an intelligent algorithm and determines an evaluation value of the target object. Among them, the process of determining a target object in an image and determining an evaluation value of the target object belongs to the related art.
The intelligent analysis module can comprehensively determine the evaluation value of the target object by combining the definition, the brightness value and the like of the target object. The intelligent analysis module determines the evaluation value of the target object, then sends the image with the highest evaluation value of the target object in the continuous frame images to the image reporting module, and the image reporting module sends the received image to the server.
In the embodiment of the invention, the intelligent analysis module determines the image with the highest evaluation value of the target object from the continuous frame images, and then the image reporting module sends the image with the highest evaluation value of the target object to the server. Therefore, the characteristic information of the target object in the image stored in the server can be ensured to be more complete, the target object can be more helped to be tracked by a user, the image with the low evaluation value of the target object is not sent to the server, and the redundancy of the server is also reduced.
Example 7:
on the basis of the foregoing embodiments, in the embodiment of the present invention, the intelligent analysis module 21 is further configured to determine, for each position, a feature value of each target object after determining an image with a highest evaluation value of the target object at the position, determine a similarity between any two target objects according to the feature value of each target object, regard the target object with the similarity larger than a preset similarity threshold as the same target object, and select, for each target object, the image with the highest evaluation value of the target object and send the image to the image reporting module 22.
The intelligent analysis module can determine the image with the highest evaluation value of the target object according to each position where the pan-tilt rotates and meets the snapshot of the image acquisition module, and sends the image to the image reporting module, for example, the positions where the pan-tilt rotates by 30 degrees and 32 degrees meet the snapshot of the image acquisition module, and then the intelligent analysis module determines the image with the highest evaluation value of the target object respectively at the positions where the pan-tilt rotates by 30 degrees and 32 degrees.
In the embodiment of the present invention, for each position, after determining the image with the highest evaluation value of the target object at the position, the intelligent analysis module may determine the feature value of each target object, and then determine the similarity between any two target objects according to the feature value of each target object. The process of determining the feature values of the target objects and determining the similarity between any two target objects according to the feature values of the target objects belongs to the prior art, and is not described herein again.
The intelligent analysis module can store a preset similarity threshold, judge whether the similarity is greater than the preset similarity threshold aiming at the similarity of any two determined target objects, and if so, take the two target objects as the same target object. And aiming at each target object, selecting the image with the highest evaluation value of the target object and sending the image to an image reporting module.
In the embodiment of the invention, the intelligent analysis module selects the image with the highest evaluation value of the target object to send to the image reporting module aiming at each target object, and then the image reporting module sends the image with the highest evaluation value of the target object to the server, so that the effect of image duplicate removal can be achieved to a certain extent, and the redundancy of the server is further reduced.
Example 8:
on the basis of the foregoing embodiments, fig. 5 is a schematic diagram of an image capturing process provided in an embodiment of the present invention, where the process includes the following steps:
s101: the control module receives a first wireless signal sent by the directional antenna and determines the energy of the received first wireless signal.
S102: and determining a comparison result of the energy of the first wireless signal and a preset energy value, and controlling the actions of the image acquisition module and the holder according to the comparison result.
The intelligent spherical camera comprises a control module, a holder, an image acquisition module and a directional antenna. The image acquisition module and the directional antenna are both positioned on the holder, and rotate along with the holder, and the image acquisition module and the directional antenna rotate together. The distance between the image acquisition module and the directional antenna is smaller than a preset distance threshold, and the preset distance threshold can be a smaller value, so as to ensure that the field of view of the directional antenna is basically consistent with the field of view of the image acquisition module. Specifically, the directional antenna may be located at any position around the image capturing module, as long as the distance from the image capturing module is ensured to be smaller than the preset distance threshold, for example, the directional antenna may be located above or below the image capturing module, and may also be located on the left side and the right side. The image capturing method provided by the embodiment of the invention is applied to a control module.
The routing antenna may receive a first wireless signal sent by an associated electronic product carried by a user in a scene, and in the embodiment of the present invention, the related wireless signal may be, but is not limited to, an RFID signal, a wifi sniffer signal, and a Zigbee signal. After receiving the first wireless signal, the routing antenna sends the first wireless signal to the control module. The control module may determine an energy of the received first wireless signal. Fig. 3 is a diagram of an energy distribution of wireless signals received by a directional antenna, where when a first wireless signal received by the directional antenna is from the front of the directional antenna (the direction irradiated by an image capturing module), the energy of the first wireless signal is larger, when the first wireless signal received by the directional antenna is from the side of the directional antenna, the energy of the first wireless signal is smaller, and when the first wireless signal received by the directional antenna is from the back of the directional antenna, the energy of the first wireless signal is the smallest.
The control module may store a preset energy value, and after determining the energy of the received first wireless signal, the control module compares the energy of the first wireless signal with the preset energy value. And controlling the actions of the image acquisition module 13 and the pan/tilt head 12 according to the comparison result of the energy of the first wireless signal and the preset energy value.
When the energy of the first wireless signal is greater than the preset energy value, the image acquisition module 13 can be directly controlled to capture the image, when the energy of the first wireless signal is less than the preset energy value, the pan/tilt head 12 can be controlled to rotate for a circle, and the pan/tilt head 12 receives the wireless signal currently sent by the directional antenna 14 once rotates, and the image acquisition module 13 is controlled to capture the image at the position where the wireless signal is the maximum.
In the embodiment of the invention, the control module determines the energy of the received first wireless signal sent by the directional antenna, controls the image acquisition module and the holder to act according to the comparison result of the energy of the first wireless signal and the preset energy value, and controls the image acquisition module and the holder to act according to the comparison result. In the embodiment of the invention, 360-degree snapshot can be realized only by one image acquisition module and one directional antenna according to the received wireless signal energy, so that the intelligent spherical camera provided by the embodiment of the invention has lower cost.
Example 9:
in order to ensure that the captured image contains the target object, on the basis of the above embodiment, in an embodiment of the present invention, the preset energy value includes a preset first threshold;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
and if the energy of the first wireless signal is judged to be larger than a preset first threshold value, controlling the image acquisition module to capture an image.
The preset energy value stored in the control module includes a preset first threshold, where the preset first threshold is a larger value, for example, the preset first threshold is-50 dBm. After the control module determines the energy of the received first wireless signal, if the energy of the first wireless signal is judged to be greater than a preset first threshold value, it can be judged that the approximate position of the target object is located within a certain range in front of the directional antenna, that is, the target object is contained in the current field of view of the image acquisition module, and at this time, the image acquisition module is directly controlled to capture an image. The target object can be ensured to be contained in the captured image.
Example 10:
further, in order to ensure that the captured image includes the target object, on the basis of the above embodiment, in the embodiment of the present invention, the preset energy value further includes a preset second threshold;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
and if the energy of the first wireless signal is judged to be larger than a preset second threshold value and not larger than a preset first threshold value, controlling the cradle head to rotate according to a preset step length, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates, and controlling the image acquisition module to capture an image when the energy of the received second wireless signal is larger than the preset first threshold value.
The preset energy value stored in the control module further includes a preset second threshold, where the preset second threshold is smaller than the preset first threshold, for example, the preset second threshold is-100 dBm. If the control device judges that the energy of the first wireless signal is greater than the preset second threshold and not greater than the preset first threshold, the fact that the approximate position of the target object is located in a certain range at the side or the rear of the directional antenna is shown at this moment, and the cradle head is controlled to rotate according to a preset step length, wherein the preset step length can be 1 degree, 2 degrees and other smaller degrees. In the embodiment of the invention, the wireless signal received by the directional antenna in the rotation process of the holder is used as the second wireless signal. And when the cradle head rotates once, the control module receives a second wireless signal currently sent by the directional antenna and determines the energy of the second wireless signal, and when the energy of the received second wireless signal is greater than a preset first threshold value, the target object is in the current visual field of the image acquisition module, the image acquisition module is controlled to capture the image, and the captured image can be ensured to contain the target object.
Fig. 6 is a schematic diagram of an image capturing process provided in an embodiment of the present invention, where the process includes the following steps:
s201: the control module receives a first wireless signal sent by the directional antenna and determines the energy of the received first wireless signal.
S202: and if the energy of the first wireless signal is judged to be larger than a preset first threshold value, controlling an image acquisition module to shoot an image.
S203: and if the energy of the first wireless signal is judged to be larger than a preset second threshold value and not larger than a preset first threshold value, controlling the cradle head to rotate according to a preset step length, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates, and controlling the image acquisition module to capture an image when the energy of the received second wireless signal is larger than the preset first threshold value.
Example 11:
in order to make a relatively distant target object in a captured image clear, on the basis of the above embodiments, in an embodiment of the present invention, the controlling the actions of the image capturing module and the pan/tilt head according to the comparison result includes:
and if the holder rotates for a circle, the energy of the received second wireless signal is greater than a preset second threshold and not greater than a preset first threshold, the holder is controlled to rotate to the position where the energy of the second wireless signal is maximum, the target magnification of the image acquisition module is determined according to the energy of the second wireless signal at the position and a corresponding relation table of the prestored magnification and the energy, the magnification of the image acquisition module is controlled to be adjusted to the target magnification, and the image is captured.
In the embodiment of the invention, if the pan/tilt head rotates for one circle, the energy of the second wireless signal received by the control module is greater than the preset second threshold and not greater than the preset first threshold, which indicates that the target object is far away from the image acquisition module. And controlling the pan-tilt head to rotate to the position where the energy of the second wireless signal is maximum. For example, the control module controls the pan/tilt head to rotate a circle according to the step length of 1 degree, so that the control module can receive 360 second wireless signals sent by the directional antenna, for example, when the pan/tilt head rotates to 100 degrees, the energy of the received second wireless signals is maximum, and the pan/tilt head is controlled to rotate to 100 degrees. This time illustrates the direction in which the target object is currently illuminated by the image capture module, but is relatively far from the image capture module.
And after the control module controls the holder to rotate to the position with the maximum energy of the second wireless signal, the target magnification of the image acquisition module is determined according to the energy of the second wireless signal received at the current position and the corresponding relationship table of the magnification and the energy, then the magnification of the image acquisition module is controlled to be adjusted to the target magnification, and the image is captured. Therefore, the target object in the captured image can be clear.
It should be noted that the energy and the corresponding relation table of the magnification and the energy are tested and formulated by the user in advance. Specifically, after the intelligent spherical camera is installed in an application scene, a user enables the directional antenna to receive wireless signals with different energies between a preset first threshold and a preset second threshold by adjusting the distance between the test object and the image acquisition module, adjusts the magnification of the image acquisition module according to the wireless signals with each energy to enable the test object in the image acquired by the image acquisition module to be clearest, records the energy and the magnification enabling the test object in the image acquired by the image acquisition module to be clearest, fills a corresponding relation table, and configures the intelligent spherical camera.
In the embodiment of the invention, the control module is further configured to, if the pan/tilt head rotates for one circle, control the pan/tilt head to rotate to a position where the energy of the second wireless signal is maximum, determine the target magnification of the image acquisition module according to the energy of the second wireless signal at the position and the corresponding relationship table of the prestored magnification and energy, control the magnification of the image acquisition module to be adjusted to the target magnification, and capture the image, where the energy of the received second wireless signal is greater than the preset second threshold and not greater than the preset first threshold. Therefore, even if the target object is far away from the image acquisition module, the target object in the image can still be clear after the magnification is adjusted.
Example 12:
on the basis of the foregoing embodiments, in an embodiment of the present invention, if it is determined that the energy of the first wireless signal is not greater than a preset second threshold, the method further includes:
and controlling the image acquisition module not to snapshot images.
In the embodiment of the present invention, if the control module determines that the energy of the first wireless signal is not greater than the preset second threshold, it indicates that the target object is far away from the image capturing module, so that even if the image capturing module captures an image, a user cannot acquire related information of the target object in the image.
In each of the above embodiments, when determining the wireless signal energy, the control module may count an average value of the energy of the received wireless signal within a preset time length for the same position, and use the average value as the wireless signal energy of the current position, where the preset time length may be 5 seconds, 7 seconds, and the like.
Example 13:
on the basis of the foregoing embodiments, in an embodiment of the present invention, the method further includes:
the method comprises the steps of controlling an image acquisition module to acquire a preset number of continuous frame images according to each position meeting the requirements of the pan-tilt rotation on the snapshot of the image acquisition module, sending the continuous frame images to an intelligent analysis module, enabling the intelligent analysis module to determine a target object in each frame image in the continuous frame images received by each position by adopting an intelligent algorithm, determining an evaluation value of the target object, and sending the image with the highest evaluation value of the target object in the continuous frame images to an image reporting module.
The intelligent spherical camera also comprises an intelligent analysis module and an image reporting module. In an embodiment of the present invention, the control module is further configured to control the image capturing module to capture a preset number of continuous frame images for each position where the pan/tilt head rotates and satisfies the capturing of the image capturing module, for example, positions where the pan/tilt head rotates 30 degrees and 32 degrees are both positions where the pan/tilt head satisfies the capturing of the image capturing module, and then at the positions where the pan/tilt head rotates 30 degrees and 32 degrees, the control image capturing module is controlled to capture the preset number of continuous frame images, and the control image capturing module is controlled to send the captured preset number of continuous frame images to the intelligent analysis module.
And the intelligent analysis module determines a target object in each frame image in the continuous frame images received at each position by adopting an intelligent detection algorithm and determines an evaluation value of the target object. Among them, the process of determining a target object in an image and determining an evaluation value of the target object belongs to the related art.
The intelligent analysis module can comprehensively determine the evaluation value of the target object by combining the definition, the brightness value and the like of the target object. The intelligent analysis module determines the evaluation value of the target object, then sends the image with the highest evaluation value of the target object in the continuous frame images to the image reporting module, and the image reporting module sends the received image to the server.
In the embodiment of the invention, the intelligent analysis module determines the image with the highest evaluation value of the target object from the continuous frame images, and then the image reporting module sends the image with the highest evaluation value of the target object to the server. Therefore, the characteristic information of the target object in the image stored in the server can be ensured to be more complete, the target object can be more helped to be tracked by a user, the image with the low evaluation value of the target object is not sent to the server, and the redundancy of the server is also reduced.
Example 14:
on the basis of the foregoing embodiments, in an embodiment of the present invention, after the intelligent analysis module determines, for each position, an image with a highest evaluation value of the target object at the position, the method further includes:
the intelligent analysis module determines the characteristic value of each target object, determines the similarity of any two target objects according to the characteristic value of each target object, takes the target objects with the similarity larger than a preset similarity threshold value as the same target object, and selects the image with the highest evaluation value of the target object to send to the image reporting module aiming at each target object.
The intelligent analysis module can determine the image with the highest evaluation value of the target object according to each position where the pan-tilt rotates and meets the snapshot of the image acquisition module, and sends the image to the image reporting module, for example, the positions where the pan-tilt rotates by 30 degrees and 32 degrees meet the snapshot of the image acquisition module, and then the intelligent analysis module determines the image with the highest evaluation value of the target object respectively at the positions where the pan-tilt rotates by 30 degrees and 32 degrees.
In the embodiment of the present invention, for each position, after determining the image with the highest evaluation value of the target object at the position, the intelligent analysis module may determine the feature value of each target object, and then determine the similarity between any two target objects according to the feature value of each target object. The process of determining the feature values of the target objects and determining the similarity between any two target objects according to the feature values of the target objects belongs to the prior art, and is not described herein again.
The intelligent analysis module can store a preset similarity threshold, judge whether the similarity is greater than the preset similarity threshold aiming at the similarity of any two determined target objects, and if so, take the two target objects as the same target object. And aiming at each target object, selecting the image with the highest evaluation value of the target object and sending the image to an image reporting module.
In the embodiment of the invention, the intelligent analysis module selects the image with the highest evaluation value of the target object to send to the image reporting module aiming at each target object, and then the image reporting module sends the image with the highest evaluation value of the target object to the server, so that the effect of image duplicate removal can be achieved to a certain extent, and the redundancy of the server is further reduced.
Fig. 7 is a schematic diagram of a detailed image capturing process according to an embodiment of the present invention, as shown in fig. 7, a control module first determines whether a first wireless signal is detected, and if so, determines whether energy of the first wireless signal is greater than a preset first threshold, and if so, controls an image acquisition module to capture an image and send the image to an intelligent analysis module, where the intelligent analysis module processes the image and reports the image at regular time through an image reporting module. If not, judging whether the energy of the first wireless signal is larger than a preset second threshold value, if so, controlling the cradle head to rotate, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates once, judging whether the energy of the received second wireless signal is larger than the preset first threshold value, if so, controlling the image acquisition module to capture the image, otherwise, controlling the cradle head to rotate to the position with the maximum energy of the second wireless signal, determining the target magnification of the image acquisition module according to the energy of the second wireless signal at the position and a prestored corresponding relation table of the magnification and the energy, and controlling the magnification of the image acquisition module to be adjusted to the target magnification and capturing the image.
The embodiment of the invention provides an intelligent spherical camera and an image capturing method, wherein the intelligent spherical camera comprises a control module and a holder, and the intelligent spherical camera further comprises: the device comprises an image acquisition module and a directional antenna, wherein the distance between the image acquisition module and the directional antenna is smaller than a preset distance threshold; the control module is respectively connected with the holder, the image acquisition module and the directional antenna; the directional antenna is used for receiving a first wireless signal and sending the received first wireless signal to the control module; the control module is used for determining the energy of the received first wireless signal, and controlling the image acquisition module to capture an image if the energy of the first wireless signal is judged to be greater than a preset first threshold value; and if the energy of the first wireless signal is judged to be larger than a preset second threshold value and not larger than a preset first threshold value, controlling the cradle head to rotate according to a preset step length, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates, and controlling the image acquisition module to capture an image when the energy of the received second wireless signal is larger than the preset first threshold value.
In the embodiment of the invention, the control module determines the energy of the received first wireless signal sent by the directional antenna, and if the energy of the first wireless signal is judged to be greater than a preset first threshold value, the control module controls the image acquisition module to capture an image; and if the energy of the first wireless signal is judged to be larger than the preset second threshold and not larger than the preset first threshold, controlling the cradle head to rotate according to the preset step length, receiving the second wireless signal currently sent by the directional antenna every time the cradle head rotates once, and controlling the image acquisition module to capture the image when the energy of the received second wireless signal is larger than the preset first threshold. In the embodiment of the invention, 360-degree snapshot can be realized only by one image acquisition module and one directional antenna according to the received wireless signal energy, so that the intelligent spherical camera provided by the embodiment of the invention has lower cost.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides an intelligence ball camera, intelligence ball camera includes control module, cloud platform, its characterized in that, intelligence ball camera still includes: the device comprises an image acquisition module and a directional antenna, wherein the distance between the image acquisition module and the directional antenna is smaller than a preset distance threshold;
the control module is respectively connected with the holder, the image acquisition module and the directional antenna;
the directional antenna is used for receiving a first wireless signal and sending the received first wireless signal to the control module;
the control module is used for determining the energy of the received first wireless signal, determining the comparison result of the energy of the first wireless signal and a preset energy value, and controlling the actions of the image acquisition module and the holder according to the comparison result;
the control module is specifically configured to control the image acquisition module to capture an image if the energy of the first wireless signal is judged to be greater than the preset first threshold;
the preset energy value further comprises a preset second threshold value, and the control module is specifically used for controlling the cradle head to rotate according to a preset step length if the energy of the first wireless signal is judged to be larger than the preset second threshold value and not larger than the preset first threshold value, receiving the second wireless signal currently sent by the directional antenna when the cradle head rotates once, and controlling the image acquisition module to capture the image when the energy of the received second wireless signal is larger than the preset first threshold value.
2. The intelligent dome camera according to claim 1, wherein the control module is further configured to, if the pan/tilt head rotates a circle, control the pan/tilt head to rotate to a position where the energy of the second wireless signal is maximum, determine a target magnification of the image capturing module according to the energy of the second wireless signal at the position and a pre-stored correspondence table between the magnification and the energy, control the magnification of the image capturing module to adjust to the target magnification, and capture an image, where the energy of the received second wireless signal is greater than a preset second threshold and not greater than a preset first threshold.
3. The smart dome camera of claim 1, wherein the control module is specifically configured to control the image capturing module not to capture the image if it is determined that the energy of the first wireless signal is not greater than a preset second threshold.
4. The intelligent dome camera of any one of claims 1-2, wherein the intelligent dome camera further comprises: the intelligent analysis module and the image reporting module;
the intelligent analysis module is connected with the image reporting module;
the control module is also used for controlling the image acquisition module to acquire a preset number of continuous frame images aiming at each position meeting the requirements of the pan-tilt rotation for the snapshot of the image acquisition module and sending the continuous frame images to the intelligent analysis module;
the intelligent analysis module is used for determining a target object in each frame image in the continuous frame images received at each position by adopting an intelligent algorithm, determining an evaluation value of the target object, and sending the image with the highest evaluation value of the target object in the continuous frame images to the image reporting module;
and the image reporting module is used for sending the received image to a server.
5. The intelligent dome camera according to claim 4, wherein the intelligent analysis module is further configured to determine a feature value of each target object after determining an image with the highest evaluation value of the target object at each position, determine a similarity between any two target objects according to the feature value of each target object, regard the target objects with the similarity larger than a preset similarity threshold as the same target object, and select the image with the highest evaluation value of the target object for each target object and send the image to the image reporting module.
6. A method of image capture, the method comprising:
the control module receives a first wireless signal sent by the directional antenna and determines the energy of the received first wireless signal;
determining a comparison result of the energy of the first wireless signal and a preset energy value, and controlling the actions of the image acquisition module and the holder according to the comparison result;
the preset energy value comprises a preset first threshold value;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
if the energy of the first wireless signal is judged to be larger than a preset first threshold value, controlling the image acquisition module to capture an image;
the preset energy value also comprises a preset second threshold value;
the action of controlling the image acquisition module and the holder according to the comparison result comprises the following steps:
and if the energy of the first wireless signal is judged to be larger than a preset second threshold value and not larger than a preset first threshold value, controlling the cradle head to rotate according to a preset step length, receiving a second wireless signal currently sent by the directional antenna every time the cradle head rotates, and controlling the image acquisition module to capture an image when the energy of the received second wireless signal is larger than the preset first threshold value.
7. The method of claim 6, wherein the act of controlling the image capture module and the pan-tilt head according to the comparison comprises:
and if the holder rotates for a circle, the energy of the received second wireless signal is greater than a preset second threshold and not greater than a preset first threshold, the holder is controlled to rotate to the position where the energy of the second wireless signal is maximum, the target magnification of the image acquisition module is determined according to the energy of the second wireless signal at the position and a corresponding relation table of the prestored magnification and the energy, the magnification of the image acquisition module is controlled to be adjusted to the target magnification, and the image is captured.
8. The method of claim 6, wherein the act of controlling the image capture module and the pan-tilt head according to the comparison comprises:
and if the energy of the first wireless signal is judged to be not greater than a preset second threshold value, controlling the image acquisition module not to snapshot an image.
9. The method of any one of claims 6-7, further comprising:
the method comprises the steps of controlling an image acquisition module to acquire a preset number of continuous frame images according to each position meeting the requirements of the pan-tilt rotation on the snapshot of the image acquisition module, sending the continuous frame images to an intelligent analysis module, enabling the intelligent analysis module to determine a target object in each frame image in the continuous frame images received by each position by adopting an intelligent algorithm, determining an evaluation value of the target object, and sending the image with the highest evaluation value of the target object in the continuous frame images to an image reporting module.
10. The method of claim 9, wherein after having the intelligent analysis module determine, for each location, the image with the highest evaluation value of the target object at that location, the method further comprises:
the intelligent analysis module determines the characteristic value of each target object, determines the similarity of any two target objects according to the characteristic value of each target object, takes the target objects with the similarity larger than a preset similarity threshold value as the same target object, and selects the image with the highest evaluation value of the target object to send to the image reporting module aiming at each target object.
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