A combined focus shooting control method, device and computer readable storage medium

Abstract

The application discloses a combined focus shooting control method and device and a computer readable storage medium, and the method comprises the following steps: calculating the preview image, the exposure time and the photosensitivity obtained by a preset camera to obtain the average excitation brightness of a focus area; when the average excitation brightness is less than a first preset threshold, deep focus is adopted for shooting; when the average excitation brightness is greater than or equal to the first preset threshold, the average value of the convolution result of the pixels of the focus area of the preview image is calculated; when the average value is less than a second preset threshold, deep focus is adopted for shooting, and when the average value is greater than or equal to the second preset threshold, phase focus is adopted for shooting. A more humanized combined focus shooting control scheme is realized, the rapid adaptability, focus stability and focus accuracy of focus shooting in various scenes are improved, and the shooting experience of users is enhanced.

Description

Technical Field

[0001] This invention relates to the field of mobile communications, and more particularly to a combined focus shooting control method, device, and computer-readable storage medium. Background Technology

[0002] In current technology, with the continuous development of smart terminal devices, users' demands for device photography are also increasing. In particular, PDAF (Phase Detection Auto Focus) is currently the mainstream focusing method for cameras on mobile phones and other devices. Phase Detection Auto Focus requires special pixels; the object distance is determined by the phase difference between these pixels, thus determining the lens movement direction to guide focusing. However, phase Detection Auto Focus relies on the phase difference between pixels, therefore, it is not suitable when there is insufficient light or when the focus target is a smooth, solid-color plane. To solve the above technical problems, ToF (Ton-of-Flight) focusing is currently used as a replacement. This focusing scheme is an active focusing method where the shooting device sends infrared light and receives the infrared light reflected back from the object to determine the object distance and guide focusing. However, this solution also has adaptability issues; that is, ToF focusing accuracy is affected in bright light and when there is a lot of infrared light in the environment. Also, because ToF focusing requires an additional ToF camera, its power consumption is relatively high.

[0003] Therefore, improving the adaptability, stability, and focusing accuracy of the equipment for focusing and shooting has become an urgent technical problem to be solved. Summary of the Invention

[0004] To address the aforementioned technical deficiencies in the prior art, this invention proposes a combined focusing and shooting control method, which includes: The average excitation brightness of the focus area is obtained by calculating the preview image, exposure time, and sensitivity acquired by the preset camera. When the average excitation brightness is less than a first preset threshold, depth focusing is used for shooting; When the average excitation brightness is greater than or equal to the first preset threshold, the average value of the convolution result of the pixels in the focus area of ​​the preview image is calculated; When the average value is less than the second preset threshold, depth focusing is used for shooting; when the average value is greater than or equal to the second preset threshold, phase focusing is used for shooting.

[0005] Optionally, the calculation, which uses a preview image acquired by a preset camera, exposure time, and sensitivity to obtain the average excitation brightness of the focus area, includes the following steps: The excitation brightness is obtained by convolving the light intensity of any pixel in the preview image acquired by the camera with the photosensitive coefficient of the camera. The minimum brightness of the camera during phase focusing is obtained through a preset light box, and the average value of the pixels in the current image at the minimum brightness is calculated as the average excitation brightness.

[0006] Optionally, the calculation, which uses a preview image acquired by a preset camera, exposure time, and sensitivity to obtain the average excitation brightness of the focus area, includes the following steps: By capturing images of a pre-defined smooth, solid-color plane and performing convolution processing on the captured images of the plane; The average value of the convolutions of the captured images across the multiple planes is calculated as the average value of the convolution results.

[0007] Optionally, the calculation of the average excitation brightness of the focus area, obtained from the preview image acquired by the preset camera, the exposure time, and the sensitivity, includes: Obtain focus commands input by the user, or identify the current subject based on image features of the preview image; In the preview image, the area corresponding to the focus command or the subject being photographed is designated as the focus area.

[0008] Optionally, the step of using depth focusing for shooting when the average excitation brightness is less than a first preset threshold includes: When the average excitation brightness is less than a first preset threshold, the depth camera corresponding to depth focusing is invoked; The depth camera acquires the current depth information of the focus area and performs depth-focus shooting based on the depth information.

[0009] Optionally, when the average excitation brightness is greater than or equal to the first preset threshold, calculating the average convolution result of the pixels in the focus region of the preview image includes: The focus area is divided into multiple focus sub-regions based on the image features. When the proportion of the number of focusing sub-regions whose average excitation brightness is greater than or equal to the first preset threshold is greater than the first preset proportion, it is determined that the average excitation brightness of the focusing region is greater than or equal to the first preset threshold.

[0010] Optionally, the step of using depth focusing for shooting when the average value is less than a second preset threshold, and using phase focusing for shooting when the average value is greater than or equal to the second preset threshold, includes: When the proportion of the number of convolution results whose average value is less than the second preset threshold is greater than the second preset threshold in multiple focus sub-regions, it is determined that the average value is less than the second preset threshold. When the average value is less than the second preset threshold, depth focusing is used for shooting.

[0011] Optionally, the step of using depth focusing for shooting when the average value is less than a second preset threshold, and using phase focusing for shooting when the average value is greater than or equal to the second preset threshold, further includes: In multiple focus sub-regions, when the proportion of the number of convolution results whose average value is less than the second preset threshold is less than or equal to the second preset proportion, the average value is determined to be greater than or equal to the second preset threshold. When the average value is greater than or equal to the second preset threshold, phase focusing is used for shooting.

[0012] The present invention also proposes a combined focus shooting control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the combined focus shooting control method as described in any of the preceding claims.

[0013] The present invention also proposes a computer-readable storage medium storing a combined focus shooting control program, which, when executed by a processor, implements the steps of the combined focus shooting control method as described in any of the preceding claims.

[0014] The combined autofocus shooting control method, device, and computer-readable storage medium of the present invention calculate the average excitation brightness of the focus area by measuring the preview image, exposure time, and sensitivity acquired by a preset camera. When the average excitation brightness is less than a first preset threshold, depth focusing is used for shooting. When the average excitation brightness is greater than or equal to the first preset threshold, the average value of the convolution results of the pixels in the focus area of ​​the preview image is calculated. When the average value is less than a second preset threshold, depth focusing is used for shooting. When the average value is greater than or equal to the second preset threshold, phase focusing is used for shooting. This achieves a more user-friendly combined autofocus shooting control scheme, improving the rapid adaptability, focusing stability, and focusing accuracy of autofocus shooting in various scenarios, and enhancing the user's shooting experience. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal according to the present invention; Figure 2 This is a flowchart of the first step of the combined focusing and shooting control method of the present invention; Figure 3This is the second flowchart of the combined focusing and shooting control method of the present invention; Figure 4 This is the third flowchart of the combined focusing and shooting control method of the present invention; Figure 5 This is the fourth flowchart of the combined focusing and shooting control method of the present invention; Figure 6 This is the fifth flowchart of the combined focusing and shooting control method of the present invention; Figure 7 This is the sixth flowchart of the combined focusing and shooting control method of the present invention; Figure 8 This is the seventh flowchart of the combined focusing and shooting control method of the present invention; Figure 9 This is the eighth flowchart of the combined focusing and shooting control method of the present invention. Detailed Implementation

[0016] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0018] Terminals can be implemented in various forms. For example, the terminals described in this invention may include mobile terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0019] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from components specifically designed for mobile purposes, the construction according to embodiments of the present invention can also be applied to fixed-type terminals.

[0020] Please see Figure 1This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of the present invention. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0021] The following is combined Figure 1 A detailed introduction to each component of the mobile terminal: The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Furthermore, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), and TDD-LTE (Time Division Duplexing-Long Term Evolution).

[0022] WiFi is a short-range wireless transmission technology. Mobile terminals using the WiFi module 102 can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.

[0023] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.

[0024] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0025] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition-related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0026] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0027] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands from processor 110. In addition, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being limited here.

[0028] Furthermore, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0029] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.

[0030] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0031] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.

[0032] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0033] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.

[0034] Based on the above-described mobile terminal hardware structure, various embodiments of the method of the present invention are proposed.

[0035] Figure 2 This is a flowchart of the first embodiment of the combined focus shooting control method of the present invention. A combined focus shooting control method, the method comprising: S1. Calculate the preview image, exposure time, and sensitivity obtained from the preset camera to obtain the average excitation brightness of the focus area; S2. When the average excitation brightness is less than the first preset threshold, depth focusing is used for shooting; S3. When the average excitation brightness is greater than or equal to the first preset threshold, calculate the average value of the convolution results of the pixels in the focus area of ​​the preview image; S4. When the average value is less than the second preset threshold, use depth focusing to take a picture; when the average value is greater than or equal to the second preset threshold, use phase focusing to take a picture.

[0036] In this embodiment, phase detection autofocus and ToF autofocus are used as a complementary focusing method. Phase detection autofocus is used in most scenarios, while ToF autofocus is used when there is insufficient light or the target is a smooth, solid-color plane. To achieve this, a detection module is needed to detect the light source and the target, and switch the focusing method accordingly based on their states.

[0037] In this embodiment, the method for detecting light described above considers that the value of an image pixel is affected by three variables: ambient light, exposure time, and ISO, all of which are positively correlated. Therefore, this embodiment proposes a calculation scheme: the light intensity received by a pixel * camera sensitivity coefficient = pixel value / exposure time / ISO. Here, the camera sensitivity coefficient is a fixed coefficient influenced by factors such as camera aperture and sensor area, which determines the pixel value under the same lighting conditions, exposure time, and ISO.

[0038] In this embodiment, the above "light intensity * camera sensitivity coefficient" is denoted as excitation intensity.

[0039] In this embodiment, an environment with the lowest possible brightness that can be used for phase focusing can be created using an optical box, and then the average excitation brightness of the pixels in the current image can be measured.

[0040] In this embodiment, during actual operation, the average excitation brightness of the pixels in the focus area is calculated and compared with a threshold determined by the lowest brightness. Therefore, if the brightness falls below the threshold, Focusing Of (FOF) is used for focusing.

[0041] In this embodiment, the method for detecting planes with smooth, solid colors is to perform a convolution calculation on the image: -1 -1 -1 -1 8 -1 -1 -1 -1 As shown above, the convolution result in a completely smooth region is 0, meaning that the greater the image change, the larger the convolution result.

[0042] In this embodiment, the method for determining the threshold is to take a picture of a smooth, pure-color plane, then perform convolution processing on the image, and obtain the average convolution value of the image at this time as the threshold for whether the target is smooth enough.

[0043] In this embodiment, during actual operation, the average value of the convolution results of the pixels in the focus area is calculated and then compared with a measured threshold. Therefore, if the value is below the threshold, ToF (Time-of-Flight) focusing is used.

[0044] The beneficial effect of this embodiment is that, by calculating the average excitation brightness of the focus area using the preview image, exposure time, and sensitivity acquired by a preset camera, depth focusing is used for shooting when the average excitation brightness is less than a first preset threshold; when the average excitation brightness is greater than or equal to the first preset threshold, the average value of the convolution results of the pixels in the focus area of ​​the preview image is calculated; when the average value is less than a second preset threshold, depth focusing is used for shooting; and when the average value is greater than or equal to the second preset threshold, phase detection autofocus is used for shooting. This achieves a more user-friendly combined focus shooting control scheme, improving the rapid adaptability, focus stability, and focus accuracy of focus shooting in various scenarios, and enhancing the user's shooting experience.

[0045] Figure 3 This is the second flowchart of the combined focusing and shooting control method of the present invention. Based on the above embodiment, the step of calculating the average excitation brightness of the focusing area by using the preview image, exposure time, and sensitivity acquired by the preset camera includes: S01. The light intensity of any pixel in the preview image acquired by the camera is convolved with the photosensitive coefficient of the camera to obtain the excitation intensity. S02. Obtain the minimum brightness of the camera when performing phase focusing through a preset light box, and calculate the average value of the pixels of the current image at the minimum brightness as the average excitation brightness.

[0046] Figure 4 This is the third flowchart of the combined focus shooting control method of the present invention. Based on the above embodiments, the step of calculating the average excitation brightness of the focus area by using the preview image, exposure time, and sensitivity acquired by the preset camera includes: S03. By capturing a preset smooth, solid-color plane, and performing convolution processing on the captured image of the plane; S04. Calculate the average value of the convolution of the captured images of the multiple planes, and use it as the average value of the convolution result.

[0047] Figure 5 This is the fourth flowchart of the combined focusing and shooting control method of the present invention. Based on the above embodiments, the step of calculating the average excitation brightness of the focusing area by using the preview image, exposure time, and sensitivity acquired by the preset camera includes: S11. Obtain the focus command input by the user, or identify the current shooting subject based on the image features of the preview image; S12. In the preview image, the area corresponding to the focus command or the subject being photographed is taken as the focus area.

[0048] Figure 6 This is the fifth flowchart of the combined focus shooting control method of the present invention. Based on the above embodiments, the step of using depth focus for shooting when the average excitation brightness is less than a first preset threshold includes: S21. When the average excitation brightness is less than the first preset threshold, the depth camera corresponding to the depth focus is called. S22. Obtain the current depth information of the focus area through the depth camera, and perform depth focusing shooting based on the depth information.

[0049] Figure 7 This is the sixth flowchart of the combined focus shooting control method of the present invention. Based on the above embodiment, the step of calculating the average value of the convolution results of the pixels in the focus area of ​​the preview image when the average excitation brightness is greater than or equal to the first preset threshold includes: S31. Divide the focus area into multiple focus sub-regions according to the image features; S32. When the proportion of the number of focusing sub-regions whose average excitation brightness is greater than or equal to the first preset threshold is greater than the first preset proportion, it is determined that the average excitation brightness of the focusing region is greater than or equal to the first preset threshold.

[0050] Figure 8 This is the seventh flowchart of the combined focus shooting control method of the present invention. Based on the above embodiments, the step of using depth focusing for shooting when the average value is less than a second preset threshold, and using phase focusing for shooting when the average value is greater than or equal to the second preset threshold, includes: S41. When the proportion of the number of convolution results whose average value is less than the second preset threshold is greater than the second preset proportion in multiple focusing sub-regions, it is determined that the average value is less than the second preset threshold. S42. When the average value is less than the second preset threshold, use depth focusing to take a picture.

[0051] Figure 9 This is the eighth flowchart of the combined focus shooting control method of the present invention. Based on the above embodiments, the step of using depth focusing for shooting when the average value is less than a second preset threshold, and using phase focusing for shooting when the average value is greater than or equal to the second preset threshold, includes: S43. When the proportion of the number of convolution results whose average value is less than the second preset threshold is greater than the second preset threshold in multiple focusing sub-regions, it is determined that the average value is less than the second preset threshold. S44. When the average value is less than the second preset threshold, use depth focusing to take a picture.

[0052] Optionally, in this embodiment, if the average excitation brightness is less than the measured threshold, the focus area is reduced according to the image features.

[0053] Optionally, in this embodiment, the area with higher average excitation brightness is used as the reduced focus area.

[0054] Optionally, in this embodiment, when the average excitation brightness of the reduced focus area is greater than or equal to the measured threshold, phase focusing is still used for shooting.

[0055] Optionally, in this embodiment, when the average value of the convolution result is less than a measured threshold, the focus area is reduced according to the image features.

[0056] Optionally, in this embodiment, the region with a higher average value of the convolution result (i.e., a larger proportion of non-pure colors) is used as the reduced focus region.

[0057] Optionally, in this embodiment, when the average value of the convolution result of the reduced focus area is greater than or equal to the measured threshold, phase focusing is still used for shooting.

[0058] Based on the above embodiments, the present invention also proposes a combined focus shooting control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the combined focus shooting control method as described in any of the above embodiments.

[0059] It should be noted that the above-described device embodiments and method embodiments belong to the same concept. The specific implementation process can be found in the method embodiments, and the technical features in the method embodiments are also applicable to the device embodiments, which will not be repeated here.

[0060] Based on the above embodiments, the present invention also proposes a computer-readable storage medium storing a combined focus shooting control program, which, when executed by a processor, implements the steps of the combined focus shooting control method as described in any of the above claims.

[0061] It should be noted that the above-described medium embodiments and method embodiments belong to the same concept. The specific implementation process can be found in the method embodiments, and the technical features in the method embodiments are also applicable to the medium embodiments, which will not be repeated here.

[0062] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0063] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0064] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0065] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A combined focus shooting control method, characterized in that, The method includes: By creating an environment with the lowest possible brightness for phase-detection autofocus using a light box, the average excitation brightness of the pixels in the current image is measured by convolving the light intensity received by a pixel with the camera's photosensitive coefficient. By capturing images of a pre-defined smooth, solid-color plane and performing convolution processing on the captured images of the plane, the average convolution value of the captured images is obtained. The convolution result for completely smooth regions is 0, and the greater the image change, the larger the convolution result. In actual operation, the average excitation brightness of the pixels in the focus area is calculated; When the average excitation brightness of the pixels in the focus area is less than the measured average excitation brightness, depth focusing is used for shooting. When the average excitation brightness of the pixels in the focus area is greater than or equal to the measured average excitation brightness, calculate the average value of the convolution result of the pixels in the focus area during the actual operation. When the average value of the convolution result of the pixels in the focus area is less than the average convolution value of the captured image, depth focusing is used for shooting; when the average value of the convolution result of the pixels in the focus area is greater than or equal to the average convolution value of the captured image, phase focusing is used for shooting. in, It can obtain focus commands input by the user or identify the current subject based on image features of the preview image; In the preview image, the area corresponding to the focus command or the subject being photographed is designated as the focus area; When the average excitation brightness of the pixels in the focus area is less than the measured average excitation brightness, the depth camera corresponding to depth focus is activated. The depth camera acquires the current depth information of the focus area and performs depth-focus shooting based on the depth information. The focus area is divided into multiple focus sub-regions based on the image features. In a plurality of the focusing sub-regions, when the average excitation brightness of the pixels in the focusing region is greater than or equal to the measured average excitation brightness of the focusing sub-regions is greater than a first preset proportion, it is determined that the average excitation brightness of the pixels in the focusing region is greater than or equal to the measured average excitation brightness. If the proportion of the number of pixels in the focus sub-regions whose average convolution result is less than the average convolution value of the captured image is greater than a second preset proportion, then it is determined that the average convolution result of the pixels in the focus region is less than the average convolution value of the captured image. If the proportion of the number of pixels in the focus sub-regions whose average convolution result is less than the average convolution value of the captured image is less than or equal to the second preset proportion, then the average convolution result of the pixels in the focus region is determined to be greater than or equal to the average convolution value of the captured image.

2. A combined focusing and shooting control device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the combined focus shooting control method as described in claim 1.

3. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a combined focus shooting control program, which, when executed by a processor, implements the steps of the combined focus shooting control method as described in claim 1.

Images