CN106254791A - Camera startup method and mobile terminal - Google Patents

Abstract

The invention discloses a starting method of a camera, which comprises the following steps: when a camera starting instruction is detected, the mobile terminal obtains the current environment brightness, sets the initial exposure time according to the current environment brightness, and starts the camera based on the set initial exposure time. The invention also discloses a mobile terminal, and the initial exposure time used when the camera is started is set based on the current environment brightness, namely the initial exposure time is suitable for the current environment brightness, so that the phenomenon of flicker can not occur when the camera is started and the use experience of a user is improved.

Description

Camera startup method and mobile terminal

technical field

The present invention relates to the technical field of mobile terminals, in particular to a method for starting a camera and a mobile terminal.

Background technique

With the development of science and technology, mobile phones have become an indispensable electronic device in people's daily life, almost one for each person. In addition to making calls, mobile phones also have many accessory functions, such as: camera function, camera function, video playback function, audio playback function and so on.

Among them, after the camera in the mobile phone is started, the default initial exposure time is usually used. However, since the initial exposure time does not meet the exposure requirements of all environmental conditions, flickering often occurs when the camera of the mobile phone is started.

In order to solve the above technical problems, the commonly used method at present is to keep the exposure time before the last shutdown of the camera, so that after the camera is started, the exposure time before the last shutdown is used as the initial exposure time. However, this method is only available after the last shutdown. Only when the environmental conditions of the camera are not much different from the environmental conditions when the camera is started this time will there be a certain effect of eliminating flicker. If it is larger, there will still be a flickering phenomenon when the camera is started.

However, the above-mentioned method cannot well solve the phenomenon that the camera flickers when starting. Therefore, how to prevent the camera from flickering when starting is an urgent problem to be solved at present.

Contents of the invention

The main purpose of the present invention is to provide a method for starting a camera and a mobile terminal, aiming at solving the technical problem that the camera flickers when starting in the prior art.

In order to achieve the above object, the first aspect of the present invention provides a method for starting a camera, the method comprising:

When the camera startup command is detected, the mobile terminal obtains the current ambient brightness;

The mobile terminal sets an initial exposure time according to the current ambient brightness;

The mobile terminal starts the camera based on the set initial exposure time.

In a first feasible implementation manner of the first aspect, the mobile terminal sets an initial exposure time according to the current ambient brightness, including:

Find the mapping relationship between the preset ambient brightness and exposure time, and determine the exposure time corresponding to the current ambient brightness;

The initial exposure time is set according to the exposure time corresponding to the current ambient brightness.

In the second feasible implementation manner of the first aspect, the acquiring the current environment brightness by the mobile terminal includes:

The mobile terminal acquires the current ambient brightness sensed by a light sensor provided in the mobile terminal.

In combination with the first aspect or the first feasible implementation of the first aspect or the second feasible implementation of the first aspect, in the third feasible implementation of the first aspect, the mobile terminal is based on the set The initial exposure time before starting the camera also includes:

The mobile terminal sets an initial exposure compensation value according to the current ambient brightness;

Then the mobile terminal starts the camera based on the set initial exposure time, including:

The mobile terminal starts the camera based on the set initial exposure time and the initial exposure compensation value.

In combination with the third feasible implementation of the first aspect, in the fourth feasible implementation of the first aspect, the mobile terminal sets an exposure compensation value according to the current ambient brightness, including:

Finding the mapping relationship between the preset ambient brightness and the exposure compensation value, and determining the exposure compensation value corresponding to the current ambient brightness;

The initial exposure compensation value is set according to the exposure compensation value corresponding to the current ambient brightness.

In order to solve the above problems, the second aspect of the present invention provides a mobile terminal, the mobile terminal includes:

An acquisition module, configured to acquire the current ambient brightness when a camera startup command is detected;

A first setting module, configured to set the initial exposure time according to the current ambient brightness;

A starting module, configured to start the camera based on the set initial exposure time.

In a first feasible implementation manner of the second aspect, the first setting module includes:

A first search module, configured to search for a mapping relationship between preset ambient brightness and exposure time, and determine the exposure time corresponding to the current ambient brightness;

A time setting module, configured to set the initial exposure time according to the exposure time corresponding to the current ambient brightness.

In a second feasible implementation manner of the second aspect, the acquisition module is specifically configured to:

When the camera startup instruction is detected, the current ambient brightness sensed by the light sensor provided in the mobile terminal is acquired.

In combination with the second aspect or the first feasible implementation manner of the second aspect or the second feasible implementation manner of the second aspect, in the third feasible implementation manner of the second aspect, the mobile terminal further includes:

The second setting module is used to set an initial exposure compensation value according to the current ambient brightness before the startup module;

The starting module is specifically configured to: start the camera based on the set initial exposure time and the initial exposure compensation value.

With reference to the third possible implementation of the second aspect, in the fourth possible implementation of the second aspect, the second setting module includes:

A second search module, configured to search for a mapping relationship between a preset ambient brightness and an exposure compensation value, and determine an exposure compensation value corresponding to the current ambient brightness;

A compensation setting module, configured to set the initial exposure compensation value according to the exposure compensation value corresponding to the current ambient brightness.

The present invention provides a method for starting a camera. In the method, when a camera start instruction is detected, the current ambient brightness is obtained, an initial exposure time is set according to the current ambient brightness, and the camera is started based on the set initial exposure time. Since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that there will be no flickering when the camera is started using this initial exposure time, which improves user experience. experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is a structural block diagram of a mobile terminal;

2 is a schematic flow chart of a method for starting a camera in the first embodiment of the present invention;

FIG. 3 is a schematic flow chart of the detailed steps of step 202 in the first embodiment shown in FIG. 2 of the present invention;

4 is a schematic flow chart of a method for starting a camera in a second embodiment of the present invention;

FIG. 5 is a schematic flow diagram of the refinement steps of step 403 in the second embodiment shown in FIG. 4 of the present invention;

FIG. 6 is a schematic diagram of functional modules of a mobile terminal in a third embodiment of the present invention;

FIG. 7 is a schematic diagram of a detailed functional module of the first setting module 602 in the third embodiment shown in FIG. 6 of the present invention;

FIG. 8 is a schematic diagram of functional modules of a mobile terminal in a fourth embodiment of the present invention;

FIG. 9 is a schematic diagram of detailed functional modules of the second setting module 801 in the fourth embodiment shown in FIG. 8 of the present invention.

detailed description

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Fig. 1 shows a structural block diagram of a mobile terminal. The method for starting the camera provided by the embodiment of the present invention can be applied to the mobile terminal 10 shown in Figure 1. The mobile terminal 10 can include, but is not limited to: smart phones and notebooks that need to rely on batteries to maintain normal operation and support network and download functions. , tablets, wearable smart devices, etc.

As shown in Figure 1, the mobile terminal 10 includes a memory 101, a storage controller 102, one or more (only one is shown in the figure) processors 103, a peripheral interface 104, a radio frequency module 105, a button module 106, an audio module 107 and a touch screen 108 . These components communicate with each other via one or more communication buses/signal lines 109 .

It can be understood that the structure shown in FIG. 1 is only for illustration, and does not limit the structure of the mobile terminal. The mobile terminal 10 may also include more or fewer components than those shown in FIG. 1 , or have a different configuration than that shown in FIG. 1 . Each component shown in FIG. 1 may be implemented by hardware, software or a combination thereof.

The memory 101 can be used to store software programs and modules, such as the starting method of the camera in the embodiment of the present invention and the corresponding program instructions/modules of the mobile terminal, and the processor 103 executes various functions by running the software programs and modules stored in the memory 101 Various functional applications and data processing, that is, to implement the method for starting the camera of the mobile terminal 10 described above.

The memory 101 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 101 may further include a memory that is remotely located relative to the processor 103, and these remote memories may be connected to the mobile terminal 10 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof. Access to the memory 101 by the processor 103 and possibly other components may be under the control of the memory controller 102 .

The peripheral interface 104 couples various input/output devices to the CPU and the memory 101 . The processor 103 runs various software and instructions in the memory 101 to execute various functions of the mobile terminal 10 and perform data processing.

In some embodiments, peripheral interface 104, processor 103, and memory controller 102 may be implemented in a single chip. In some other instances, they can be implemented by independent chips respectively.

The radio frequency module 105 is used to receive and send electromagnetic waves, realize mutual conversion between electromagnetic waves and electrical signals, and communicate with communication networks or other devices. The radio frequency module 105 may include various existing circuit elements for performing these functions, such as antenna, radio frequency transceiver, digital signal processor, encryption/decryption chip, Subscriber Identity Module (SIM) card, memory and so on. The radio frequency module 105 can communicate with various networks such as the Internet, an intranet, a preset type of wireless network, or communicate with other devices through a preset type of wireless network. The aforementioned preset type of wireless network may include a cellular telephone network, a wireless local area network or a metropolitan area network. The aforementioned preset type of wireless network can use various communication standards, protocols and technologies, including but not limited to Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE) , Wideband Code Division Multiple Access (W-CDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Bluetooth, Wi-Fi Technology (Wireless-Fidelity, WiFi) (such as IEEE802.11a, IEEE 802.11b, IEEE802.11g and/or IEEE 802.11n), Internet telephony (Voice over Internet Protocol, VoIP), global microwave interconnection In (Worldwide Interoperability for Microwave Access, Wi-Max), other protocols used for mail, instant messaging and short messages, and any other suitable communication protocols.

The button module 106 provides an interface for the user to input to the mobile terminal, and the user can press different buttons to make the mobile terminal 10 perform different functions.

The audio module 107 provides an audio interface to the user, which may include one or more microphones, one or more speakers, and audio circuitry. The audio circuit receives sound data from the peripheral interface 104, converts the sound data into electrical information, and transmits the electrical information to the speaker. Speakers convert electrical information into sound waves that can be heard by the human ear. The audio circuit also receives electrical information from the microphone, converts the electrical signal into sound data, and transmits the sound data to the peripheral interface 104 for further processing. Audio data can be obtained from the memory 101 or through the radio frequency module 105 . In addition, the audio data can also be stored in the memory 101 or sent through the radio frequency module 105 . In some examples, the audio module 107 may further include an earphone jack for providing an audio interface for earphones or other devices.

The touch screen 108 simultaneously provides an output and input interface between the mobile terminal and the user. Specifically, the touch screen 108 displays video output to the user, and the content of the video output may include text, graphics, video, and any combination thereof. Some output results correspond to some user interface objects. The touch screen 108 also receives user input, such as user gesture operations such as clicking and sliding, so that the user interface objects respond to these user inputs. The technique for detecting user input may be based on resistive, capacitive or any other possible touch detection techniques. Specific examples of the display unit of the touch screen 108 include, but are not limited to, liquid crystal displays or light emitting polymer displays.

The method for starting the camera in the embodiment of the present invention is described based on the above mobile terminal.

Since in the prior art, the camera tends to flicker when it is started, how to prevent the camera from flickering when it is started is an urgent problem to be solved at present.

In order to solve the above problems, the present invention proposes a camera startup method and a mobile terminal. In this method, when a camera startup command is detected, the current ambient brightness is obtained, and the initial exposure time is set according to the current ambient brightness, and based on the set The initial exposure time to start the camera. Since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that there will be no flickering when the camera is started using this initial exposure time, which improves user experience. experience.

Please refer to FIG. 2 , which is a schematic flow chart of the method for starting the camera in the first embodiment of the present invention. The method for starting the camera includes:

Step 201, when detecting the camera startup instruction, the mobile terminal acquires the current ambient brightness;

Step 202, the mobile terminal sets an initial exposure time according to the current ambient brightness;

Step 203, the mobile terminal starts the camera based on the set initial exposure time.

In the embodiment of the present invention, the mobile terminal usually has a camera, such as a front camera, a rear camera, etc., and the user can use the camera of the mobile terminal to take pictures and record videos.

In the embodiment of the present invention, if the mobile terminal detects a camera startup instruction, it will acquire the current ambient brightness, which refers to the brightness of the environment where the mobile terminal is currently located. The mobile terminal will set the initial exposure time of the camera according to the current ambient brightness, and start the camera based on the set initial exposure time.

In the embodiment of the present invention, since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that no flickering occurs when the camera is started using the initial exposure time phenomena to improve user experience.

Please refer to FIG. 3 , which is a schematic flow chart of the detailed steps of step 202 in the first embodiment shown in FIG. 2 of the present invention. The step 202 is: the mobile terminal sets an initial exposure time according to the current ambient brightness, and this step The refinement steps of 202 include:

Step 301. Find the mapping relationship between the preset ambient brightness and exposure time, and determine the exposure time corresponding to the current ambient brightness;

Step 302. Set the initial exposure time according to the exposure time corresponding to the current ambient brightness.

In the embodiment of the present invention, the mapping relationship between the ambient brightness and the exposure time is preset in the mobile terminal, wherein the mapping relationship between the ambient brightness and the exposure time can be obtained based on experiments before the mobile terminal or the camera leaves the factory. , and write it into the parameter storage area of the camera or mobile terminal. Among them, the experimental method can be to test the initial display effect of the camera when it is started under different initial exposure times under a certain fixed ambient brightness, and determine the best display effect based on the initial display effect of the camera when it is started under different initial exposure times. The optimal exposure time is used as the exposure time corresponding to the above-mentioned fixed ambient brightness, and through the above method, the exposure times corresponding to different ambient brightness can be obtained respectively.

In the embodiment of the present invention, after the mobile terminal detects the camera startup command, it will obtain the current ambient brightness, and search for the mapping relationship between the preset ambient brightness and exposure time, and determine the exposure time corresponding to the current ambient brightness. And the initial exposure time is set according to the exposure time corresponding to the current ambient brightness.

In the embodiment of the present invention, by using the mapping relationship between the environmental brightness and the exposure time preset in the mobile terminal, after the mobile terminal obtains the current environmental brightness, based on the mapping relationship between the environmental brightness and the exposure time, The exposure time corresponding to the current ambient brightness is determined, and the initial exposure time can be set based on the exposure time, effectively realizing the setting of the initial exposure time.

Further, in the first embodiment shown in FIG. 2, the above step 201 specifically includes:

The mobile terminal acquires the current ambient brightness sensed by a light sensor provided in the mobile terminal.

In the embodiment of the present invention, a light sensor is set in the mobile terminal, wherein the light sensor is also called a brightness sensor, which is generally located above the display screen of the mobile terminal and can be used to sense the light intensity to determine the current location of the mobile terminal. the brightness of the environment.

Wherein, when the mobile terminal detects the camera startup command, it will obtain the current ambient brightness sensed by the light sensor in the mobile terminal. Therefore, in the embodiment of the present invention, the mobile terminal can use the light sensor installed in the mobile terminal to The device acquires the current ambient brightness, so that the mobile terminal uses the current ambient brightness to set the initial exposure time of the camera.

Please refer to FIG. 4 , which is a schematic flow chart of the method for starting the camera in the second embodiment of the present invention. The method for starting the camera includes:

Step 401, when detecting the camera startup instruction, the mobile terminal acquires the current ambient brightness;

Step 402, the mobile terminal sets an initial exposure time according to the current ambient brightness;

Step 403, the mobile terminal sets an initial exposure compensation value according to the current ambient brightness;

Step 404, the mobile terminal starts the camera based on the set initial exposure time and the initial exposure compensation value.

It should be noted that, in this embodiment of the present invention, the content described in step 401 and step 402 is similar to the content described in step 201 and step 202 in the first embodiment shown in FIG. 2 , and details are not repeated here.

It should be noted that, in the second embodiment shown in FIG. 4, it is only illustrated by first executing step 402 and then executing step 403. In practical applications, the order of execution of step 402 and step 403 is not limited. The terminal may perform step 402 and step 403 at the same time, or may first perform step 403 and then perform step 402 .

In the embodiment of the present invention, after setting the initial exposure time according to the current ambient brightness, the mobile terminal will also set the initial exposure compensation value according to the current ambient brightness, and start the camera based on the set initial exposure time and initial exposure compensation value.

Among them, the function of the exposure compensation value is to increase the exposure value when the ambient light source is too dark, such as adjusting +1EV (Expose Value) or +2EV, or, when the ambient light source is bright, to reduce the exposure value, such as adjusting -1EV or -2EV, by setting the exposure compensation value, the exposure value of the camera when the camera is started can be more in line with the current ambient brightness.

In the embodiment of the present invention, when the camera startup command is detected, the mobile terminal obtains the current ambient brightness, and sets the initial exposure time and initial exposure compensation value according to the current ambient brightness, and the mobile terminal will set the initial exposure time and initial exposure compensation value based on the set initial exposure time and The initial exposure compensation value starts the camera. Since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that there will be no flickering when the camera is started using this initial exposure time, which improves user experience. experience. Furthermore, by setting the initial exposure compensation value based on the current ambient brightness, the flicker phenomenon when the camera is started can be further improved.

Please refer to FIG. 5 , which is a schematic flow chart of the refinement step of step 403 in the second embodiment shown in FIG. 4 of the present invention. The refinement steps of 403 include:

Step 501. Find the mapping relationship between the preset ambient brightness and exposure compensation value, and determine the exposure compensation value corresponding to the current ambient brightness;

Step 502. Set the initial exposure compensation value according to the exposure compensation value corresponding to the current ambient brightness.

In the embodiment of the present invention, the mapping relationship between the ambient brightness and the exposure compensation value is preset in the mobile terminal, wherein the mapping relationship between the ambient brightness and the exposure compensation time can be based on experiments before the mobile terminal or the camera leaves the factory. method, and write it into the parameter storage area of the camera or mobile terminal.

In the embodiment of the present invention, the mobile terminal will look up the mapping relationship between the preset ambient brightness and the exposure compensation value, determine the exposure compensation value corresponding to the current ambient brightness, and use the exposure compensation value corresponding to the current ambient brightness Set the initial exposure compensation value.

In the embodiment of the present invention, by using the mapping relationship between the ambient brightness and the exposure compensation value preset in the mobile terminal, when the mobile terminal detects the camera startup instruction, it can The mapping relationship determines the exposure compensation value corresponding to the current ambient brightness, and sets the initial exposure compensation value, which can effectively realize the setting of the initial exposure compensation value.

Please refer to FIG. 6 , which is a schematic diagram of the functional modules of the mobile terminal in the third embodiment of the present invention. The mobile terminal includes: an obtaining module 601 , a first setting module 602 and a starting module 603 .

An acquisition module 601, configured to acquire the current ambient brightness when a camera startup instruction is detected;

A first setting module 602, configured to set the initial exposure time according to the current ambient brightness;

A starting module 603, configured to start the camera based on the set initial exposure time.

In the embodiment of the present invention, the mobile terminal usually has a camera, such as a front camera, a rear camera, etc., and the user can use the camera of the mobile terminal to take pictures and record videos.

In the embodiment of the present invention, if the mobile terminal detects a camera startup instruction, the acquiring module 601 will acquire the current ambient brightness, which refers to the brightness of the environment where the mobile terminal is currently located. And the first setting module 602 will set the initial exposure time of the camera according to the current ambient brightness, and the starting module 603 will start the camera based on the set initial exposure time.

In the embodiment of the present invention, since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that no flickering occurs when the camera is started using the initial exposure time phenomena to improve the user experience.

Please refer to FIG. 7 , which is a schematic diagram of detailed functional modules of the first setting module 602 in the third embodiment shown in FIG. 6 of the present invention. The first setting module 602 includes: a first search module 701 and a time setting module 702 .

The first search module 701 is configured to search for a mapping relationship between preset ambient brightness and exposure time, and determine the exposure time corresponding to the current ambient brightness;

A time setting module 702, configured to set the initial exposure time according to the exposure time corresponding to the current ambient brightness.

In the embodiment of the present invention, the mapping relationship between the ambient brightness and the exposure time is preset in the mobile terminal, wherein the mapping relationship between the ambient brightness and the exposure time can be obtained based on experiments before the mobile terminal or the camera leaves the factory. , and write it into the parameter storage area of the camera or mobile terminal. Among them, the experimental method can be to test the initial display effect of the camera when it is started under different initial exposure times under a certain fixed ambient brightness, and determine the best display effect based on the initial display effect of the camera when it is started under different initial exposure times. The optimal exposure time is used as the exposure time corresponding to the above-mentioned fixed ambient brightness, and through the above method, the exposure times corresponding to different ambient brightness can be obtained respectively.

In the embodiment of the present invention, after the mobile terminal detects the camera startup command, the obtaining module 601 will obtain the current ambient brightness, and the first search module 701 will search for the mapping relationship between the preset ambient brightness and exposure time, and determine the The exposure time corresponding to the current ambient brightness, and the initial exposure time is set by the time setting module 702 according to the exposure time corresponding to the current ambient brightness.

In the embodiment of the present invention, by using the mapping relationship between the environmental brightness and the exposure time preset in the mobile terminal, after the mobile terminal obtains the current environmental brightness, based on the mapping relationship between the environmental brightness and the exposure time, The exposure time corresponding to the current ambient brightness is determined, and the initial exposure time can be set based on the exposure time, effectively realizing the setting of the initial exposure time.

Further, in the third embodiment shown in FIG. 6, the obtaining module 601 is specifically used for:

When the camera startup instruction is detected, the current ambient brightness sensed by the light sensor provided in the mobile terminal is acquired.

In the embodiment of the present invention, a light sensor is set in the mobile terminal, wherein the light sensor is also called a brightness sensor, which is generally located above the display screen of the mobile terminal and can be used to sense the light intensity to determine the current location of the mobile terminal. the brightness of the environment.

Wherein, when the mobile terminal detects the camera startup command, the obtaining module 601 will obtain the current ambient brightness sensed by the light sensor in the mobile terminal. Therefore, in the embodiment of the present invention, the mobile terminal can use the The light sensor of the device obtains the current ambient brightness, so that the mobile terminal can use the current ambient brightness to set the initial exposure time of the camera.

Please refer to FIG. 8, which is a schematic diagram of the functional modules of the mobile terminal in the fourth embodiment of the present invention. The mobile terminal includes the obtaining module 601, the first setting module 602 and the starting module 603 in the third embodiment shown in FIG. 6, wherein, The first setting module 602 includes: a first search module 701 and a time setting module 702, which are similar to those described in the third embodiment shown in FIG. 6 , and will not be repeated here.

In the embodiment of the present invention, the mobile terminal also includes:

The second setting module 801 is configured to set an initial exposure compensation value according to the current ambient brightness before the startup module;

The starting module 603 is specifically configured to: start the camera based on the set initial exposure time and the initial exposure compensation value.

In the embodiment of the present invention, after the mobile terminal sets the initial exposure time according to the current ambient brightness, the second setting module 801 will also set the initial exposure compensation value according to the current ambient brightness, and the startup module 603 will set the initial exposure time and Initial exposure compensation value to start the camera.

Among them, the function of the exposure compensation value is to increase the exposure value when the ambient light source is too dark, such as adjusting +1EV (Expose Value) or +2EV, or, when the ambient light source is bright, to reduce the exposure value, such as adjusting -1EV or -2EV, by setting the exposure compensation value, the exposure value of the camera when the camera is started can be more in line with the current ambient brightness.

In the embodiment of the present invention, when the camera startup command is detected, the mobile terminal obtains the current ambient brightness, and sets the initial exposure time and initial exposure compensation value according to the current ambient brightness, and the mobile terminal will set the initial exposure time and initial exposure compensation value based on the set initial exposure time and The initial exposure compensation value starts the camera. Since the initial exposure time used when the camera is started is set based on the current ambient brightness, that is, the initial exposure time is adapted to the current ambient brightness, so that there will be no flickering when the camera is started using this initial exposure time, which improves user experience. experience. Furthermore, by setting the initial exposure compensation value based on the current ambient brightness, the flicker phenomenon when the camera is started can be further improved.

Please refer to FIG. 9 , which is a schematic diagram of detailed functional modules of the second setting module 801 in the fourth embodiment shown in FIG. 8 of the present invention. The second setting module 801 includes: a second search module 901 and a compensation setting module 902 .

The second search module 901 is configured to search for a mapping relationship between a preset ambient brightness and an exposure compensation value, and determine an exposure compensation value corresponding to the current ambient brightness;

The compensation setting module 902 is configured to set the initial exposure compensation value according to the exposure compensation value corresponding to the current ambient brightness.

In the embodiment of the present invention, the mapping relationship between the ambient brightness and the exposure compensation value is preset in the mobile terminal, wherein the mapping relationship between the ambient brightness and the exposure compensation time can be based on experiments before the mobile terminal or the camera leaves the factory. method, and write it into the parameter storage area of the camera or mobile terminal.

In the embodiment of the present invention, the second search module 901 will search for the mapping relationship between the preset ambient brightness and the exposure compensation value, determine the exposure compensation value corresponding to the current ambient brightness, and use the compensation setting module 902 to use the The exposure compensation value corresponding to the current ambient brightness sets the initial exposure compensation value.

In the embodiment of the present invention, by using the mapping relationship between the ambient brightness and the exposure compensation value preset in the mobile terminal, when the mobile terminal detects the camera startup instruction, it can The mapping relationship determines the exposure compensation value corresponding to the current ambient brightness, and sets the initial exposure compensation value, which can effectively realize the setting of the initial exposure compensation value.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or may be distributed to multiple network modules. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, and other media that can store program codes.

It should be noted that, for the sake of simplicity of description, all the aforementioned method embodiments are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

The above is a description of a method for starting a camera and a mobile terminal provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application scope. Above all, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. the startup method of a photographic head, it is characterised in that described method includes:

When photographic head enabled instruction being detected, acquisition for mobile terminal current environment brightness；

Described mobile terminal arranges initial exposure time according to described current environment brightness；

Described mobile terminal starts described photographic head based on the described initial exposure time arranged.

Method the most according to claim 1, it is characterised in that described mobile terminal is arranged according to described current environment brightness Initial exposure time, including:

Search the mapping relations between ambient brightness and the time of exposure pre-set, determine corresponding with described current environment brightness Time of exposure；

The time of exposure corresponding according to described current environment brightness arranges described initial exposure time.

Method the most according to claim 1, it is characterised in that described acquisition for mobile terminal current environment brightness includes:

The described current environment brightness that the light sensor arranged in mobile terminal described in described acquisition for mobile terminal senses.

4. according to the method described in claims 1 to 3 any one, it is characterised in that described mobile terminal is based on having arranged Described initial exposure time also includes before starting described photographic head:

Described mobile terminal arranges initial exposure offset according to described current environment brightness；

The most described mobile terminal starts described photographic head based on the described initial exposure time arranged, including:

Described mobile terminal starts described shooting based on the described initial exposure time arranged and described initial exposure offset Head.

Method the most according to claim 4, it is characterised in that described mobile terminal is arranged according to described current environment brightness Exposure bias value, including:

Search the mapping relations between ambient brightness and the exposure bias value pre-set, determine and described current environment brightness pair The exposure bias value answered；

According to the exposure bias value that described current environment brightness is corresponding, described initial exposure offset is set.

6. a mobile terminal, it is characterised in that described mobile terminal includes:

Acquisition module, for when photographic head enabled instruction being detected, obtains current environment brightness；

First arranges module, for arranging described initial exposure time according to described current environment brightness；

Start module, for starting described photographic head based on the described initial exposure time arranged.

Mobile terminal the most according to claim 6, it is characterised in that described first arranges module includes:

First searches module, for searching the mapping relations between ambient brightness and the time of exposure pre-set, determines and institute State the time of exposure that current environment brightness is corresponding；

Set of time module, for arranging described initial exposure time according to the time of exposure that described current environment brightness is corresponding.

Mobile terminal the most according to claim 6, it is characterised in that described acquisition module specifically for:

When photographic head enabled instruction being detected, obtain that the light sensor arranged in described mobile terminal senses described works as Front ambient brightness.

9. according to the mobile terminal described in claim 6 to 8 any one, it is characterised in that mobile terminal also includes:

Second arranges module, for before described startup module, arranges initial exposure according to described current environment brightness and compensates Value；

The most described startup module specifically for: open based on the described initial exposure time arranged and described initial exposure offset Dynamic described photographic head.

Mobile terminal the most according to claim 9, it is characterised in that described second arranges module includes:

Second searches module, for searching the mapping relations between the ambient brightness and the exposure bias value that pre-set, determine with The exposure bias value that described current environment brightness is corresponding；

Compensation arranges module, compensates for arranging described initial exposure according to the exposure bias value that described current environment brightness is corresponding Value.