CN102883099B - Anti-shake method and device for shooting - Google Patents

Abstract

The invention discloses a shooting anti-shake method and device, comprising: acquiring an image collected by a second camera whose lens direction is opposite to that of the first camera at the moment when the first camera captures an image; and according to the acquired image, determining A first position change parameter required for electronic anti-shake processing; and based on the determined first position change parameter, electronic anti-shake processing is performed on the image captured by the first camera at the shooting moment. By adopting the solution provided by the embodiment of the present invention, when the shooting environment of the first camera is worse than the shooting environment of the second camera, better anti-shake effect can be obtained, that is, the clarity of the captured image can be improved. .

Description

Method and device for image stabilization

technical field

The present invention relates to the technical field of image capture and processing, in particular to a method and device for image stabilization.

Background technique

In the existing shooting technology, when shooting with a shooting device, the photosensitive device will be used to detect light within the shooting time corresponding to one shooting, and all the images obtained by the light sensing during the shooting time will be superimposed into one image. However, since the user may shake the shooting device during the shooting process, there will be slight position changes between the photosensitized images at different times within a shooting time, including displacement changes and angle changes, so there will be changes in the position Multiple images are superimposed together to obtain blurred and ghosted images, which in turn leads to the problem of unclear captured images.

In order to solve this technical problem, it is proposed in the prior art to use electronic anti-shake technology to perform anti-shake processing on the images collected during shooting, so that when the user uses the shooting device to shake during the shooting process, he can still take a clear picture. image. At present, the existing electronic anti-shake technical solutions are as follows:

Compare and analyze the multiple images collected during one shooting, and determine the two-axis translation displacement angle between the images by comparing the clear multi-region/sharp object edges of each image (the lens caused by the tiny vibration in the vibration Since the forward and backward movement is relatively slight, and the slight forward and backward movement has little effect on the final image, the electronic image stabilization often does not consider the movement in the front and rear directions) and the three-axis rotation angle. Specifically, one image can be specified among the multiple images. For example, take the first image as the specified image, then determine the position change parameters of each of the remaining images relative to the specified image in the plurality of images, and determine the average value of the obtained position change parameters, and then calculate the value of each remaining position according to the average value. The corrected images are corrected to obtain the corrected image, and finally the specified image is superimposed with each corrected image to synthesize a relatively clear image. For video shooting, electronic anti-shake processing is performed according to the same principle, the difference is that multiple images required for synthesizing one frame of image are collected according to the frame rate.

However, in the above-mentioned electronic anti-shake solution, when determining the position changes among the multiple images collected, if the current shooting environment of the camera is poor, the resolution of the collected images may be low, resulting in the The determined position changes between the images are not accurate enough, so that a better anti-shake effect cannot be obtained when subsequent electronic anti-shake processing is performed according to the determined position changes.

Contents of the invention

Embodiments of the present invention provide a shooting anti-shake method and device, which are used to improve the anti-shake effect of anti-shake processing, thereby improving the clarity of captured images.

An embodiment of the present invention provides a shooting anti-shake method, including:

Obtaining an image captured by a second camera whose lens direction is opposite to that of the first camera at the moment when the first camera captures the image;

determining a first position change parameter required for electronic anti-shake processing according to the acquired image;

Based on the determined first position change parameter, electronic anti-shake processing is performed on the image captured by the first camera at the shooting moment.

An embodiment of the present invention also provides a shooting anti-shake device, including:

An acquisition unit, configured to acquire an image captured by a second camera whose lens direction is opposite to that of the first camera at the moment when the first camera captures the image;

A parameter determination unit, configured to determine the first position change parameter required for electronic anti-shake processing according to the acquired image;

A processing unit, configured to perform electronic anti-shake processing on the image captured by the first camera at the shooting moment based on the determined first position change parameter.

The beneficial effects of the present invention include:

In the method provided by the embodiment of the present invention, the camera currently used for shooting is the first camera, but when performing anti-shake processing on the image collected by the first camera at the time of shooting, it is based on the fact that the lens direction is opposite to that of the first camera The first position change parameter determined by the image captured by the second camera at the shooting moment is carried out. Therefore, when the shooting environment of the first camera is worse than the shooting environment of the second camera, due to the The first position change parameter determined by the image collected by the second camera is more accurate than the position change parameter determined by the image collected by the first camera, so based on the first position change parameter, the image collected by the first camera at the shooting moment By performing electronic anti-shake processing, a better anti-shake effect can be obtained, so that in this shooting environment, a clearer captured image can be obtained compared with the prior art.

Description of drawings

FIG. 1 is a flow chart of a shooting anti-shake method provided by an embodiment of the present invention;

FIG. 2 is a flow chart of the shooting anti-shake method provided in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the translational displacement angle caused by the translational movement of the shooting device in Embodiment 1 of the present invention;

4 is a schematic diagram of the rotation angle generated by the rotation of the shooting device in Embodiment 1 of the present invention;

FIG. 5 is a flow chart of the shooting anti-shake method provided in Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of a shooting anti-shake device provided in Embodiment 3 of the present invention.

Detailed ways

In order to provide an implementation plan for improving the anti-shake effect of anti-shake processing, thereby improving the clarity of captured images, the embodiment of the present invention provides a method and device for shooting anti-shake. The following describes preferred embodiments of the present invention in conjunction with the accompanying drawings For illustration, it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, not to limit the present invention. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

An embodiment of the present invention provides a shooting anti-shake method, as shown in FIG. 1 , including:

Step S101 , acquiring an image captured by a second camera whose lens direction is opposite to that of the first camera at the time when the first camera captures the image.

Step S102 , according to the acquired image, determine a first position change parameter required for electronic anti-shake processing.

Step S103 , based on the determined first position change parameter, perform electronic anti-shake processing on the image captured by the first camera at the shooting moment.

In the above shooting anti-shake method, the first camera and the second camera are two cameras belonging to the same shooting device, and the lens directions of the two cameras are opposite, that is, the difference is 180 degrees, which is commonly referred to as the front camera and the camera. For the rear-facing camera, in the embodiment of the present application, for the convenience of description and understanding of the solution, the camera currently in charge of shooting among the two cameras is called the first camera, and the other camera is called the second camera.

In the embodiment of the present invention, when the shooting environment of the second camera is better than the shooting environment of the first camera, for example, the second camera is in a forward light environment, and the first camera is in a backlight environment, then the second camera The clarity of the captured image will be greater than that of the image captured by the first camera, so the position change parameter required for electronic anti-shake processing is determined according to the image captured by the second camera (for the sake of distinction, the position will be changed later The parameter is called the first position change parameter), and the position change parameter required for electronic anti-shake processing determined according to the image collected by the first camera (for the convenience of distinction, the position change parameter is subsequently called the second position change parameter ) will be more accurate, so in this shooting environment, the anti-shake effect obtained by performing electronic anti-shake processing on the image collected by the first camera at the shooting moment based on the first position change parameter will be better than that based on the first position change parameter The anti-shake effect obtained by performing electronic anti-shake processing on the image collected by the first camera at the shooting moment of the second position change parameter, that is, the image captured after the anti-shake processing has a higher degree of clarity.

The method and device provided by the present invention will be described in detail below with specific embodiments in conjunction with the accompanying drawings.

Example 1:

FIG. 2 is a flow chart of the shooting anti-shake method provided in Embodiment 1 of the present invention, which specifically includes the following processing steps:

Step S201. After the first camera used for the current shooting is turned on, the first camera will collect images in real time and cache them. The shooting device to which the first camera belongs acquires the images captured by the first camera, specifically, it may periodically acquire the latest images currently captured, and the acquisition period may be determined according to the attributes, use experience and actual needs of the cameras.

Step S202 , judging whether the resolution of the image captured by the first camera is less than the set resolution threshold, if yes, proceed to step S203 , otherwise, proceed to step S207 .

Due to the influence of light in the shooting environment where the current shooting device is located, the clarity of the image captured by the camera will change. For example, when the light intensity is relatively weak, or the first camera is in a backlit environment, the image captured by the first camera will The sharpness of the image is low; if the light intensity is relatively strong, or the first camera is in a bright environment, the sharpness of the captured image is high.

Step S203, turn on the second camera, and the second camera collects images in real time and caches them. The photographing device acquires the images captured by the second camera, specifically, the latest images currently captured may be periodically acquired, and the acquisition period may be determined according to the attributes of the camera, experience in use and actual needs.

Step S204 , judging whether the sharpness of the image captured by the second camera is smaller than the set sharpness threshold, if not, go to step S205 , otherwise, go to step S207 .

At this time, if the resolution of the image captured by the first camera is low due to weak light intensity, which is lower than the set resolution threshold, the resolution of the image captured by the second camera may also be relatively low, that is, it is also lower than the set threshold. Sharpness threshold, and if the sharpness of the image captured by the first camera is low because the first camera is in a backlit environment, the second camera must be In a bright environment, the definition of the image captured by the second camera may be higher, that is, greater than the set definition threshold.

Step S205. When the first camera is shooting an image, according to the image collected by the second camera at the moment when the first camera shoots the image, determine the first position change parameter required for electronic anti-shake processing. In this step, the first position change parameter is determined. The image on which the position change parameter is based is the image collected during the shooting process of the first camera, and the time of collecting the image is the same as the time of collecting the image during the shooting process of the first camera.

The specific determination method of the position change parameter can adopt the scheme in the existing electronic anti-shake technology, which will not be described in detail here, but in order to facilitate the understanding of the scheme, the principle of the electronic anti-shake technology is described as follows:

Due to the visual imaging principle of near-large and far-small and the imaging principle of the convex lens, when the shooting equipment is shifted during the shooting process, the closer the object to the lens, the greater the displacement in the actual image, and the farther the object is in the actual image. The smaller the displacement is, the displacement is 0 for an object at infinity. Therefore, the actual depth of field of the image can be regarded as a cube, as shown in Figure 3, because the translation makes the depth of field directions of the two images form an angle α, and this angle is called the translation displacement angle. When the shooting device rotates during the shooting process, as shown in FIG. 4 , an angle β will be generated correspondingly, and this angle is called a rotation angle. In the electronic anti-shake technology, the translational displacement angle and the rotational angle are both position change parameters. The translational displacement angle can specifically include the translational displacement angle α _X along the X-axis and the translational displacement angle α _Y along the Y-axis. Since the shooting device is along the Z-axis The translation of has little effect on image clarity, so the translation displacement angle along the Z axis can be ignored, and the rotation angle can specifically include the rotation angle β _X with the X axis as the axis, the rotation angle β _Y with the Y axis as the axis, and Rotation angle β _Z around the Z axis.

Electronic anti-shake is to use the first image collected within the shooting time of one shooting as the standard, and use the image comparison algorithm to compare the remaining images collected within the shooting time with the first image to determine the remaining images. The translational displacement angle and rotation angle between the secondary image and the first image, and then calculate the average value of each translational displacement angle and the average value of each rotation angle, and then based on the average translational displacement angle and the average value of rotation angle, use the image The correction algorithm calculates the translational displacement angle difference between the translational displacement angles of the other sub-images relative to the first image and the average translational displacement angle, and uses the translational displacement angle difference as the translational displacement angle adjustment value Δα, and calculates Get the rotation angle difference between the rotation angle and the average value of the rotation angle between the remaining sub-images relative to the first image, and use the rotation angle difference as the rotation angle adjustment value Δβ, and then use each translation displacement angle adjustment value and each The rotation angle adjustment value corresponds to correcting the remaining sub-images respectively, and then superimposing the first image and the corrected sub-images to obtain the final captured image.

Based on the principle of the above-mentioned electronic anti-shake technology, the first position change parameter determined in this step may specifically include: corresponding to the second camera, the edge corresponding to the i-th image among the images collected within one shooting duration The translational displacement angle adjustment value of the X axis Δα _{X, 2, i} , the translational displacement angle adjustment value Δα _{Y, 2, i} along the Y axis, the rotation angle adjustment value Δβ _{X, 2, i} of the X axis, and the Y axis The rotation angle adjustment value Δβ _{Y, 2, i} with the axis as the axis and the rotation angle adjustment value Δβ _{Z, 2, i} with the Z axis as the axis, where the value of i is an integer within 1-N, and N is a shooting The number of images collected during the duration.

Step S206, based on the determined first position change parameter, perform electronic anti-shake processing on the image collected by the first camera at the shooting moment, which may specifically include:

First of all, since the lens directions of the first camera and the second camera differ by 180 degrees, and the two cameras are relatively stationary at any moment, there is no relative displacement and relative angle change between the two, so when the shooting device shakes When , the absolute displacement and rotation of the object and photosensitive device in the first camera is equal to the absolute displacement and rotation of the object and photosensitive device in the second camera, so compared with the images captured synchronously in the two cameras, the translation corresponding to the images collected by each There is a definite corresponding relationship between the displacement angle and the rotation displacement angle. Therefore, based on the first position change parameter, the second position change parameter required by the first camera for electronic anti-shake processing can be determined.

Corresponding to the specific parameters included in the above-mentioned first position change parameter, the second position change parameter may specifically include: corresponding to the first camera, the edge corresponding to the i-th sub-image among the sub-images collected within one shooting duration The adjustment value of the translational displacement angle of the X axis Δα _{X, 1, i} , the adjustment value of the translational displacement angle along the Y axis Δα _{Y, 1, i} , the adjustment value of the rotation angle of the X axis Δβ _{X, 1, i} , and Y The rotation angle adjustment value Δβ _{Y, 1, i} with the axis as the axis and the rotation angle adjustment value Δβ _{Z, 1, i} with the Z axis as the axis, where the value of i is an integer within 1-N, and N is a shooting The number of images collected during the duration;

Then, electronic anti-shake processing is performed on the image captured by the first camera at the shooting moment according to the second position change parameter. The specific anti-shake processing scheme can adopt the existing technology, and will not be described in detail here.

Wherein, when determining the second position change parameter based on the first position change parameter, it may be based on whether the focal lengths of the first camera and the second camera are the same, specifically, the following two methods may be included:

The first way: when the focal length of the first camera is the same as that of the second camera, the determined first position change parameter is used as the second position change parameter required when the first camera performs electronic anti-shake processing.

The second method: when the focal length of the first camera is different from that of the second camera, if the determined first position change parameter is directly used as the second position change parameter required for the electronic anti-shake processing of the first camera, because The difference in the focal lengths of the two cameras may make the final anti-shake processing effect unsatisfactory. Therefore, in this method, firstly, based on the determined first position change parameter, according to the equivalent focal length of the second camera relative to the designated camera and the first The ratio of the equivalent focal length of the camera relative to the specified camera determines the second position change parameter required by the first camera for electronic anti-shake processing. For the adjustment value of the translational displacement angle in the positional change parameter, due to the translational displacement angle of the two axes The ratio is equal to the ratio of the equivalent focal length of the two cameras relative to the specified camera, so it can be determined by the following formula:

Δα _X,1,i /Δα _X,2,i = f ₁ /f ₂ ;

Δα _Y,1,i /Δα _Y,1,i = f ₁ /f ₂ ;

Wherein, f1 is the equivalent focal length of the _first camera relative to the specified camera, and f2 is the equivalent focal length of the _second camera relative to the specified camera;

For the adjustment value of the rotation angle in the position change parameter, since the rotation angle value of the three axes is exactly the same as the rotation direction, the adjustment value of the rotation angle in the first position change parameter can be directly used as the rotation angle in the second position change parameter Adjust the values as follows:

ΔβX _{, 1, i} = ΔβX _{, 2, i} ;

ΔβY _,1,i =ΔβY _,2,i ;

Δβ _Z,1,i = Δβ _Z,2,i .

Step S207, according to the image collected by the first camera at the time of shooting, determine the second position change parameter required for electronic anti-shake processing, the image on which the second position change parameter is determined in this step is taken by the first camera images collected during the process.

Step S208: Perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the second position change parameter. The specific anti-shake processing scheme can adopt the existing technology, and will not be described in detail here.

In steps S207 and S208 in the method flow shown in FIG. 2 above, the second position change parameter required for electronic anti-shake processing is determined based on the image collected by the first camera at the shooting moment, and only based on the second position The change parameter performs electronic anti-shake processing on the image collected by the first camera at the shooting moment. In other embodiments, after the second position change parameter is determined, based on the second position change parameter and the first determined in step S205 above, The position change parameter is used to perform electronic anti-shake processing on the image collected by the first camera at the shooting moment, as follows:

That is, step S208 may specifically be: determine the average position change parameter of the second position change parameter and the first position change parameter, and perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the average position change parameter.

Using the shooting anti-shake method provided by the above-mentioned embodiment 1 of the present invention, when the resolution of the image collected by the first camera responsible for shooting is low, for example, less than the set resolution threshold, and the direction of the lens is the same as the lens of the first camera When the resolution of the image captured by the second camera in the opposite direction is higher, for example, greater than the set resolution threshold, that is, when the resolution of the image captured by the second camera is greater than that of the image captured by the first camera, according to the second The first position change parameter required for electronic anti-shake processing determined by the image collected by the camera will be more accurate than the second position change parameter required for electronic anti-shake processing determined based on the image collected by the first camera. Accurate, therefore, at this time, the anti-shake effect obtained by performing electronic anti-shake processing on the image captured by the first camera based on the first position change parameter will be better than the image collected by the first camera at the shooting time based on the second position change parameter The anti-shake effect obtained by electronic anti-shake processing, that is, the image captured after the anti-shake processing has a higher degree of clarity.

However, when the resolution of the image captured by the first camera is not less than the set resolution threshold, the second position change parameter required for electronic anti-shake processing determined according to the image captured by the first camera can already meet the requirements based on the second position. It is necessary to change the parameters for electronic anti-shake processing and obtain better anti-shake effects. Therefore, in order to save the use of the second camera and the corresponding processing resources, the parameters can be changed only according to the second position, and the first camera can be adjusted at the time of shooting. The collected images are electronically stabilized.

Example 2:

FIG. 5 is a flow chart of the shooting anti-shake method provided in Embodiment 2 of the present invention, which specifically includes the following processing steps:

Step S501, after the first camera used for the current shooting is turned on, the first camera will collect images in real time and cache them. The shooting device to which the first camera belongs acquires the images captured by the first camera, specifically, it may periodically acquire the latest images currently captured, and the acquisition period may be determined according to the attributes, use experience and actual needs of the cameras.

Step S502 , when the first camera used for the current shooting is turned on, the second camera is turned on at the same time, and the second camera collects images in real time and caches them. The shooting device then acquires the image captured by the second camera, specifically, it may periodically acquire the latest image currently captured, and the acquisition period may be determined according to the attributes of the camera, experience in use, and actual needs, for example, the same as the acquisition of the second camera in step S501. The periods of images collected by a camera are the same.

Step S503 , judging whether the resolution of the image captured by the second camera is greater than that of the image captured by the first camera, if yes, proceed to step S504 , otherwise, proceed to step S506 .

Due to the influence of the light in the shooting environment where the current shooting equipment is located, the clarity of the image captured by the camera will change. Low; if the light intensity is relatively strong, or the camera is in a bright environment, the definition of the captured image is higher.

Step S504: When the first camera is shooting an image, according to the image collected by the second camera at the moment when the first camera shoots the image, determine the first position change parameter required for electronic anti-shake processing. In this step, the first position change parameter is determined. The image on which the position change parameter is based is the image collected during the shooting process of the first camera, and the time of collecting the image is the same as the time of collecting the image during the shooting process of the first camera.

For the specific determination method and specific characteristic value of the position change parameter, reference may be made to the above-mentioned step S205, which will not be described in detail here.

Step S505 , based on the determined first position change parameter, perform electronic anti-shake processing on the image captured by the first camera at the shooting moment.

For a specific solution, reference may be made to the above-mentioned step S206, which will not be described in detail here.

Step S506, according to the image collected by the first camera at the time of shooting, determine the second position change parameter required for electronic anti-shake processing, the image on which the second position change parameter is determined in this step is taken by the first camera images collected during the process.

Step S507: Perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the second position change parameter. The specific anti-shake processing scheme can adopt the existing technology, and will not be described in detail here.

Using the shooting anti-shake method provided by the above-mentioned embodiment 2 of the present invention, the definition of the image collected by the first camera responsible for shooting is compared with the definition of the image collected by the second camera. The position change parameters required for anti-shake processing will be more accurate than the position change parameters required for electronic anti-shake processing determined based on images with low resolution. The position change parameter required for electronic anti-shake processing. Correspondingly, based on the position change parameter, electronic anti-shake processing is performed on the image collected by the first camera at the shooting moment, and a more anti-shake effect will be obtained, that is, the image that has undergone anti-shake processing The clarity of the captured image is higher.

In the method of the above-mentioned embodiment 1 and embodiment 2 of the present invention, it is all based on the definition of the image collected by the first camera and the definition of the image collected by the second camera, determine which camera to collect the image according to determine the position change parameter, And based on the determined position change parameter, electronic anti-shake processing is performed on the image collected by the first camera at the shooting moment. In other embodiments, it is also possible to determine the second position change parameter according to the image collected by the first camera at the shooting moment, and based on the determined second position change parameter, perform electronic anti-shake processing on the image collected by the first camera at the shooting moment , to obtain the shot image, and at the same time determine the first position change parameter according to the image collected by the second camera at the shooting moment, and based on the determined first position change parameter, perform electronic anti-shake processing on the image collected by the first camera at the shooting moment, The captured image is also obtained, so that when the shooting environment of the first camera is worse than that of the second camera, a clear captured image can be obtained, and there is no need to compare the clarity of the images collected by the two cameras in advance; Further, it is also possible to compare the clarity of the obtained two captured images, and select the clearer captured image as the final captured image, and the processing flow of the detailed solution will not be described in detail here.

Example 3:

Based on the same inventive concept, according to the anti-shake method provided by the above-mentioned embodiments of the present invention, correspondingly, Embodiment 3 of the present invention also provides an anti-shake device for shooting, which can be installed on In the shooting device of the two cameras, its structural schematic diagram is shown in Figure 6, specifically including:

An acquisition unit 601, configured to acquire an image captured by a second camera whose lens direction is opposite to that of the first camera at the time when the first camera captures the image;

A parameter determining unit 602, configured to determine a first position change parameter required for electronic anti-shake processing according to the acquired image;

The processing unit 603 is configured to perform electronic anti-shake processing on the image captured by the first camera at the shooting moment based on the determined first position change parameter.

Preferably, the acquiring unit 601 is further configured to acquire the image captured by the first camera before acquiring the image captured by the second camera at the shooting moment;

It also includes: a sharpness determining unit 604, configured to determine that the sharpness of the image captured by the first camera is less than a set sharpness threshold before the acquiring unit 601 acquires the image captured by the second camera at the shooting moment; and before the processing unit 603 performs electronic anti-shake processing on the image captured by the first camera at the shooting moment based on the determined first position change parameter, determine that the resolution of the image captured by the second camera is not Less than the set sharpness threshold.

Preferably, the sharpness determining unit 604 is further configured to determine that the sharpness of the image captured by the first camera is not less than a set sharpness threshold, or determine that the sharpness of the image captured by the second camera is less than Set the sharpness threshold;

The parameter determination unit 602 is further configured to determine that the resolution of the image captured by the first camera is not less than the set resolution threshold, or determine the resolution of the image captured by the second camera when the resolution determination unit 604 determines When the sharpness is less than the set sharpness threshold, according to the image collected by the first camera at the shooting moment, determine the second position change parameter required for electronic anti-shake processing;

The processing unit 603 is further configured to perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the second position change parameter.

Preferably, the sharpness determination unit 604 is further configured to determine that the sharpness of the image captured by the second camera is less than a set sharpness threshold;

The parameter determining unit 602 is further configured to, before the processing unit 603 performs electronic anti-shake processing on the image collected by the first camera at the shooting moment based on the determined first position change parameter, according to the determined The image collected by the first camera at the shooting moment determines the second position change parameter required for electronic anti-shake processing;

The processing unit 603 is specifically configured to determine an average position change parameter of the first position change parameter and the second position change parameter; The collected images are electronically stabilized.

Preferably, it further includes: a sharpness determination unit 604, configured to determine the second camera's resolution before the parameter determination unit 602 determines the first position change parameter required for electronic anti-shake processing according to the acquired image. The definition of the collected image is greater than the definition of the image collected by the first camera.

Preferably, the processing unit 603 is specifically configured to: when the focal length of the first camera is the same as that of the second camera, according to the determined first position change parameter, Electronic anti-shake processing is performed on the image collected at the shooting moment; or

When the focal length of the first camera is different from the focal length of the second camera, based on the determined first position change parameter, according to the equivalent focal length of the second camera relative to the specified camera relative to the first camera The proportion of the equivalent focal length of the specified camera determines the second position change parameter required for the first camera to perform electronic anti-shake processing, and adjusts the position of the first camera according to the second position change parameter. The images collected at the time of shooting are electronically stabilized.

To sum up, the solution provided by the embodiment of the present invention includes: acquiring an image captured by a second camera whose lens direction is opposite to that of the first camera at the time when the first camera captures an image; and determining A first position change parameter required for electronic anti-shake processing; and based on the determined first position change parameter, electronic anti-shake processing is performed on the image captured by the first camera at the shooting moment. By adopting the solution provided by the embodiment of the present invention, when the shooting environment of the first camera is worse than the shooting environment of the second camera, better anti-shake effect can be obtained, that is, the clarity of the captured image can be improved. .

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. A shooting anti-shake method, characterized in that, comprising: Obtaining an image captured by a second camera whose lens direction is opposite to that of the first camera at the moment when the first camera captures the image; determining a first position change parameter required for electronic anti-shake processing according to the acquired image; Based on the determined first position change parameter, perform electronic anti-shake processing on the image collected by the first camera at the shooting moment; Wherein, before obtaining the image collected by the second camera at the shooting moment, it also includes: Obtain an image captured by the first camera; determining that the sharpness of the image captured by the first camera is less than a set sharpness threshold; Before performing electronic anti-shake processing on the image collected by the first camera at the shooting moment based on the determined first position change parameter, the method further includes: It is determined that the sharpness of the image captured by the second camera is not less than the set sharpness threshold. 2. The method according to claim 1, wherein when it is determined that the sharpness of the image captured by the first camera is not less than the set sharpness threshold, or when it is determined that the sharpness of the image captured by the second camera is When the sharpness is less than the set sharpness threshold, it also includes: determining a second position change parameter required for electronic anti-shake processing according to the image collected by the first camera at the shooting moment; Perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the second position change parameter. 3. The method according to claim 1, wherein when it is determined that the sharpness of the image captured by the second camera is less than the set sharpness threshold, based on the determined first position change parameter, the Before the image collected by the first camera at the shooting moment is subjected to electronic anti-shake processing, it also includes: determining a second position change parameter required for electronic anti-shake processing according to the image collected by the first camera at the shooting moment; Based on the determined first position change parameter, performing electronic anti-shake processing on the image collected by the first camera at the shooting moment, specifically including: determining an average position change parameter of the first position change parameter and the second position change parameter; Perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the average position change parameter. 4. The method according to claim 1, further comprising: before determining the first position change parameter required for electronic anti-shake processing according to the acquired image: It is determined that the definition of the image collected by the second camera is greater than the definition of the image collected by the first camera. 5. The method according to claim 1, wherein, based on the determined first position change parameter, electronic anti-shake processing is performed on the image collected by the first camera at the shooting moment, specifically comprising: When the focal length of the first camera is the same as that of the second camera, according to the determined first position change parameter, electronic anti-shake processing is performed on the image collected by the first camera at the shooting moment; or When the focal length of the first camera is different from the focal length of the second camera, based on the determined first position change parameter, according to the equivalent focal length of the second camera relative to the specified camera relative to the first camera The proportion of the equivalent focal length of the specified camera determines the second position change parameter required for electronic anti-shake processing, and according to the second position change parameter, the image collected by the first camera at the shooting moment Perform electronic anti-shake processing. 6. A shooting anti-shake device, characterized in that it comprises: An acquisition unit, configured to acquire an image captured by a second camera whose lens direction is opposite to that of the first camera at the shooting moment of the image captured by the first camera; Before acquiring the image, acquire the image acquired by the first camera; A parameter determination unit, configured to determine the first position change parameter required for electronic anti-shake processing according to the acquired image; A processing unit, configured to perform electronic anti-shake processing on the image collected by the first camera at the shooting moment based on the determined first position change parameter; A sharpness determination unit, configured to determine that the sharpness of the image captured by the first camera is less than a set sharpness threshold before the acquisition unit acquires the image captured by the second camera at the shooting moment; and during the processing Based on the determined first position change parameter, before performing electronic anti-shake processing on the image captured by the first camera at the shooting moment, the unit determines that the clarity of the image captured by the second camera is not less than the set clarity degree threshold. 7. The device according to claim 6, wherein the sharpness determining unit is further configured to determine that the sharpness of the image captured by the first camera is not less than a set sharpness threshold, or determine that the The sharpness of the image collected by the second camera is less than the set sharpness threshold; The parameter determination unit is further configured to determine that the resolution of the image captured by the first camera is not less than a set resolution threshold, or determine that the resolution of the image captured by the second camera is less than When setting the sharpness threshold, according to the image collected by the first camera at the shooting moment, determine the second position change parameter required for electronic anti-shake processing; The processing unit is further configured to perform electronic anti-shake processing on the image captured by the first camera at the shooting moment according to the second position change parameter. 8. The device according to claim 6, wherein the sharpness determination unit is further configured to determine that the sharpness of the image captured by the second camera is less than a set sharpness threshold; The parameter determining unit is further configured to, before the processing unit performs electronic anti-shake processing on the image captured by the first camera at the shooting moment based on the determined first position change parameter, according to the first An image collected by a camera at the shooting moment, to determine the second position change parameter required for electronic anti-shake processing; The processing unit is specifically configured to determine an average position change parameter of the first position change parameter and the second position change parameter; and collect data collected by the first camera at the shooting moment according to the average position change parameter The image is electronically stabilized. 9. The apparatus of claim 6, further comprising: A sharpness determination unit, configured to determine that the sharpness of the image captured by the second camera is greater than the The sharpness of the image captured by the first camera. 10. The device according to claim 6, wherein the processing unit is specifically configured to: when the focal length of the first camera is the same as that of the second camera, according to the determined first position changing the parameters, and performing electronic anti-shake processing on the image collected by the first camera at the shooting moment; or When the focal length of the first camera is different from the focal length of the second camera, based on the determined first position change parameter, according to the equivalent focal length of the second camera relative to the specified camera relative to the first camera The proportion of the equivalent focal length of the specified camera determines the second position change parameter required for the first camera to perform electronic anti-shake processing, and adjusts the position of the first camera according to the second position change parameter. The images collected at the time of shooting are electronically stabilized.