CN113128488A - Flash control method, flash control device, flash control terminal and storage medium - Google Patents
Flash control method, flash control device, flash control terminal and storage medium Download PDFInfo
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- CN113128488A CN113128488A CN202110433037.3A CN202110433037A CN113128488A CN 113128488 A CN113128488 A CN 113128488A CN 202110433037 A CN202110433037 A CN 202110433037A CN 113128488 A CN113128488 A CN 113128488A
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000003384 imaging method Methods 0.000 claims abstract description 245
- 238000012545 processing Methods 0.000 claims description 22
- 238000010586 diagram Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 14
- 239000013589 supplement Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013136 deep learning model Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/141—Control of illumination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
Abstract
The embodiment of the application discloses a flash control method, a flash control device, a flash control terminal and a flash control storage medium, wherein the flash control method comprises the following steps: judging the connection information of the external interface; if the connection information indicates that connection is established with the external flash device, a flash control mode is started, imaging information obtained based on the internal flash device in a target scene is determined, and a target control instruction for the external flash device is generated based on the imaging information; and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a flash control method, apparatus, terminal, and storage medium.
Background
The target terminals (mobile phones, tablet computers, etc.) are provided with fixed built-in flash devices (flash chip and flash lamp), and the user can control the built-in flash devices by inputting corresponding operations so as to adjust the imaging effect during shooting or realize the flashlight function, etc.
However, due to the wiring design of the hardware main board in the terminal and the control of the peripheral cost, the space reserved for the built-in flash device is limited, so that the flash hardware on the terminal is limited, and further, the use of the flash is limited, such as limited flash brightness, limited flash angle and the like, so that a good imaging effect cannot be obtained during shooting.
Disclosure of Invention
The embodiment of the application provides a flash control method, a flash control device, a flash control terminal and a storage medium, which can be combined with a built-in flash device and an external flash device to work cooperatively, so that the imaging effect during shooting is improved.
In one aspect, an embodiment of the present application provides a flash control method, where the method includes:
judging the connection information of the external interface;
if the connection information indicates that connection is established with an external flash device, a flash control mode is started, and the internal flash device and the external flash device flash in a cooperation mode in the flash control mode;
determining imaging information obtained based on the built-in flash device in a target scene, and generating a target control instruction for the external flash device based on the imaging information;
and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device.
In one aspect, an embodiment of the present application provides a flash control device, where the flash control device includes:
the judging module is used for judging the connection information of the external interface;
the starting module is used for starting a flash control mode if the connection information indicates that connection is established with an external flash device, and the internal flash device and the external flash device flash in a cooperation mode in the flash control mode;
the determining module is used for determining imaging information obtained based on the built-in flash device under a target scene;
the generating module is used for generating a target control instruction aiming at the external flash device based on the imaging information;
and the control module is used for controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device.
In one aspect, an embodiment of the present application provides a terminal, including a processor and a memory, where the memory is configured to store a computer program, and the computer program includes program instructions, and is characterized in that the processor is configured to call the program instructions to execute the flash control method.
In one aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program includes program instructions, which, when executed by a processor, cause the processor to execute a flash control method.
In the embodiment of the application, the terminal judges the connection information of the external interface; if the connection information indicates that connection is established with the external flash device, a flash control mode is started, imaging information obtained based on the internal flash device in a target scene is determined, and a target control instruction for the external flash device is generated based on the imaging information; and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a flash control method according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart of another flash control method provided in the embodiments of the present application;
fig. 3 is a schematic structural diagram of a flash control device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The flash control method provided by the embodiment of the application is realized on the terminal, and the terminal can be an electronic device with a camera shooting function, such as a mobile phone, a tablet personal computer and an electronic watch.
Fig. 1 is a schematic flow chart of a flash control method in an embodiment of the present application, and as shown in fig. 1, the flow chart of the flash control method in the embodiment may include:
and S101, judging the connection information of the external interface.
In this embodiment of the application, the external interface in the terminal may specifically be a USB interface, an earphone interface, or an interface dedicated to establishing connection with the external device in the terminal, and the external interface is specifically used for establishing connection between the external device and the terminal, so as to implement data sharing between the terminal and the external device. Specifically, the external interface may be used to establish a connection between the external flash device and the terminal, the external flash device may include at least one flash lamp, or the external flash device further includes a light processor for controlling the at least one flash lamp, the light processor is connected to the at least one flash lamp, in an optional implementation, the external flash device may further include an attaching device, specifically configured to attach the external flash device to a housing of the terminal, and the flash lamp may specifically be an led lamp. The connection information of the external interface specifically indicates whether the external device is connected with the terminal through the external interface. The terminal can judge the trigger instruction corresponding to the external interface and judge the connection information of the external interface. The judgment trigger instruction may be specifically generated based on a specified operation input by a user, and if the user inputs an opening operation for an image capturing function in the terminal, the judgment trigger instruction is generated, or the judgment trigger instruction may also be generated by detecting current environment information by the terminal, if the environment information is environment light, when the terminal detects that the current environment light brightness is lower than a preset brightness, the judgment trigger instruction is generated, and after the judgment trigger instruction is generated, the terminal determines the connection information of the external interface in response to the judgment trigger instruction.
In a specific implementation, the external flash device comprises a light processor, and the specific way for the terminal to judge the connection information of the external interface can be that the terminal sends an information acquisition instruction based on the external interface, wherein the information acquisition instruction is used for acquiring the connection information of the external interface; if a response instruction returned by the light processor based on the external interface is received, determining that the connection information of the external interface is established with the external flash device; and if a response instruction returned by the light processor based on the external interface is not received, determining that the connection information of the external interface is not connected with the external flash device. Namely, the terminal can interact with the light processor through the external interface, and when corresponding information returned by the light processor is received, the terminal is determined to be connected with the external flashing device. In an optional implementation manner, the external flash device does not include a light processor, and the specific manner in which the terminal determines the connection information of the external interface may be that a level trigger signal is sent through the external interface, where the level trigger signal is used to transmit current so that the flash lamp emits light, optionally, the terminal detects that ambient light changes after the level trigger information is sent through the camera, if the ambient light brightness is high, it is determined that the terminal has established connection with the external flash device, and if the ambient light brightness is unchanged, it is determined that the terminal has not established connection with the external flash device.
And S102, if the connection information indicates that the connection with the external flash device is established, starting a flash control mode.
In the embodiment of the application, the terminal can be internally provided with a flash device, namely the built-in flash device, the built-in flash device and the external flash device can cooperatively flash in a flash control mode, namely after the terminal determines that the external flash device is connected with the terminal, the flash control mode for controlling the built-in flash device and the external flash device to cooperatively flash is started, in the flash control mode, the terminal can flash based on a mode corresponding to an instruction by sending the instruction, and the mode corresponding to the instruction can be that the external flash device and the built-in flash device flash at corresponding brightness and flash at corresponding angles.
S103, determining imaging information obtained based on the built-in flash device in the target scene, and generating a target control instruction for the external flash device based on the imaging information.
In the embodiment of the application, after the terminal opens the flash control mode, imaging information obtained based on the built-in flash device in a target scene can be determined, wherein the imaging information obtained based on the built-in flash device specifically can be obtained by the terminal through a camera after the built-in flash device is opened, if the camera is opened in the target scene, imaging can be performed to display the obtained imaging in a preview interface in the terminal, or the terminal can determine an image shot in the target scene as imaging and obtain corresponding imaging in an album, and the terminal can analyze the imaging to obtain imaging brightness and an imaging light source angle in the imaging as the imaging information. The target scene may be a scene where the terminal is currently located, or a scene where the user needs to take a picture.
In a specific implementation, the terminal determines the imaging information obtained based on the built-in flash device in the target scene, and the terminal controls to start the built-in flash device to obtain the imaging in the target scene after the built-in flash device is started; and carrying out image recognition processing on the imaging to obtain the imaging brightness and the imaging light source angle in the imaging as the imaging information obtained based on the built-in flash device. The image under the target scene may be a specific image, and the specific image may reflect the contour of an object under the target scene, the brightness and the imaging definition of different areas in the image, and the like. In an embodiment, the specific manner of performing image recognition processing on the image by the terminal to obtain the imaging brightness in the image may be that the terminal performs graying processing on the image to obtain a grayscale image corresponding to the image, determines the grayscale value of each pixel point in the grayscale image, and determines the average of the grayscale values of each pixel point in the grayscale image as the imaging brightness. The specific mode of carrying out image identification processing on the imaging by the terminal to obtain the angle of the imaging light source in the imaging can be that the terminal divides the imaging into N areas, wherein N is a positive integer; determining the imaging brightness of each of the N regions to obtain an imaging brightness distribution map corresponding to imaging; and determining an imaging light source angle corresponding to the imaging brightness distribution diagram based on the corresponding relation between the pre-constructed brightness distribution diagram and the light source angle. The imaging method comprises the steps of dividing imaging into N areas, determining the imaging brightness of each of the N areas, determining the angle of an imaging light source based on the imaging brightness distribution of each area, for example, determining the corresponding relation of the angles of the imaging light source based on the pre-constructed imaging brightness distribution, and determining the corresponding angle of the imaging light source, for example, the angle of the imaging light source can be just corresponding to the area with the highest imaging brightness.
In an embodiment, the terminal performs image recognition processing on the imaging, and the specific manner of obtaining the imaging brightness and the imaging light source angle in the imaging may be that the terminal calls an image recognition model to process the imaging to obtain the imaging brightness and the imaging light source angle in the imaging, the image recognition model may specifically be a trained deep learning model, and the terminal may train an initial image recognition model by using a large number of image samples to obtain the image recognition model. Specifically, the training process of the image recognition model may specifically be that a sample image set is obtained, the sample image set includes a plurality of sample image combinations, each sample image combination includes one sample image and a preset imaging brightness and a preset imaging light source angle corresponding to the sample image, the initial image recognition model is trained based on each sample image combination in the sample image set to update parameters in the initial image recognition model, and if the initial recognition model after parameter update meets a preset condition, the initial recognition model after parameter update is determined as the image recognition model. Wherein when the imaging brightness prediction success rate and the imaging light source angle prediction success rate of the initial identification model after the parameter updating for each sample image are higher than the preset threshold values, the initial identification model after the parameter updating is determined to meet the preset conditions, when the predicted imaging brightness obtained by processing the sample image by using the initial identification model after the parameter updating is matched with the preset imaging brightness, the imaging brightness is determined to be successfully predicted, when the predicted imaging light source angle obtained by processing the sample image by using the initial identification model after the parameter updating is matched with the preset imaging light source angle, the imaging light source angle is determined to be successfully predicted, in the training process, sample images in the sample image combination are specifically input, and the initial image recognition model is used for processing the sample images to obtain the corresponding predicted imaging brightness and the predicted imaging light source angle of the sample images. Optionally, a brightness recognition model and a light source angle recognition model may be trained respectively based on a large number of sample images, the brightness recognition model is used to recognize imaging brightness in imaging, and the angle recognition model is used to recognize an imaging light source angle in imaging.
Optionally, after determining imaging information obtained based on the internal flash device in the target scene, the terminal generates a target control instruction for the external flash device based on the imaging information, where the target control instruction may include a position control instruction and a brightness control instruction, the position control instruction is used to control a flash position of the external flash device, and the brightness control instruction is used to control a flash brightness of the external flash device. In one implementation, the flash device is attached to a housing of the terminal, the flash device includes at least one flash lamp, each flash lamp can be located at different positions on the terminal housing, the terminal generates a position control command based on an imaging light source angle, the position control command is used for controlling an external target flash lamp at a target position in the at least one external flash lamp to flash, for example, the external flash device includes a first flash lamp located at the top of the terminal housing and a second flash lamp located at the bottom of the terminal housing, the imaging light source angle is an angle parallel to light emitted by the top flash lamp, it is described that a top region is bright, a bottom light source is needed to be used for light supplement, and the position control command generated by the terminal is used for controlling the second flash lamp located at the bottom of the terminal housing to flash. Namely, the terminal can determine the angle of light shortage through the angle of the imaging light source and trigger the flash lamp at the corresponding position to flash so as to perform light supplement processing on imaging. Similarly, the terminal generates a brightness control instruction based on the imaging brightness, and the brightness control instruction is used for controlling the flash brightness of the target external flash lamp; specifically, the terminal may determine the currently lacking brightness through the imaging brightness, that is, may control the corresponding external flash to flash with the corresponding brightness, so as to just supplement the lacking brightness. And the terminal determines the position control instruction and the brightness control instruction as target control instructions for the external flash device.
In one implementation manner, the external flash device control method is applied to a terminal, the external flash device is externally disposed on a housing of the terminal, a target control instruction includes a position adjustment instruction and a brightness adjustment instruction, and the external flash device is controlled based on the target control instruction in a target scene, including: under a target scene, adjusting the external flash device to a specified position on the shell based on the position adjusting instruction; and adjusting the external flash device to flash at the specified brightness based on the brightness adjusting instruction. The position adjusting instruction can be generated based on the angle of the imaging light source, and the brightness adjusting instruction can be generated based on the imaging brightness, or the position adjusting instruction can be generated based on the operation input by the user in the terminal, and the brightness adjusting instruction is also generated based on the operation input by the user.
And S104, controlling the external flash device based on the target control instruction in the target scene to realize the cooperative work of the internal flash device and the external flash device.
In the embodiment of the application, after the terminal generates the target control instruction for the external flash device, the external flash device is controlled based on the target control instruction in the target scene, so that the cooperative work of the internal flash device and the external flash device is realized.
In one implementation manner, the target control instruction includes a position control instruction and a brightness control instruction, the terminal may specifically send the position control instruction to the external flash device, so that the external flash lamp of the target at the target position in the external flash device flashes, and the terminal may send the brightness control instruction to the external flash device, so that the flash brightness of the external flash lamp in the external flash device is the brightness corresponding to the brightness control instruction, and the captured image has a good imaging effect.
In one implementation mode, the external flash device is externally arranged on a shell of the terminal, the target control instruction comprises a position adjusting instruction and a brightness adjusting instruction, and the terminal controls the external flash device based on the target control instruction in a target scene in such a way that the external flash device is adjusted to a specified position on the shell based on the position adjusting instruction in the target scene; specifically, the external flash device may slide on the terminal housing, and the terminal may generate a position adjustment instruction to slide the external flash device to a specified position on the housing. The terminal can display the designated position where the external flash device is to be placed in the display interface, and the user adjusts the external flash device to the designated position after inquiring the position. Optionally, the terminal adjusts the external flash device to flash at a specified brightness based on the brightness adjustment instruction, that is, the brightness control instruction may specifically control the flash brightness of the external flash. The terminal can detect touch operation aiming at the shell; if the touch operation is matched with the preset operation, generating a flash adjusting instruction based on the touch operation; and controlling the built-in flash device and the external flash device to adjust based on the flash adjusting instruction. Specifically, the housing of the terminal may include a capacitance sensing device, which is used for sensing an operation input by the user in the housing and feeding back the operation to the terminal to generate a corresponding flash adjustment instruction.
It should be noted that when the terminal sends an external flash instruction to control the external flash device to flash, the terminal can select to turn on or turn off the internal flash device, and in this way, the terminal controls the external flash lamp through the external interface, and automatically turns on the corresponding external flash lamp to automatically supplement light based on the deficiency of the internal flash lamp in the imaging effect, thereby improving the shooting effect.
In the embodiment of the application, the terminal judges the connection information of the external interface; if the connection information indicates that connection is established with the external flash device, a flash control mode is started, imaging information obtained based on the internal flash device in a target scene is determined, and a target control instruction for the external flash device is generated based on the imaging information; and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
Fig. 2 is a schematic flow chart of another flash control method in the embodiment of the present application, and as shown in fig. 1, the flow chart of the flash control method in the embodiment may include:
s201, obtaining the ambient light brightness in the target scene.
In the embodiment of the application, the target scene can be a scene where the terminal is currently located, and the terminal can acquire the ambient light in the target scene by starting the camera and analyze and process the ambient light to obtain the brightness of the ambient light. The terminal can automatically start the camera, or the camera is started when the user needs to shoot and open the camera application.
S202, if the brightness of the environment light is lower than the preset brightness, the connection information of the external interface is judged.
In the embodiment of the application, after the terminal acquires the brightness of the environment, whether the brightness of the environment is lower than the preset brightness or not is detected, if so, the connection information of the external interface is judged, the external interface is specifically used for establishing connection between the external device and the terminal, so that data sharing between the terminal and the external device is realized, and the connection information of the external interface specifically indicates whether the terminal is connected with the external device or not and the specific information of the external device establishing connection with the terminal.
And S203, if the connection information indicates that the connection with the external flash device is established, starting a flash control mode.
In the embodiment of the application, a flash device can be arranged in the terminal, namely the built-in flash device, when the terminal detects that the terminal is connected with the external flash device, the flash control mode can be started, and the built-in flash device and the external flash device can cooperatively flash in the flash control mode. If the built-in flash lamp is controlled to flash, the external flash device is controlled to flash at the appointed position, so that light is supplemented to the built-in flash device. Optionally, if the connection information indicates that the terminal is not connected to the external flash device, a single-flash control mode is started, the internal flash device flashes based on the received instruction in the single-flash control mode, and the terminal receives the internal control instruction input by the internal flash device and controls the internal flash device to flash based on the internal control instruction. Namely, the terminal can control the built-in flash device based on the operation input by the user, so that light is supplemented through the built-in flash device when the user takes a picture.
S204, determining imaging information obtained based on the built-in flash device in the target scene, and generating a target control instruction for the external flash device based on the imaging information.
In the embodiment of the application, the imaging information comprises imaging brightness and an imaging light source angle in imaging, and the mode that the terminal determines the imaging information obtained based on the built-in flash device in a target scene can be that the built-in flash device is controlled to be started to obtain imaging in the target scene after the built-in flash device is started; and carrying out image recognition processing on the imaging to obtain the imaging brightness and the imaging light source angle in the imaging as the imaging information obtained based on the built-in flash device. The terminal can perform graying processing on the imaging to obtain a grayscale image corresponding to the imaging; and determining the gray value of each pixel point in the gray image, and determining the average value of the gray values of the pixel points in the gray image as the imaging brightness. And dividing the image into N regions, N being a positive integer; determining the imaging brightness of each of the N regions to obtain an imaging brightness distribution map corresponding to imaging; and determining an imaging light source angle corresponding to the imaging brightness distribution diagram based on the corresponding relation between the pre-constructed brightness distribution diagram and the light source angle. The imaging brightness of each region can be determined based on the gray average value of the pixel points in each region in the gray image corresponding to imaging.
Optionally, the terminal generates a target control instruction for the external flash device based on the imaging information, in one embodiment, the target control instruction includes a position control instruction, and the terminal specifically generates the position control instruction based on an imaging light source angle, where the position control instruction is used to control a target external flash at a target position in at least one external flash to flash. In one embodiment, the target control instruction comprises a brightness control instruction, and the brightness control instruction is used for controlling the flash brightness of the target external flash lamp; in one embodiment, the external flash device is externally arranged on a shell of the terminal, the target control instruction comprises a position adjusting instruction, the terminal generates the position adjusting instruction based on the angle of the imaging light source, and the position adjusting instruction is specifically used for adjusting the external flash device to a specified position on the shell. The terminal can confirm the position that needs the light filling based on the formation of image light source angle promptly, and the position adjustment instruction of the position department of adjusting external flash of light device to needs the light filling is generated. In one embodiment, the target control instruction comprises a position control instruction brightness adjusting instruction, and the terminal generates a brightness adjusting instruction based on the imaging brightness, wherein the brightness adjusting instruction is used for adjusting an external flash device to flash at a specified brightness. The terminal can determine the luminance of the light supplement required based on the imaging luminance and generate a luminance adjusting instruction for adjusting the flash luminance of the external flash device to the luminance of the light supplement.
And S205, controlling the external flash device based on the target control instruction in the target scene to realize the cooperative work of the internal flash device and the external flash device.
In the embodiment of the application, after the terminal generates the target control instruction for the external flash device, the external flash device is controlled based on the target control instruction in the target scene, so that the cooperative work of the internal flash device and the external flash device is realized. Specifically, the terminal controls the target external flash lamp at the target position in the at least one external flash lamp to flash based on the target control instruction, and controls the flash brightness of the target external flash lamp to be the designated brightness. Or the external flash device is externally arranged on a shell of the terminal, the target control instruction comprises a position adjusting instruction and a brightness adjusting instruction, and the terminal adjusts the external flash device to a specified position on the shell based on the position adjusting instruction in a target scene; and adjusting the external flash device to flash at the specified brightness based on the brightness adjusting instruction.
S206, obtaining the target imaging obtained after the external flash device is controlled, and determining target imaging information corresponding to the target imaging.
In the embodiment of the application, after the terminal controls the external flash device, the target image obtained after the external flash device is controlled is obtained, that is, the image obtained after the external flash device is used for shooting is obtained. And the terminal processes the target imaging to obtain target imaging information, wherein the target imaging information comprises target imaging brightness or target imaging definition. The determination method of the target imaging brightness may be that gray processing is performed on the target imaging to obtain a target gray image, and an average value of gray values of each pixel point in the target gray image is used as the target imaging brightness. The determination method of the target imaging definition may be that fourier transform is performed on the target imaging to obtain noise in the target imaging, and the target imaging definition is determined based on a correspondence between the noise and the definition.
And S207, checking whether the target imaging information meets a preset condition.
In the embodiment of the application, after the terminal acquires the target imaging information, whether the target imaging information meets the preset condition is checked. When the target imaging brightness is determined to be greater than the preset brightness, or the target imaging definition is determined to be greater than the preset definition, or the target imaging brightness is greater than the preset brightness and the target imaging definition is greater than the preset definition, it is determined that the target imaging information meets the preset condition, and when the target imaging information meets the preset condition, the terminal can end the process. And when the terminal judges that the imaging effect obtained after the external flash device is adopted for flashing is ideal enough, no adjustment is carried out. Alternatively, when it is determined that the target imaging information does not satisfy the preset condition, step 208 is performed.
And S208, if not, generating a flash adjustment strategy based on the target imaging information, and outputting a flash adjustment strategy set.
In the embodiment of the application, when the terminal determines that the target imaging information does not meet the preset condition, the terminal may generate a flash adjustment strategy based on the target imaging information and output a flash adjustment strategy set. The flash adjustment strategy set comprises at least one adjustment strategy for adjusting the position and the brightness of an external flash lamp in an external flash device, wherein a corresponding relation between target imaging information and the flash adjustment strategy can be constructed in advance by research and development personnel, and a corresponding adjustment strategy set is found out subsequently based on the corresponding relation. For example, if the imaging brightness of the target in the target imaging information is low, the adjustment policy 1 may be generated to flash the flash lamp at a specified position in the external flash device, and the adjustment policy 2 may be generated to adjust the brightness of the flash lamp in the external flash device to a specified brightness. The terminal outputs the flash adjustment strategy set, the adjustment strategy set can be displayed in a display interface specifically, and a user can input selection operation aiming at each adjustment strategy in the adjustment strategy set so as to select the adjustment strategy.
S209, receiving a selection instruction aiming at the target adjusting strategy in the flash adjusting strategy set.
In the embodiment of the application, after the terminal outputs the target adjustment strategy, the selection operation for the target adjustment strategy in the flash adjustment strategy set, which is input by the user, may be received, and a selection instruction for the target adjustment strategy is triggered and generated.
And S210, adjusting the external flash device based on the target adjusting strategy.
In the embodiment of the application, after the terminal receives the selection instruction for the target adjustment strategy in the flash adjustment strategy set, the external flash device can be adjusted based on the target adjustment strategy. The method specifically applies the adjustment strategy to the external flash device, such as adjusting the position of a flash lamp in the external flash device, the brightness of the flash lamp in the external flash device, and the like, so as to improve the shooting effect during shooting.
In the embodiment of the application, the terminal judges the connection information of the external interface; if the connection information indicates that connection is established with the external flash device, a flash control mode is started, imaging information obtained based on the internal flash device in a target scene is determined, and a target control instruction for the external flash device is generated based on the imaging information; and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
The flash control device provided by the embodiment of the present application will be described in detail with reference to fig. 3. It should be noted that the flash control device shown in fig. 3 is used for executing the method of the embodiment shown in fig. 1 and fig. 2 of the present application, and for convenience of description, only the portion related to the embodiment of the present application is shown, and specific technical details are not disclosed, and reference is made to the embodiment shown in fig. 1 and fig. 2 of the present application.
Referring to fig. 3, a schematic structural diagram of a flash control device 30 according to the present disclosure is shown, where the flash control device includes: the device comprises a judging module 301, an opening module 302, a determining module 303, a generating module 304 and a control module 305.
The judging module 301 is configured to judge connection information of the external interface;
a starting module 302, configured to start a flash control mode if the connection information indicates that a connection is established with an external flash device, where the flash control mode is implemented by a cooperation between the internal flash device and the external flash device;
a determining module 303, configured to determine imaging information obtained based on the built-in flash device in a target scene;
a generating module 304 for generating a target control instruction for the external flash device based on the imaging information;
a control module 305, configured to control the external flash device based on the target control instruction in the target scene, so as to implement cooperative work of the internal flash device and the external flash device.
In an implementation manner, the determining module 301 is specifically configured to:
sending an information acquisition instruction based on an external interface, wherein the information acquisition instruction is used for acquiring connection information of the external interface;
if a response instruction returned by the light processor based on the external interface is received, determining that the connection information of the external interface is established with an external flash device;
and if a response instruction returned by the light processor based on the external interface is not received, determining that the connection information of the external interface is not connected with the external flash device.
In an implementation manner, the determining module 303 is specifically configured to:
controlling to start the built-in flash device to obtain imaging of the built-in flash device in a target scene after the built-in flash device is started;
and carrying out image recognition processing on the imaging to obtain the imaging brightness and the imaging light source angle in the imaging as the imaging information obtained based on the built-in flash device.
In an implementation manner, the determining module 303 is specifically configured to:
carrying out graying processing on the imaging to obtain a grayscale image corresponding to the imaging;
and determining the gray value of each pixel point in the gray image, and determining the average value of the gray values of the pixel points in the gray image as the imaging brightness.
In an implementation manner, the determining module 303 is specifically configured to:
dividing the image into N regions, N being a positive integer;
determining the imaging brightness of each of the N regions to obtain an imaging brightness distribution map corresponding to the imaging;
and determining an imaging light source angle corresponding to the imaging brightness distribution diagram based on the corresponding relation between the pre-constructed brightness distribution diagram and the light source angle.
In an implementation, the generating module 304 is specifically configured to:
generating a position control instruction based on the imaging light source angle, wherein the position control instruction is used for controlling a target external flash lamp at a target position in the at least one external flash lamp to flash;
generating a brightness control instruction based on the imaging brightness, wherein the brightness control instruction is used for controlling the flash brightness of the target external flash lamp;
and determining the position control instruction and the brightness control instruction as target control instructions for the external flash device.
In one implementation, the control module 305 is specifically configured to:
and controlling the target external flash lamp at the target position in the at least one external flash lamp to flash based on the target control instruction, and controlling the flash brightness of the target external flash lamp to be the specified brightness.
In one implementation, the starting module 302 is further configured to:
and if the connection information indicates that the connection with the external flash device is not established, starting a single-flash control mode, wherein the built-in flash device flashes based on the received instruction in the single-flash control mode.
And receiving a built-in control instruction input by the built-in flash device, and controlling the built-in flash device to flash based on the built-in control instruction.
In one implementation, the control module 305 is specifically configured to:
under the target scene, adjusting the external flash device to a specified position on the shell based on the position adjusting instruction;
and adjusting the external flash device to flash at a specified brightness based on the brightness adjustment instruction.
In one implementation, the control module 305 is specifically configured to:
detecting a touch operation for the housing;
if the touch operation is matched with a preset operation, generating a flash adjusting instruction based on the touch operation;
and controlling the built-in flash device and the external flash device to adjust based on the flash adjusting instruction.
In one implementation, the determining module 301 is further configured to:
acquiring the ambient light brightness under a target scene;
and if the ambient light brightness is lower than the preset brightness, executing the operation of judging the connection information of the external interface.
In one implementation, the control module 305 is further configured to:
acquiring target imaging obtained after the external flash device is controlled, and determining target imaging information corresponding to the target imaging, wherein the target imaging information comprises target imaging brightness or target imaging definition;
checking whether the target imaging information meets a preset condition;
and if not, generating a flash adjustment strategy based on the target imaging information, and outputting the flash adjustment strategy set, wherein the flash adjustment strategy set comprises at least one adjustment strategy for adjusting the position and the brightness of an external flash lamp in the external flash device.
In one implementation, the control module 305 is further configured to:
receiving a selection instruction for a target adjustment strategy in the flash adjustment strategy set;
adjusting the external flash device based on the target adjustment strategy.
In this embodiment, the determining module 301 determines connection information of the external interface; if the connection information indicates that connection is established with the external flash device, the starting module 302 starts a flash control mode in which the internal flash device and the external flash device cooperatively flash; the determining module 303 determines imaging information obtained based on a built-in flash device in a target scene; the generation module 304 generates a target control instruction for the external flash device based on the imaging information; the control module 305 controls the external flash device based on the target control instruction in the target scene to realize cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
Please refer to fig. 4, which provides a schematic structural diagram of a terminal according to an embodiment of the present application. As shown in fig. 4, the terminal includes: at least one processor 401, input devices 403, output devices 404, memory 405, at least one communication bus 402. Wherein a communication bus 402 is used to enable connective communication between these components. The input device 403 may be a control panel or a microphone, and the output device 404 may be a display screen. The memory 405 may be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 405 may alternatively be at least one storage device located remotely from the aforementioned processor 401. Wherein the processor 401 may be combined with the apparatus described in fig. 3, the memory 405 stores a set of program codes, and the processor 401, the input device 403, and the output device 404 call the program codes stored in the memory 405 to perform the following operations:
the processor 401 is configured to determine connection information of the external interface;
a processor 401, configured to start a flash control mode if the connection information indicates that a connection is established with an external flash device, where the flash control mode is implemented by a cooperation between the internal flash device and the external flash device;
a processor 401, configured to determine imaging information obtained based on the internal flash device in a target scene, and generate a target control instruction for the external flash device based on the imaging information;
and the processor 401 is configured to control the external flash device based on the target control instruction in the target scene, so as to implement cooperative work of the internal flash device and the external flash device.
In one implementation, the processor 401 is specifically configured to:
sending an information acquisition instruction based on an external interface, wherein the information acquisition instruction is used for acquiring connection information of the external interface;
if a response instruction returned by the light processor based on the external interface is received, determining that the connection information of the external interface is established with an external flash device;
and if a response instruction returned by the light processor based on the external interface is not received, determining that the connection information of the external interface is not connected with the external flash device.
In one implementation, the processor 401 is specifically configured to:
controlling to start the built-in flash device to obtain imaging of the built-in flash device in a target scene after the built-in flash device is started;
and carrying out image recognition processing on the imaging to obtain the imaging brightness and the imaging light source angle in the imaging as the imaging information obtained based on the built-in flash device.
In one implementation, the processor 401 is specifically configured to:
carrying out graying processing on the imaging to obtain a grayscale image corresponding to the imaging;
and determining the gray value of each pixel point in the gray image, and determining the average value of the gray values of the pixel points in the gray image as the imaging brightness.
In one implementation, the processor 401 is specifically configured to:
dividing the image into N regions, N being a positive integer;
determining the imaging brightness of each of the N regions to obtain an imaging brightness distribution map corresponding to the imaging;
and determining an imaging light source angle corresponding to the imaging brightness distribution diagram based on the corresponding relation between the pre-constructed brightness distribution diagram and the light source angle.
In one implementation, the processor 401 is specifically configured to:
generating a position control instruction based on the imaging light source angle, wherein the position control instruction is used for controlling a target external flash lamp at a target position in the at least one external flash lamp to flash;
generating a brightness control instruction based on the imaging brightness, wherein the brightness control instruction is used for controlling the flash brightness of the target external flash lamp;
and determining the position control instruction and the brightness control instruction as target control instructions for the external flash device.
In one implementation, the processor 401 is specifically configured to:
and controlling the target external flash lamp at the target position in the at least one external flash lamp to flash based on the target control instruction, and controlling the flash brightness of the target external flash lamp to be the specified brightness.
In one implementation, the processor 401 is specifically configured to:
and if the connection information indicates that the connection with the external flash device is not established, starting a single-flash control mode, wherein the built-in flash device flashes based on the received instruction in the single-flash control mode.
And receiving a built-in control instruction input by the built-in flash device, and controlling the built-in flash device to flash based on the built-in control instruction.
In one implementation, the processor 401 is specifically configured to:
under the target scene, adjusting the external flash device to a specified position on the shell based on the position adjusting instruction;
and adjusting the external flash device to flash at a specified brightness based on the brightness adjustment instruction.
In one implementation, the processor 401 is specifically configured to:
detecting a touch operation for the housing;
if the touch operation is matched with a preset operation, generating a flash adjusting instruction based on the touch operation;
and controlling the built-in flash device and the external flash device to adjust based on the flash adjusting instruction.
In one implementation, the processor 401 is specifically configured to:
acquiring the ambient light brightness under a target scene;
and if the ambient light brightness is lower than the preset brightness, executing the operation of judging the connection information of the external interface.
In one implementation, the processor 401 is specifically configured to:
acquiring target imaging obtained after the external flash device is controlled, and determining target imaging information corresponding to the target imaging, wherein the target imaging information comprises target imaging brightness or target imaging definition;
checking whether the target imaging information meets a preset condition;
and if not, generating a flash adjustment strategy based on the target imaging information, and outputting the flash adjustment strategy set, wherein the flash adjustment strategy set comprises at least one adjustment strategy for adjusting the position and the brightness of an external flash lamp in the external flash device.
In one implementation, the processor 401 is specifically configured to:
receiving a selection instruction for a target adjustment strategy in the flash adjustment strategy set;
adjusting the external flash device based on the target adjustment strategy.
In this embodiment, the processor 401 determines connection information of the external interface; if the connection information indicates that connection is established with the external flash device, a flash control mode is started, imaging information obtained based on the internal flash device in a target scene is determined, and a target control instruction for the external flash device is generated based on the imaging information; and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device. By the method, the built-in flash device and the external flash device can be combined to work cooperatively, and the imaging effect during shooting is improved.
The modules in the embodiments of the present application may be implemented by a general-purpose Integrated Circuit, such as a CPU (central Processing Unit), or an ASIC (application Specific Integrated Circuit).
It should be understood that, in the embodiment of the present application, the Processor 401 may be a Central Processing Unit (CPU), and the Processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The bus 402 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like, and the bus 402 may be divided into an address bus, a data bus, a control bus, and the like, where fig. 4 only shows one thick line for convenience of illustration, but does not show only one bus or one type of bus.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware that is related to instructions of a computer program, and the program can be stored in a computer storage medium, and when executed, can include the processes of the embodiments of the methods described above. The computer storage medium may be a magnetic disk, an optical disk, a Read-only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.
Claims (15)
1. A flash control method, the method comprising:
judging the connection information of the external interface;
if the connection information indicates that connection is established with an external flash device, a flash control mode is started, and the internal flash device and the external flash device flash in a cooperation mode in the flash control mode;
determining imaging information obtained based on the built-in flash device in a target scene, and generating a target control instruction for the external flash device based on the imaging information;
and controlling the external flash device based on the target control instruction in the target scene so as to realize the cooperative work of the internal flash device and the external flash device.
2. The method as claimed in claim 1, wherein the external flash device includes a light processor, and the determining the connection information of the external interface includes:
sending an information acquisition instruction based on an external interface, wherein the information acquisition instruction is used for acquiring connection information of the external interface;
if a response instruction returned by the light processor based on the external interface is received, determining that the connection information of the external interface is established with an external flash device;
and if a response instruction returned by the light processor based on the external interface is not received, determining that the connection information of the external interface is not connected with the external flash device.
3. The method of claim 1, wherein the determining imaging information based on the built-in flash device under the target scene comprises:
controlling to start the built-in flash device to obtain imaging of the built-in flash device in a target scene after the built-in flash device is started;
and carrying out image recognition processing on the imaging to obtain the imaging brightness and the imaging light source angle in the imaging as the imaging information obtained based on the built-in flash device.
4. The method according to claim 3, wherein the performing image recognition processing on the image to obtain the imaging brightness in the image comprises:
carrying out graying processing on the imaging to obtain a grayscale image corresponding to the imaging;
and determining the gray value of each pixel point in the gray image, and determining the average value of the gray values of the pixel points in the gray image as the imaging brightness.
5. The method of claim 3, wherein the performing image recognition processing on the image to obtain an imaging light source angle in the image comprises:
dividing the image into N regions, N being a positive integer;
determining the imaging brightness of each of the N regions to obtain an imaging brightness distribution map corresponding to the imaging;
and determining an imaging light source angle corresponding to the imaging brightness distribution diagram based on the corresponding relation between the pre-constructed brightness distribution diagram and the light source angle.
6. The method of claim 3, wherein the external flash device comprises at least one external flash, and wherein generating the target control instruction for the external flash device based on the imaging information comprises:
generating a position control instruction based on the imaging light source angle, wherein the position control instruction is used for controlling a target external flash lamp at a target position in the at least one external flash lamp to flash;
generating a brightness control instruction based on the imaging brightness, wherein the brightness control instruction is used for controlling the flash brightness of the target external flash lamp;
and determining the position control instruction and the brightness control instruction as target control instructions for the external flash device.
7. The method of claim 6, wherein the controlling the external flash device based on the target control instruction in the target scene comprises:
and controlling the target external flash lamp at the target position in the at least one external flash lamp to flash based on the target control instruction, and controlling the flash brightness of the target external flash lamp to be the specified brightness.
8. The method according to claim 1, wherein after determining the connection information of the external interface, the method further comprises:
if the connection information indicates that connection with the external flash device is not established, a single-flash control mode is started, and the internal flash device flashes based on the received instruction in the single-flash control mode;
and receiving a built-in control instruction input by the built-in flash device, and controlling the built-in flash device to flash based on the built-in control instruction.
9. The method according to claim 1, wherein the external flash device control method is applied to a terminal, the external flash device is externally arranged on a housing of the terminal, the target control instruction comprises a position adjustment instruction and a brightness adjustment instruction, and the controlling of the external flash device based on the target control instruction in the target scene comprises:
under the target scene, adjusting the external flash device to a specified position on the shell based on the position adjusting instruction;
and adjusting the external flash device to flash at a specified brightness based on the brightness adjustment instruction.
10. The method of claim 9, further comprising:
detecting a touch operation for the housing;
if the touch operation is matched with a preset operation, generating a flash adjusting instruction based on the touch operation;
and controlling the built-in flash device and the external flash device to adjust based on the flash adjusting instruction.
11. The method according to claim 1, wherein before determining the connection information of the external interface, the method further comprises:
acquiring the ambient light brightness under a target scene;
and if the ambient light brightness is lower than the preset brightness, executing the operation of judging the connection information of the external interface.
12. The method of claim 1, wherein after controlling the external flash device based on the target control instruction in the target scene, the method further comprises:
acquiring target imaging obtained after the external flash device is controlled, and determining target imaging information corresponding to the target imaging, wherein the target imaging information comprises target imaging brightness or target imaging definition;
checking whether the target imaging information meets a preset condition;
and if not, generating a flash adjustment strategy based on the target imaging information, and outputting the flash adjustment strategy set, wherein the flash adjustment strategy set comprises at least one adjustment strategy for adjusting the position and the brightness of an external flash lamp in the external flash device.
13. The method of claim 12, wherein after outputting the set of flash adjustment strategies, the method further comprises:
receiving a selection instruction for a target adjustment strategy in the flash adjustment strategy set;
adjusting the external flash device based on the target adjustment strategy.
14. A terminal, comprising a processor, an input device, an output device, and a memory, the processor, the input device, the output device, and the memory being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of any of claims 1-13.
15. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method according to any one of claims 1-13.
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| CN202110433037.3A CN113128488A (en) | 2021-04-21 | 2021-04-21 | Flash control method, flash control device, flash control terminal and storage medium |
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