CN116017138A

CN116017138A - Light measuring control display method, computer equipment and storage medium

Info

Publication number: CN116017138A
Application number: CN202310303949.8A
Authority: CN
Inventors: 周俊伟
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-04-25
Anticipated expiration: 2043-03-27
Also published as: CN116017138B

Abstract

The application discloses a light measurement control piece display method, computer equipment and a storage medium, and belongs to the technical field of terminals. The method comprises the following steps: and (3) performing gaze point tracking in the shooting process to obtain a gaze area in the shooting interface, and then automatically displaying a photometry control at the position of the gaze area, wherein the photometry control is used for indicating the photometry area in the preview image in the shooting interface. Under the condition, the light metering control is automatically displayed at the gazing position of the user, so that the light metering control is simply and flexibly displayed, the light metering area in the preview image can be close to the intention of the user without manual operation of the user, and the use of the user is facilitated. In addition, since the light metering area is automatically adjusted according to the intention of the user, the subsequent exposure treatment realized according to the light metering area can be more in line with the exposure tendency of the user.

Description

Light measuring control display method, computer equipment and storage medium

Technical Field

The application relates to the technical field of terminals, in particular to a display method of a light measurement control unit, computer equipment and a storage medium.

Background

With the rapid development of terminal technology, the functions of terminals such as mobile phones, tablet computers and the like are increasingly powerful, and the terminals become an indispensable tool in work and life of people. A camera is usually arranged in the terminal to realize a shooting function, and in order to improve the display effect of a shot image, the terminal often performs exposure processing on the shot image to improve the image quality.

In the related art, a preview image is displayed in a photographing interface, and a metering control and a focusing control are also displayed in a central position of the photographing interface. The user can separate the photometry control and the focusing control by long pressing the center position of the shooting interface, and after the photometry control and the focusing control are separated, the user can drag the photometry control to move. The terminal can determine a photometric value according to a photometric area indicated by the moved photometric control in the preview image, and then expose the preview image according to the photometric value.

However, the above method for adjusting the position of the photometric control is complicated, and requires the user to perform operations such as manually separating the control and manually moving the control, which is inconvenient for the user.

Disclosure of Invention

The application provides a light metering control display method, computer equipment and storage medium, which can automatically display a light metering control at the gazing position of a user, so that the display of the light metering control becomes simple and flexible and is close to the intention of the user, and the light metering control is convenient for the user to use. The technical scheme is as follows:

in a first aspect, a method for displaying a light measurement control is provided, the method being applied to a terminal. In the method, gaze point tracking is performed in the shooting process, a gaze area in a shooting interface is obtained, and then a photometric control is displayed at the position of the gaze area.

The preview image is displayed on the photographing interface. A metering control may also be displayed in the shooting interface, and optionally, a focusing control may also be displayed in the shooting interface.

The metering control piece is used for indicating a metering area in the preview image, and the metering control piece can move in the shooting interface. The metering region is a region in the preview image for determining the brightness of the photographed scene.

In the method, the light metering control can be automatically displayed at the gazing position of the user, so that the light metering control is displayed simply and flexibly, the light metering area in the preview image can be close to the intention of the user without manual operation of the user, and the use of the user is facilitated. In addition, since the light metering area is automatically adjusted according to the intention of the user, the subsequent exposure treatment realized according to the light metering area can be more in line with the exposure tendency of the user.

Alternatively, the operation of performing gaze point tracking during shooting may be: and if a starting instruction aiming at the camera application is detected, displaying a shooting interface and tracking the gaze point.

In the present application, gaze point tracking may be performed to determine the gaze location of the user upon starting shooting immediately after the start of the camera application. In this way, the photometry control in the camera interface can be automatically moved to the user's gaze location subsequently.

Optionally, the terminal has a front camera and a rear camera, and the operation of performing gaze point tracking in the shooting process may be: if the preview image is an image shot by the front-end camera, acquiring a face image contained in the image shot by the front-end camera; or if the preview image is the image shot by the rear camera, starting the front camera to acquire the face image contained in the image shot by the front camera. And performing gaze point tracking according to the face image.

When a user shoots by using the terminal, the user usually views the preview image in the shooting interface displayed by the terminal, so that the front camera of the terminal can acquire the face image of the user, and the gazing area of the user in the shooting interface can be rapidly and accurately known according to the face image.

In the present application, the operation of displaying the photometry control at the position of the gazing area may be: and if the position of the gazing area is unchanged for a preset time period, displaying the photometric control at the position of the gazing area.

If the position of the gazing area is unchanged for a preset duration, which indicates that the sight line of the user is stable, that is, the user is gazing at a certain object continuously, the terminal can display the photometry control at the position of the gazing area, so that the photometry area in the preview image is close to the intention of the user.

Optionally, if no target operation is detected after shooting is started, performing gaze point tracking during shooting, to obtain a gaze area in a shooting interface, and displaying a photometric control at a position of the gaze area, where the target operation is a user operation for moving the photometric control. If the target operation is detected in the shooting process, the photometry control is moved according to the target operation, and the step of tracking the gaze point in the shooting process is finished, so that the gaze area in the shooting interface is obtained, and the step of displaying the photometry control at the position of the gaze area is achieved. Therefore, the high priority of the user operation can be ensured, and the photometric area in the preview image is ensured to be closer to the intention of the user.

Alternatively, the photometric value of the preview image may be determined according to the photometric area indicated in the preview image by the photometric control, and then the preview image may be subjected to exposure processing according to the photometric value of the preview image.

In the present application, the photometric value of the preview image can be determined according to the photometric area, and the photometric value of the preview image can indicate the brightness of the scene in which the preview image is captured. In this way, the preview image can be subjected to exposure processing based on the photometric value of the preview image. The selection of the photometric area is close to the intention of the user, so that the exposure processing of the preview image can achieve the exposure effect which meets the intention of the user.

Alternatively, the operation of determining the photometric value of the preview image from the photometric area indicated in the preview image by the photometric control may be: acquiring a photometric value of a photometric area, and acquiring a photometric value of each target area in at least one target area in a preview image; and determining the photometric value of the preview image according to the photometric value of the photometric area and the photometric value of each target area in the at least one target area.

The target region is a region in the preview image having a reference value for determining the brightness of the photographed scene. For example, the at least one target region may include a preset region in the preview image and/or may include an object region of a target object present in the preview image.

The preset area may be a predefined area having a fixed position. The preset area may be an area that a technician preset according to photographing experience or photographing requirement needs to be heavy at all during exposure. The preset area is a scopy area, and the preset area comprises a plurality of pixel points in the preview image. For example, the preset area may be a central area of the preview image, where the preset area includes a pixel point at a central position of the preview image and other pixel points in a small range around the pixel point.

The target object may be predefined objects that require special attention when exposed. The target object may be preset by a technician according to photographing experience or photographing requirements. For example, the target object may be a human face, or the target object may be some objects with higher reflectivity, and of course, the target object may also be other objects, which is not limited in this embodiment of the present application. The object region of the target object is a scoped region, and the object region of the target object includes a plurality of pixel points in the preview image. In some embodiments, whether the target object exists in the preview image may be detected, and if the target object exists in the preview image, the target area of the target object existing in the preview image may be taken as the target area, so that the exposure process may be performed with reference to the photometric value of the target area of the target object later.

In the application, the photometric value of the preview image can be determined by combining the photometric value of the photometric area and the photometric value of the at least one target area, so that not only is the intention of a user referenced, but also the key image content of the preview image is referenced, the photometric value of the preview image determined in this way is more accurate, the exposure processing realized in the follow-up process is more accurate, and a better exposure effect can be achieved.

Alternatively, the operation of determining the photometric value of the preview image according to the photometric value of the photometric area and the photometric value of each of the at least one target area may be: and carrying out weighted average on the photometric value of the photometric area and the photometric value of each target area in the at least one target area to obtain the photometric value of the preview image.

The weight of the photometric area and the weight of each target area may be set in advance, for example, may be set in advance by a technician according to shooting requirements or shooting experience. The weights of the target areas may be different when they are different. For example, the weight of the preset region may be different from the weight of the object region of the target object. Moreover, the weights of the preset areas at different positions can be different, and the weights of the object areas of different types of target objects can be different. In this way, the photometric value of the preview image obtained by weighted average of the photometric value of the photometric area and the photometric value of each target area in the at least one target area more meets the shooting requirement.

Optionally, if a start instruction for the camera application is detected, displaying a shooting interface and displaying a photometry control and a focusing control at a center position of the shooting interface. In this case, the operation of displaying the photometry control at the position of the gazing area may be: and separating the photometry control and the focusing control, and moving the separated photometry control to the position of the gazing area.

In the application, after determining the gazing position of the user, the light metering control piece and the focusing control piece can be automatically separated, and the light metering control piece is automatically moved to the gazing position of the user. Therefore, the inconvenience that a user needs to touch and separate the photometry control and the focusing control is avoided, the usability of the separation function of the photometry control and the focusing control is improved, and the inconvenience that the user needs to touch and adjust the position of the photometry control is avoided, so that the user can obtain better shooting experience.

In a second aspect, a light measurement control display device is provided, where the light measurement control display device has a function of implementing the behavior of the light measurement control display method in the first aspect. The light measurement control display device comprises at least one module, and the at least one module is used for realizing the light measurement control display method provided by the first aspect.

In a third aspect, a light measurement control display device is provided, where the light measurement control display device includes a processor and a memory, where the memory is configured to store a program for supporting the light measurement control display device to execute the light measurement control display method provided in the first aspect, and store data related to implementing the light measurement control display method described in the first aspect. The processor is configured to execute a program stored in the memory. The photometry control display device may further comprise a communication bus for establishing a connection between the processor and the memory.

In a fourth aspect, there is provided a computer readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the light measurement control display method of the first aspect described above.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the light measurement control display method of the first aspect described above.

The technical effects obtained by the second, third, fourth and fifth aspects are similar to the technical effects obtained by the corresponding technical means in the first aspect, and are not described in detail herein.

Drawings

Fig. 1 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 2 is a block diagram of a software system of a terminal provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a first photographing interface provided in an embodiment of the present application;

FIG. 4 is a flowchart of a method for displaying a light measurement control according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a second photographing interface according to an embodiment of the present application;

fig. 6 is a schematic diagram of a third photographing interface provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of a process for determining a photometric value of a preview image provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of a display method of a light measurement control device according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a light measurement control device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

It should be understood that reference herein to "a plurality" means two or more. In the description of the present application, "/" means or, unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, for the purpose of facilitating the clear description of the technical solutions of the present application, the words "first", "second", etc. are used to distinguish between the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

The statements of "one embodiment" or "some embodiments" and the like, described in this application, mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in various places throughout this application are not necessarily all referring to the same embodiment, but mean "one or more, but not all, embodiments" unless expressly specified otherwise. Furthermore, the terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically noted.

The terminal according to the embodiment of the present application will be described below.

Fig. 1 is a schematic structural diagram of a terminal according to an embodiment of the present application. Referring to fig. 1, the terminal 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display 194, a subscriber identity module (subscriberidentification module, SIM) card interface 195, and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It should be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the terminal 100. In other embodiments of the present application, terminal 100 may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphicsprocessing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digitalsignal processor, DSP), a baseband processor, and/or a neural network processor (neural-networkprocessing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

The controller may be a neural hub and a command center of the terminal 100, among others. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In some embodiments, the processor 110 may include one or more interfaces, such as may include an inter-integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universalasynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, a SIM interface, and/or a USB interface, among others.

The I2C interface is a bi-directional synchronous serial bus comprising a serial data line (SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may contain multiple sets of I2C interfaces. The processor 110 may be coupled to the touch sensor 180K, charger, flash, camera 193, etc., respectively, through different I2C interfaces. Such as: the processor 110 may be coupled to the touch sensor 180K through an I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C interface to implement a touch function of the terminal 100.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S interfaces. The processor 110 may be coupled to the audio module 170 through an I2S interface to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may also be used for audio communication to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface to implement a function of answering a call through the bluetooth headset.

The UART interface is a universal serial data bus for asynchronous communications. The UART interface may be a bi-directional communication bus. The UART interface may convert data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. Such as: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

The MIPI interface may be used to connect the processor 110 to peripheral devices such as a display 194, a camera 193, and the like. The MIPI interfaces include camera serial interfaces (camera serialinterface, CSI), display serial interfaces (display serialinterface, DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the photographing function of terminal 100. The processor 110 and the display 194 communicate through a DSI interface to implement the display function of the terminal 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal or as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, an MIPI interface, etc.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the terminal 100, or may be used to transfer data between the terminal 100 and a peripheral device. And can also be used for connecting with a headset, and playing audio through the headset. The USB interface 130 may also be used to connect other terminals, such as AR devices, etc.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present application is only illustrative, and does not limit the structure of the terminal 100. In other embodiments of the present application, the terminal 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

The charge management module 140 is configured to receive a charge input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charge management module 140 may receive a charging input of a wired charger through the USB interface 130. In some wireless charging embodiments, the charge management module 140 may receive wireless charging input through a wireless charging coil of the terminal 100. The charging management module 140 may also supply power to the terminal 100 through the power management module 141 while charging the battery 142.

The power management module 141 is used for connecting the battery 142, and the charge management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 to power the processor 110, the internal memory 121, the external memory, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be configured to monitor battery capacity, battery cycle number, battery health (leakage, impedance) and other parameters. In other embodiments, the power management module 141 may also be provided in the processor 110. In other embodiments, the power management module 141 and the charge management module 140 may be disposed in the same device.

The wireless communication function of the terminal 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in terminal 100 may be configured to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. Such as: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied to the terminal 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (lownoise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local areanetworks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigationsatellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near fieldcommunication, NFC), infrared technology (IR), etc., applied on the terminal 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, antenna 1 and mobile communication module 150 of terminal 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that terminal 100 may communicate with a network and other devices via wireless communication techniques. Wireless communication techniques may include global system for mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radioservice, GPRS), code division multiple access (code division multipleaccess, CDMA), wideband code division multiple access (wideband code divisionmultiple access, WCDMA), time division code division multiple access (time-division codedivision multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioningsystem, GPS), a global navigation satellite system (global navigationsatellite system, GLONASS), a beidou satellite navigation system (beidou navigationsatellite system, BDS), a quasi zenith satellite system (quasi-zenith satellitesystem, QZSS) and/or a satellite based augmentation system (satellite basedaugmentation systems, SBAS).

Terminal 100 implements display functions via a GPU, display 194, and application processor, etc. The GPU is a microprocessor for image processing, and is connected to the display 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos, and the like. The display 194 includes a display panel. The display panel may employ a liquid crystal display (liquidcrystal display, LCD), an organic light-emitting diode (OLED), an active-matrixorganic light emitting diode (AMOLED), a flexible light-emitting diode (flex), a mini, a Micro-OLED, a quantum dot light-emitting diode (quantum dot lightemitting diodes, QLED), or the like. In some embodiments, the terminal 100 may include 1 or N display screens 194, N being an integer greater than 1.

The terminal 100 may implement photographing functions through an ISP, a camera 193, a video codec, a GPU, a display 194, an application processor, and the like.

The ISP is used to process data fed back by the camera 193. For example, when photographing, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the light signal is converted into an electric signal, and the camera photosensitive element transmits the electric signal to the ISP for processing and is converted into an image visible to naked eyes. ISP can also optimize the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in the camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a Complementary Metal Oxide Semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, which is then transferred to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV, or the like format. In some embodiments, terminal 100 may include 1 or N cameras 193, N being an integer greater than 1.

The digital signal processor is used for processing digital signals, and can process other digital signals besides digital image signals. For example, when the terminal 100 selects a frequency bin, the digital signal processor is used to fourier transform the frequency bin energy, etc.

Video codecs are used to compress or decompress digital video. The terminal 100 may support one or more video codecs. In this way, the terminal 100 may play or record video in a plurality of encoding formats, such as: dynamic picture experts group (movingpicture experts group, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

The NPU is a neural-network (NN) computing processor, and can rapidly process input information by referencing a biological neural network structure, such as referencing a transmission mode between human brain neurons, and can also continuously perform self-learning. Applications such as intelligent cognition of the terminal 100 can be realized through the NPU, for example: image recognition, face recognition, speech recognition, text understanding, etc.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to realize the memory capability of the extension terminal 100. The external memory card communicates with the processor 110 through an external memory interface 120 to implement data storage functions. Such as storing files of music, video, etc. in an external memory card.

The internal memory 121 may be used to store computer-executable program code that includes instructions. The processor 110 performs various functional applications of the terminal 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a storage program area and a storage data area. The storage program area may store an application program (such as a sound playing function, an image playing function, etc.) required for at least one function of the operating system, etc. The storage data area may store data (e.g., audio data, phonebook, etc.) created by the terminal 100 during use, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and the like.

The terminal 100 may implement audio functions such as music playing, recording, etc. through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, an application processor, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or a portion of the functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also referred to as a "horn," is used to convert audio electrical signals into sound signals. The terminal 100 can listen to music or to handsfree calls through the speaker 170A.

A receiver 170B, also referred to as a "earpiece", is used to convert the audio electrical signal into a sound signal. When the terminal 100 receives a telephone call or voice message, it is possible to receive voice by approaching the receiver 170B to the human ear.

Microphone 170C, also referred to as a "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can sound near the microphone 170C through the mouth, inputting a sound signal to the microphone 170C. The terminal 100 may be provided with at least one microphone 170C. In other embodiments, the terminal 100 may be provided with two microphones 170C, and may implement a noise reduction function in addition to collecting sound signals. In other embodiments, the terminal 100 may be further provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify the source of sound, implement directional recording functions, etc.

The earphone interface 170D is used to connect a wired earphone. The earphone interface 170D may be a USB interface 130 or a 3.5mm open mobile terminal platform (open mobile terminalplatform, OMTP) standard interface, a american cellular telecommunications industry association (cellulartelecommunications industry association of the USA, CTIA) standard interface.

The pressure sensor 180A is used to sense a pressure signal, and may convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A is of various types, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a capacitive pressure sensor comprising at least two parallel plates with conductive material. The capacitance between the electrodes changes when a force is applied to the pressure sensor 180A. The terminal 100 determines the strength of the pressure according to the change of the capacitance. When a touch operation is applied to the display 194, the terminal 100 detects the intensity of the touch operation according to the pressure sensor 180A. The terminal 100 may also calculate the location of the touch based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch location, but at different touch operation strengths, may correspond to different operation instructions. Such as: when a touch operation with the touch operation intensity smaller than the pressure threshold is applied to the short message application icon, executing an instruction for checking the short message. And executing the instruction of newly creating the short message when the touch operation with the touch operation intensity being larger than or equal to the pressure threshold acts on the short message application icon.

The gyro sensor 180B may be used to determine a motion gesture of the terminal 100. In some embodiments, the angular velocity of terminal 100 about three axes (i.e., x, y, and z axes) may be determined by gyro sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyro sensor 180B detects the angle of the shake of the terminal 100, calculates the distance to be compensated by the lens module according to the angle, and allows the lens to counteract the shake of the terminal 100 by the reverse motion, thereby realizing anti-shake. The gyro sensor 180B may also be used for navigating, somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the terminal 100 calculates altitude from barometric pressure values measured by the barometric pressure sensor 180C, aiding in positioning and navigation.

The magnetic sensor 180D includes a hall sensor. The terminal 100 may detect the opening and closing of the flip cover using the magnetic sensor 180D. In some embodiments, when the terminal 100 is a folder, the terminal 100 may detect opening and closing of the folder according to the magnetic sensor 180D. The terminal 100 sets the characteristics of automatic unlocking of the folder according to the detected opening and closing state of the leather sheath or the detected opening and closing state of the folder.

The acceleration sensor 180E may detect the magnitude of acceleration of the terminal 100 in various directions (typically three axes). The magnitude and direction of gravity may be detected when the terminal 100 is stationary. The acceleration sensor 180E may also be used to identify the gesture of the terminal 100, and may be applied to a landscape screen switch, a pedometer, and the like.

A distance sensor 180F for measuring a distance. The terminal 100 may measure the distance by infrared or laser. In some embodiments, in a photographed scene, the terminal 100 may range using the distance sensor 180F to achieve quick focusing.

The proximity light sensor 180G may include a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal 100 emits infrared light outward through the light emitting diode. The terminal 100 detects infrared reflected light from nearby objects using a photodiode. When sufficient reflected light is detected, the terminal 100 may determine that there is an object in the vicinity of the terminal 100. When insufficient reflected light is detected, it can be determined that there is no object near the terminal 100. The terminal 100 can detect that the user holds the terminal 100 close to the ear by using the proximity light sensor 180G, so as to automatically extinguish the screen for the purpose of saving power. The proximity light sensor 180G may also be used in holster mode, pocket mode to automatically unlock and lock the screen.

The ambient light sensor 180L is used to sense ambient light level. The terminal 100 may adaptively adjust the brightness of the display 194 according to the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust white balance when taking a photograph. The ambient light sensor 180L may also cooperate with the proximity light sensor 180G to detect whether the terminal 100 is in a pocket to prevent false touches.

The fingerprint sensor 180H is used to collect a fingerprint. The terminal 100 can utilize the collected fingerprint characteristics to realize fingerprint unlocking, access an application lock, fingerprint photographing, fingerprint incoming call answering and the like.

The temperature sensor 180J is for detecting temperature. In some embodiments, terminal 100 performs a temperature processing strategy using the temperature detected by temperature sensor 180J. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the terminal 100 performs a reduction in performance of a processor located near the temperature sensor 180J in order to reduce power consumption for implementing thermal protection. In other embodiments, when the temperature is below another threshold, the terminal 100 heats the battery 142 to avoid the terminal 100 from being abnormally shut down due to low temperatures. In other embodiments, when the temperature is below a further threshold, terminal 100 performs boosting of the output voltage of battery 142 to avoid abnormal shutdown caused by low temperatures.

The touch sensor 180K, also referred to as a "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is for detecting a touch operation acting thereon or thereabout. The touch sensor 180K may communicate the detected touch operation to the application processor to determine the touch event type. Visual output related to touch operations may be provided through the display 194. In other embodiments, the touch sensor 180K may be disposed on the surface of the terminal 100 at a different location than the display 194.

The bone conduction sensor 180M may acquire a vibration signal. In some embodiments, bone conduction sensor 180M may acquire a vibration signal of a human vocal tract vibrating bone pieces. The bone conduction sensor 180M may also contact the pulse of the human body to receive the blood pressure pulsation signal. In some embodiments, bone conduction sensor 180M may also be provided in a headset, in combination with an osteoinductive headset. The audio module 170 may parse out a voice signal based on the vibration signal of the vocal part vibration bone piece obtained by the bone conduction sensor 180M, and implement a voice function. The application processor can analyze heart rate information based on the blood pressure beat signals acquired by the bone conduction sensor 180M, so that a heart rate detection function is realized.

The keys 190 include a power-on key, a volume key, etc. The keys 190 may be mechanical keys or touch keys. The terminal 100 may receive key inputs, generating key signal inputs related to user settings and function controls of the terminal 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration alerting as well as for touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. Touch operations applied to different areas of the display screen 194 may also correspond to different vibration feedback effects. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The indicator 192 may be an indicator light, may be used to indicate a state of charge, a change in charge, a message indicating a missed call, a notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card may be contacted and separated from the terminal 100 by being inserted into the SIM card interface 195 or by being withdrawn from the SIM card interface 195. The terminal 100 may support 1 or N SIM card interfaces, N being an integer greater than 1. The SIM card interface 195 may support Nano SIM cards, micro SIM cards, and the like. The same SIM card interface 195 may be used to insert multiple cards simultaneously. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The terminal 100 interacts with the network through the SIM card to realize functions such as call and data communication. In some embodiments, the terminal 100 employs esims, i.e.: an embedded SIM card. The eSIM card may be embedded in the terminal 100 and cannot be separated from the terminal 100.

The software system of the terminal 100 will be described next.

The software system of the terminal 100 may employ a layered architecture, an event driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. In this embodiment, a software system of the terminal 100 is exemplarily described by taking an Android (Android) system with a hierarchical architecture as an example.

Fig. 2 is a block diagram of a software system of the terminal 100 according to an embodiment of the present application. Referring to fig. 2, the hierarchical architecture divides the software into several layers, each with distinct roles and branches. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into an application layer, an application framework layer, an Zhuoyun row (Android run) and system layers, and a kernel layer from top to bottom.

The application layer may include a series of application packages. As shown in fig. 2, the application package may include applications for cameras, gallery, calendar, phone calls, maps, navigation, WLAN, bluetooth, music, video, short messages, etc.

The application framework layer provides an application programming interface (applicationprogramming interface, API) and programming framework for application programs of the application layer. The application framework layer includes a number of predefined functions. As shown in FIG. 2, the application framework layer may include a window manager, a content provider, a view system, a telephony manager, a resource manager, a notification manager, and the like. The window manager is used for managing window programs. The window manager can acquire the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like. The content provider is used to store and retrieve data, which may include video, images, audio, calls made and received, browsing history and bookmarks, phonebooks, etc., and make such data accessible to the application. The view system includes visual controls, such as controls to display text, controls to display pictures, and the like. The view system may be used to construct a display interface for an application, which may be comprised of one or more views, such as a view that includes displaying a text notification icon, a view that includes displaying text, and a view that includes displaying a picture. The telephony manager is used to provide communication functions of the terminal 100, such as management of call status (including on, off, etc.). The resource manager provides various resources for the application program, such as localization strings, icons, pictures, layout files, video files, and the like. The notification manager allows the application to display notification information in a status bar, can be used to communicate notification type messages, can automatically disappear after a short dwell, and does not require user interaction. For example, a notification manager is used to inform that the download is complete, a message alert, etc. The notification manager may also be a notification that appears in the system top status bar in the form of a chart or a scroll bar text, such as a notification of a background running application. The notification manager may also be a notification that appears on the screen in the form of a dialog window, such as a text message being prompted in a status bar, a notification sound being emitted, the electronic device vibrating, a flashing indicator light, etc.

Android run time includes a core library and virtual machines. Android run is responsible for scheduling and management of the Android system. The core library consists of two parts: one part is a function which needs to be called by java language, and the other part is a core library of android. The application layer and the application framework layer run in a virtual machine. The virtual machine executes java files of the application program layer and the application program framework layer as binary files. The virtual machine is used for executing the functions of object life cycle management, stack management, thread management, security and exception management, garbage collection and the like.

The system layer may include a plurality of functional modules such as: surface manager (surfacemanager), media library (MediaLibraries), three-dimensional graphics processing library (e.g., openGL ES), two-dimensional graphics engine (e.g., SGL), etc. The surface manager is used to manage the display subsystem and provides a fusion of two-dimensional and three-dimensional layers for multiple applications. Media libraries support a variety of commonly used audio, video format playback and recording, still image files, and the like. The media library may support a variety of audio and video encoding formats, such as: MPEG4, h.264, MP3, AAC, AMR, JPG, PNG, etc. The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like. A two-dimensional graphics engine is a drawing engine that draws two-dimensional drawings.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises display drive, camera drive, audio drive, sensor drive and the like.

The workflow of the terminal 100 software and hardware is illustrated below in connection with capturing a photo scene.

When touch sensor 180K receives a touch operation, a corresponding hardware interrupt is issued to the kernel layer. The kernel layer processes the touch operation into the original input event (including information such as touch coordinates, time stamp of touch operation, etc.). The original input event is stored at the kernel layer. The application framework layer acquires an original input event from the kernel layer, and identifies a control corresponding to the original input event. Taking the touch operation as a click operation, the control corresponding to the click operation is a control of a camera application icon as an example, the camera application calls an interface of an application program framework layer, starts the camera application, calls a kernel layer to start a camera driver, and captures a still image or video through a camera 193.

The application scenario related to the embodiment of the present application is described below.

When the terminal exposes the shot image, the shot image needs to be subjected to photometry to obtain a photometry value, and the photometry value is used for indicating the brightness of the shot scene. The terminal may perform an exposure process on the photographed image according to the photometric value, and the terminal may determine an exposure value according to the photometric value and then perform an exposure process on the photographed image using the exposure value, for example.

In the related art, a terminal performs photometry in three ways. The first way is central heavy spot photometry: the entire photographed image is subjected to photometry, but the maximum specific gravity is assigned to the central area. The second way is matrix photometry: the wide area of the shot image is subjected to photometry, the brightness of each part is integrated, and the focusing area is weighted with emphasis. The third way is spot photometry: and carrying out photometry on a small area around a photometry point in the shot image, wherein the photometry point is displayed in a shooting interface, and a user can adjust the position of the photometry point.

Among the three modes, the former two modes are to directly measure light according to a specific algorithm, and the intention of a user is not referred, so that the exposure effect meeting the intention of the user cannot be achieved. In the latter mode, in order to realize the adjustment of the position of the photometric point and the position of the focusing point by the user, a photometric control and a focusing control are displayed in a shooting interface of the terminal, wherein the central point of the photometric control is the photometric point, and the central point of the focusing control is the focusing point. As shown in fig. 3 (a), after the terminal opens the photographing interface 301, the light measurement control 3011 and the focus control 3012 are both located at the center position of the photographing interface 301, and the user can separate the light measurement control 3011 and the focus control 3012 by pressing the center position of the photographing interface 301 for a long time. After the light measurement control 3011 and the focusing control 3012 are separated, as shown in fig. 3 (b), the user manually drags the light measurement control 3011 to adjust the position of the light measurement point, and of course, the user may manually drag the focusing control 3012 to adjust the position of the focusing point. However, in this way, the user is required to perform operations such as manual separation control and manual dragging control, which brings inconvenience to the user.

Therefore, the embodiment of the application provides a display method of a metering control, which can track a gaze point in a shooting process to obtain a gaze area in a shooting interface, and then can automatically display a metering control at the position of the gaze area, wherein the metering control is used for indicating the metering area in a preview image in the shooting interface. Under the condition, the light metering control is automatically displayed at the gazing position of the user, so that the light metering control is simply and flexibly displayed, the light metering area in the preview image can be close to the intention of the user without manual operation of the user, and the use of the user is facilitated. In addition, since the light metering area is automatically adjusted according to the intention of the user, the subsequent exposure treatment realized according to the light metering area can be more in line with the exposure tendency of the user.

The display method of the photometry controller provided in the embodiment of the present application is explained in detail below.

Fig. 4 is a flowchart of a light measurement control display method according to an embodiment of the present application. Referring to fig. 4, the method includes the steps of:

step 401: and the terminal performs gaze point tracking in the shooting process to obtain a gaze area in a shooting interface.

The photographing interface is an interface for photographing an image, and a preview image is displayed in the photographing interface. Optionally, a light measurement control unit and a focusing control unit can be further displayed in the shooting interface.

The metering control is used for indicating a metering area in the preview image, and the center point of the metering control can be called a metering point. The focus control is used to indicate a focus area in the preview image, and a center point of the focus control may be referred to as a focus point. Both the photometry control and the focusing control can move in the shooting interface. Optionally, both the photometry control and the focusing control may be moved by the user, for example, the user may manually drag the photometry control in the photographing interface to adjust the position of the photometry point, and of course, the user may manually drag the focusing control in the photographing interface to adjust the position of the focusing point.

Gaze point tracking may also be referred to as eye movement tracking. Since the external information acquired by the human is mainly visual information perceived by eyes, the eye movement of the human can intuitively reflect the gaze point and gaze time of the human. Gaze point tracking is a process of acquiring a line of sight direction by utilizing eyeball movement information of a person so as to automatically realize gaze point positioning.

And the terminal performs gaze point tracking in the shooting process, so that the gaze position of the user in the shooting process can be obtained, and the gaze position is the gaze area in the shooting interface. The gazing area is an area where the user is focused on the preview image in the photographing interface during photographing.

Optionally, if the terminal detects a start instruction for the camera application, the terminal displays a shooting interface and performs gaze point tracking.

The start instruction is used for indicating to start the camera application. The initiation instruction may be triggered by a user. For example, the user may trigger a start instruction for the camera application through a click operation, a slide operation, a voice operation, a gesture operation, a somatosensory operation, or the like. After the terminal detects the starting instruction, the camera application can be started to start shooting. The terminal can display a shooting interface after the camera application is started, and can track the gaze point after the camera application is started so as to determine the gaze area of the user in the shooting interface.

It should be noted that, when shooting is started immediately after the camera application is started, the terminal may display the shooting interface, and may also display both the light measurement control and the focusing control at the center position of the shooting interface, or may display both the light measurement control and the focusing control at the preset position in the shooting interface, or may display the light measurement control at one preset position in the shooting interface and display the focusing control at another preset position in the shooting interface. When the terminal starts shooting immediately after the camera application is started, and when the photometry control and the focusing control are displayed at the same position in the shooting interface, the photometry control and the focusing control are fixedly combined together for display in order to avoid misoperation of a user, and in the case, if the photometry control or the focusing control needs to be moved independently, the photometry control or the focusing control needs to be separated and then can be moved.

Another point to be noted is that the position of the photometry control at the beginning of shooting just after the start of the camera application may be referred to as an initial position, which may be the center position or the preset position described above. When shooting is started immediately after the camera application is started, the terminal can track the gaze point so as to determine the gaze position of the user. In this way, the subsequent terminal can automatically move the photometry control in the photographing interface from the initial position to the user's gaze position.

For example, taking a terminal as a mobile phone, as shown in fig. 5 (a), when a user needs to use the mobile phone to capture an image, the user operates (e.g. clicks) an icon 501 of a camera application in a main interface of the mobile phone to trigger a start instruction for the camera application. In response to the start instruction, the mobile phone starts a camera application, displays a photographing interface 502 as shown in fig. 5 (b), and performs gaze point tracking. When the mobile phone just starts to display the shooting interface 502, the photometry controller 5021 and the focusing control 5022 can be displayed at the center position of the shooting interface 502.

In some embodiments, the operation of the terminal for gaze point tracking during shooting may be: and the terminal acquires a user face image in the shooting process, and performs gaze point tracking according to the user face image. For example, if the terminal detects a start instruction for the camera application, a plurality of user face images may be continuously collected, and gaze point tracking may be performed according to the collected plurality of user face images.

If the user uses the front camera, the terminal is started to shoot by the front camera, and the preview image displayed by the terminal in the shooting interface is the image shot by the front camera. Under the condition, the terminal can acquire the face image of the user through the front-facing camera while using the front-facing camera to perform normal shooting, and can specifically acquire the face image contained in the image shot by the front-facing camera as the face image of the user.

If the user uses the rear camera, the preview image displayed by the terminal in the shooting interface is the image shot by the rear camera. In this case, in order to collect the face image of the user, the terminal needs to start the front camera, but the image shot by the front camera does not need to be displayed on the shooting interface, and the front camera is started only to collect the face image of the user. Therefore, when the terminal uses the rear camera to perform normal shooting, the front camera can also be used for collecting face images of the user, and the face images contained in the images shot by the front camera can be particularly obtained to serve as the face images of the user.

When a user shoots by using the terminal, the user usually views the preview image in the shooting interface displayed by the terminal, so that the front camera of the terminal can acquire the face image of the user, and the gazing area of the user in the shooting interface can be rapidly and accurately known according to the face image of the user.

The terminal can carry out gaze point tracking according to the face image of the user in various ways. In one mode, the terminal can obtain the user sight feature parameter by analyzing the user face image, and the gaze point estimation is performed according to the user sight feature parameter to obtain the falling point position (namely the gaze position of the user) of the user sight on the terminal screen, so that the gaze area in the shooting interface is obtained. Of course, the terminal may also perform gaze point tracking by other manners according to the face image of the user, which is not limited in the embodiment of the present application.

Step 402: the terminal displays the photometry control at the position of the gazing area.

In the embodiment of the application, the terminal can display the photometry control at the position of the gazing area, namely, the terminal can automatically display the photometry control at the gazing position of the user, so that the display of the photometry control becomes simple and flexible, the user does not need to manually operate, the photometry area in the preview image is close to the intention of the user, and the use of the user is facilitated. In addition, since the light metering area is automatically adjusted according to the intention of the user, the subsequent exposure treatment realized according to the light metering area can be more in line with the exposure tendency of the user.

In some embodiments, the terminal displays the light measurement control in an initial position (i.e., the center position or preset position described above) in the capture interface at the beginning of capturing just after the camera application is started. In this case, after determining the gazing area in the photographing interface, the terminal may automatically move the photometry control from the initial position to the position of the gazing area.

In some embodiments, the terminal displays the photometric control and the focusing control in the same position in the shooting interface when shooting is started immediately after the camera application is started. Under the condition, after the fixation area in the shooting interface is determined, the terminal can automatically separate the photometry control and the focusing control, and then the separated photometry control is moved to the position of the fixation area from the initial position. In this way, the terminal automatically separates the light measurement control and the focusing control after determining the gazing position of the user, and automatically moves the light measurement control to the gazing position of the user. Therefore, the inconvenience that a user needs to touch and separate the photometry control and the focusing control is avoided, the usability of the separation function of the photometry control and the focusing control is improved, and the inconvenience that the user needs to touch and adjust the position of the photometry control is avoided, so that the user can obtain better shooting experience.

For example, taking a terminal as a mobile phone, after the mobile phone starts a camera application, a shooting interface 502 shown in fig. 5 (b) is displayed, and the mobile phone performs gaze point tracking. When the cell phone displays the photographing interface 502, the metering control 5021 and the focusing control 5022 may be displayed at the center position of the photographing interface 502. Assume that a house and a moon are contained in the preview image in the photographing interface 502.

As an example, when the user looks at the door of the house in the preview image during shooting with the mobile phone, after the mobile phone performs gaze point tracking, it may determine that the gazing area in the shooting interface 502 is the door area of the house in the preview image, and then, as shown in (c) of fig. 5, the mobile phone may automatically separate the light measurement control 5021 and the focusing control 5022, and then automatically move the separated light measurement control 5021 from the center position to the door area of the house in the preview image for display. In this case, after the user starts the camera application in the cellular phone, both the metering control 5021 and the focus control 5022 in the photographing interface 502 are displayed at the center position. With the user's gaze on the door of the house in the preview image in the photographing interface 502, the photometry control 5021 in the photographing interface 502 automatically moves to the door region of the house in the preview image, so that the photographing experience of the user can be improved.

As another example, when the user looks at the door of the house in the preview image during shooting with the mobile phone, after the mobile phone performs gaze point tracking, it may determine that the gazing area in the shooting interface 502 is a moon area in the preview image, and then, as shown in (d) of fig. 5, the mobile phone may automatically separate the light measurement control 5021 and the focusing control 5022, and then automatically move the separated light measurement control 5021 from the center position to the moon area in the preview image for display. In this case, after the user starts the camera application in the cellular phone, both the metering control 5021 and the focus control 5022 in the photographing interface 502 are displayed at the center position. With the user's gaze on the moon in the preview image in the photographing interface 502, the photometry control 5021 in the photographing interface 502 automatically moves to the moon area in the preview image, so that the photographing experience of the user can be improved.

It can be appreciated that in the embodiment of the present application, the terminal may not determine the gazing area in the photographing interface in step 401, for example, the terminal does not collect the face image of the user, and thus cannot determine the gazing area in the photographing interface. In this case, when the terminal starts shooting immediately after the camera application is started, after the photometric control and the focusing control are displayed at the same position in the shooting interface, the terminal will not automatically separate and move both, but need to separate and move both according to the user operation. For example, if the terminal has not determined the gazing area after displaying the shooting interface, the terminal does not automatically separate the photometry control and the focusing control in the shooting interface and does not automatically move both. In the shooting process, if the terminal detects a separation operation triggered by a user in the shooting interface, the terminal can separate the photometry control and the focusing control in response to the separation operation, and then, if the terminal detects a movement operation triggered by the user in the shooting interface, the terminal can move the photometry control in response to the movement operation.

It should be noted that the gaze point position of the user may be continuously changed, and thus the position of the gaze area in the shooting interface determined by the terminal in step 401 may also be continuously changed. In this case, if the position of the gazing area changes within the preset time period, which indicates that the line of sight of the user is not stable, i.e. the user is not continuously gazing at a certain object, the terminal does not execute step 402, i.e. the photometry control is not displayed at the position of the gazing area. Until the terminal determines that the position of the gazing area is unchanged for a preset duration, which indicates that the line of sight of the user is stable, i.e. the user is continuously gazing at a certain object, the terminal may execute step 402, i.e. a light metering control may be displayed at the position of the gazing area, so that the light metering area in the preview image is close to the intention of the user.

Another point to be described is that if the position of the gazing area always changes within a preset period of time, that is, the line of sight of the user is always unstable, when the terminal starts shooting immediately after the camera application is started, after the photometric control and the focusing control are displayed at the same position in the shooting interface, the photometric control and the focusing control will not be automatically separated and will not be automatically moved, but the photometric control and the focusing control need to be separated and moved according to the user operation. For example, after the terminal displays the shooting interface, although the terminal determines the gazing area, the position of the gazing area always changes in a short time, and the terminal does not automatically separate the photometry control and the focusing control in the shooting interface and also does not automatically move. In the shooting process, if the terminal detects a separation operation triggered by a user in the shooting interface, the terminal can separate the photometry control and the focusing control in response to the separation operation, and then, if the terminal detects a movement operation triggered by the user in the shooting interface, the terminal can move the photometry control in response to the movement operation.

In some embodiments, the object at which the user is looking during the shooting may change. In step 401, the terminal may continuously determine the gaze area in the shooting interface during the shooting. If the position of the gazing area is unchanged for a preset duration, which means that the user is gazing at a certain object continuously, the terminal can display the photometric control at the position of the gazing area. Then, if the position of the gazing area changes, for the new gazing area, if the position of the new gazing area is unchanged for a preset duration, which means that the user continuously gazes at another object instead, the terminal can display the photometry control at the position of the new gazing area; if the position of the new gazing area changes within the preset time length, the terminal does not adjust the position of the photometry control, and the fact that the sight of the user is unstable is indicated.

For example, taking a terminal as a mobile phone, a user looks at the moon in the preview image in the photographing interface 502 for a long time during photographing by using the mobile phone. After the mobile phone performs gaze point tracking, it may be determined that the gaze area in the shooting interface 502 is a moon area in the preview image and the position of the gaze area is unchanged for a long time, and as shown in fig. 6 (a), the mobile phone may automatically move the light measurement control 5021 to the moon area in the preview image for display. After that, the user looks at the window of the house in the lower preview image for a short time, and looks at the chimney of the house in the preview image for a long time. After the mobile phone performs gaze point tracking, it is determined that the gaze area in the shooting interface 502 is a window area of the house in the preview image, but the position of the gaze area changes in a short time, so the mobile phone does not move the light measurement control 5021 to the window area of the house in the preview image, then the mobile phone determines that the gaze area in the shooting interface 502 is a chimney area of the house in the preview image and the position of the gaze area does not change for a long time, and as shown in fig. 6 (b), the mobile phone can automatically move the light measurement control 5021 from the moon area in the preview image to the chimney area of the house in the preview image for display.

In this case, during the shooting with the mobile phone, the photometry control 5021 in the shooting interface 502 automatically moves to the moon area in the preview image as the user looks at the moon in the preview image in the shooting interface 502 for a long time. And then a short-time gaze by the user on the window of the house in the preview image in the capture interface 502 does not bring about a change in the position of the metering control 5021 in the capture interface 502. Then, as the user looks at the chimney of the house in the preview image in the photographing interface 502 for a long time, the metering control 5021 in the photographing interface 502 automatically moves from the moon area in the preview image to the chimney area of the house in the preview image. Thus, the shooting experience of the user can be greatly improved.

It should be noted that, after shooting is started, if the terminal does not detect the target operation, the terminal may continuously perform step 401 and step 402 to automatically move the photometry control in the shooting interface according to the gaze position of the user. Wherein the target operation is a user operation for moving the light detecting control. In the shooting process, if the terminal detects the target operation, the terminal may move the light measurement controller in the shooting interface according to the target operation, and the terminal may end step 401 and step 402, that is, before the shooting is ended, the terminal may not execute step 401 and step 402 any more. Therefore, the high priority of the user operation can be ensured, and the photometric area in the preview image is ensured to be closer to the intention of the user. For example, the target operation may be a drag operation of the user on the photometric control, and if the terminal detects the drag operation of the user on the photometric control in the shooting process, the terminal may move the photometric control according to the drag track of the user.

Further, after the terminal displays the metering control in the shooting interface, the metering value of the preview image can be determined according to the metering area indicated by the metering control in the preview image, and then the exposure processing is performed on the preview image according to the metering value of the preview image.

It should be noted that, in the embodiment of the present application, at the beginning of shooting, the terminal may automatically move the photometry controller to the position of the gazing area in the shooting interface. Then, if the user does not manually move the photometry control, the terminal takes the gazing area as a photometry area. If the user moves the photometry control unit manually, the terminal takes the area indicated by the photometry control unit after the user moves as the photometry area.

The metering region is a region in the preview image for determining the brightness of the photographed scene. The photometric value of the preview image can be determined according to the photometric area, and the photometric value of the preview image can indicate the brightness of a scene in which the preview image is shot. In this way, the preview image can be subjected to exposure processing based on the photometric value of the preview image. The selection of the photometric area is close to the intention of the user, so that the exposure processing of the preview image can achieve the exposure effect which meets the intention of the user.

Optionally, the operation of the terminal to determine the photometric value of the preview image according to the photometric area indicated by the photometric control in the preview image may include the following two ways:

the first way is: the terminal acquires the photometric value of the photometric area, and takes the photometric value of the photometric area as the photometric value of the preview image.

The metering region is a scopic region, and includes a plurality of pixels in the preview image. In this case, when the terminal obtains the photometric value of the photometric area, the average luminance value of the plurality of pixel points in the photometric area may be used as the photometric value of the photometric area; or, the terminal may assign the highest weight to the pixel point at the center position of the light measurement area, the weights of the pixel points from the center position of the light measurement area to the edge position of the light measurement area decrease sequentially, and then the terminal may perform weighted average on the brightness values of the plurality of pixel points in the light measurement area to obtain the light measurement value of the light measurement area.

In this way, the terminal can directly take the photometric value of the photometric area as the photometric value of the preview image, so that the photometric value of the preview image can be simply and quickly determined.

The second way is: the terminal acquires the photometric value of the photometric area and the photometric value of each target area in at least one target area in the preview image, and determines the photometric value of the preview image according to the photometric value of the photometric area and the photometric value of each target area in the at least one target area.

The target object may be predefined objects that require special attention when exposed. The target object may be preset by a technician according to photographing experience or photographing requirements. For example, the target object may be a human face, or the target object may be some objects with higher reflectivity, and of course, the target object may also be other objects, which is not limited in this embodiment of the present application. The object region of the target object is a scoped region, and the object region of the target object includes a plurality of pixel points in the preview image. In some embodiments, the terminal may detect whether a target object exists in the preview image, and if the target object exists in the preview image, the terminal may use an object area of the target object existing in the preview image as a target area, so that the exposure process may be performed with reference to a photometric value of the object area of the target object.

In this way, the terminal can determine the photometric value of the preview image by combining the photometric value of the photometric area and the photometric value of the at least one target area, so that not only is the user intention referred, but also the key image content of the preview image is referred, the photometric value of the preview image determined in this way is more accurate, and accordingly, the exposure process realized in the subsequent process is more accurate, and a better exposure effect can be achieved. In some embodiments, the photometric area used to determine the photometric value of the preview image and the at least one target area may both be referred to as a region of interest (region of interest, ROI) in the preview image.

The manner in which the terminal obtains the photometric value of the photometric area is the same as the manner in which the terminal obtains the photometric value of the photometric area in the first manner, which is not described in detail in this embodiment of the present application.

When the terminal obtains the photometric value of any one of the at least one target area, the average brightness value of a plurality of pixel points in the target area can be used as the photometric value of the target area; or, the terminal may assign the highest weight to the pixel point at the center position of the target area, the weights of the pixel points from the center position of the target area to the edge position of the target area decrease sequentially, and then the terminal may perform weighted average on the brightness values of the plurality of pixel points in the target area to obtain the photometric value of the target area.

In some embodiments, the terminal may adjust the weight of the photometric area and the weight of the target area. For example, in the history shooting process, when the terminal records that the object in the photometric area indicated by the user after manually moving the photometric control is often a target object of a certain type, the terminal may increase the object area of the target object of the certain type on the basis of the preset initial weight. Specifically, if the number of times that the terminal records that the object in the photometric area indicated by the user after manually moving the photometric control is a certain type of target object is greater than or equal to a preset number of times in the last multiple shooting process, the terminal may increase the weight of the object area of the certain type of target object. Or in the history shooting process, the terminal records that the light metering area indicated by the user after manually moving the light metering control is always a preset area at a certain position, and the terminal can increase the preset area at the certain position on the basis of preset initial weight. Specifically, if the number of times that the terminal records that the light metering area indicated by the user after manually moving the light metering control is a preset area of a certain position is greater than or equal to the preset number of times in the latest multi-shooting process, the terminal can increase the weight of the preset area of the certain position. Thus, the subsequent exposure can be more fit with the user requirement.

For example, the at least one target region includes a central region and a face region. As shown in fig. 7 (a), the terminal may determine a central area of the preview image 701, and the terminal may determine a gaze area in the preview image 701 after gaze point tracking during photographing. If the user does not manually move the metering controller and the terminal does not detect a face in the preview image 701, the terminal may perform weighted average on the metering value of the central area and the metering value of the gaze area of the preview image 701 to obtain the metering value of the preview image 701. Alternatively, as shown in fig. 7 (b), the terminal may determine a central area of the preview image 701, and the terminal may determine a gaze area in the preview image 701 after gaze point tracking during photographing. If the user does not manually move the photometry control, but the terminal detects a face in the preview image 701, the terminal may perform weighted average on the photometry value of the central area, the photometry value of the gaze area, and the photometry value of the face area of the preview image 701, to obtain the photometry value of the preview image 701.

In some embodiments, if the photometric value of the preview image determined by the terminal is not in the normal photometric value range, it indicates that an abnormality occurs, in this case, the terminal does not perform exposure processing on the preview image according to the photometric value of the preview image, but redetermines the photometric area and at least one target area in the preview image, and redetermines the photometric value of the preview image according to the redetermined photometric area until the determined photometric value is in the normal photometric value range, and then performs exposure processing on the preview image according to the photometric value of the preview image.

Alternatively, the operation of the terminal for performing exposure processing on the preview image according to the photometric value of the preview image may be: the terminal determines an exposure value according to the photometric value of the preview image, and uses the exposure value to perform exposure processing on the preview image.

The operation of determining the exposure value by the terminal according to the photometric value of the preview image is similar to the operation of determining the exposure value of an image by a certain device according to the photometric value of the image in the related art, which is not described in detail in the embodiment of the present application.

The operation of exposing the preview image by the terminal using the exposure value is similar to the operation of exposing the image by a certain device using a certain exposure value in the related art, which will not be described in detail in the embodiment of the present application.

After the terminal performs exposure processing on the preview image by using the exposure value, the preview image displayed in the shooting interface is the image subjected to the exposure processing. In this case, after the user sees the preview image, if it is determined that the preview image meets the requirement of the user, the user may trigger the shooting instruction, for example, the user may click a shooting button in the shooting interface to trigger the shooting instruction. After the terminal detects the shooting instruction, an image can be shot, and the shot image is subjected to exposure processing by using the exposure value, so that the shot image is an image meeting the exposure requirement of a user.

It should be noted that, the gaze point auxiliary function provided in the embodiment of the present application, that is, the function that the terminal determines the gaze area and automatically moves the photometry control according to the gaze area in the shooting process, may be selected by the user to be turned on or not. Specifically, a designation button may be provided in the terminal, and the user may turn on or off the gaze point auxiliary function by operating the designation button. If the user chooses to turn off the gaze point auxiliary functionality, the terminal does not perform the

above steps

401 and 402, in which case the movement of the photometric control displayed in the photographic interface is performed entirely manually by the user. If the user selects to turn on the gaze point assist function, the terminal may perform the above-described

steps

401 and 402 to determine a gaze area during photographing and automatically move the photometry control according to the gaze area.

In the embodiment of the application, gaze point tracking is performed in the shooting process to obtain a gaze area in the shooting interface, and then a photometry control can be automatically displayed at the position of the gaze area, wherein the photometry control is used for indicating the photometry area in the preview image in the shooting interface. Under the condition, the light metering control is automatically displayed at the gazing position of the user, so that the light metering control is simply and flexibly displayed, the light metering area in the preview image can be close to the intention of the user without manual operation of the user, and the use of the user is facilitated. In addition, since the light metering area is automatically adjusted according to the intention of the user, the subsequent exposure treatment realized according to the light metering area can be more in line with the exposure tendency of the user.

One possible implementation of the above-described light measurement control display method is illustrated below in conjunction with fig. 8.

Fig. 8 is a schematic diagram of a display method of a light measurement control unit according to an embodiment of the present application. Referring to fig. 8, the light measurement control display method includes steps 801 to 809 as follows:

step 801: the user turns on the gaze point assist function and then uses the terminal to take a photograph.

Step 802: and the terminal performs gaze point tracking in the shooting process.

The terminal performs gaze point tracking to determine a gaze area in the shooting interface.

In the process of gaze point tracking, the terminal can determine the gaze stay time, that is, how long the position of the gaze area is unchanged. If the position of the gazing area is unchanged for a preset time, the terminal can perform subsequent processing according to the gazing area.

Step 803: the terminal displays the photometry control at the position of the gazing area.

Step 804: the terminal detects whether a human face exists in the preview image of the shooting interface.

If the face exists in the preview image, continuing to execute the following

steps

805, 807 to 809; if no face exists in the preview image, the following steps 806 to 809 are continued.

Step 805: and if the face exists in the preview image, the terminal performs weighted average on the photometric value of the photometric area indicated by the photometric control in the preview image and the photometric value of the face area in the preview image to obtain the photometric value of the preview image.

Step 806: if no face exists in the preview image, the terminal takes the photometric value of the photometric area indicated by the photometric control piece in the preview image as the photometric value of the preview image.

Step 807: the terminal judges whether re-photometry is needed.

If the photometric value of the preview image is in the normal photometric value range, the terminal determines that re-photometry is not needed, and can continue to execute the subsequent steps. If the photometric value of the preview image is not in the normal photometric value range, which indicates that an abnormality occurs, the terminal determines that re-photometry is needed, and at this time, the terminal may re-execute step 802 and subsequent steps until the determined photometric value of the preview image is in the normal photometric value range, and then continue to execute subsequent steps.

Step 808: and if the re-metering is not needed, the terminal determines an exposure value according to the metering value of the preview image.

Step 809: the terminal performs exposure processing on the preview image using the exposure value, at which time the exposure is effective.

Fig. 9 is a schematic structural diagram of a light measurement control display device according to an embodiment of the present application, where the device may be implemented as part or all of a computer device, which may be a terminal as described in the embodiments of fig. 1 to 2, by software, hardware, or a combination of both. Referring to fig. 9, the apparatus includes: a gaze point tracking module 901 and a display module 902.

The gaze point tracking module 901 is configured to perform gaze point tracking during a shooting process, obtain a gaze area in a shooting interface, and display a preview image in the shooting interface;

the display module 902 is configured to display a photometry control at a position of the gazing area, the photometry control is configured to indicate the photometry area in the preview image, and the photometry control is capable of moving in the shooting interface.

It should be noted that: in the light measurement control display device provided in the above embodiment, only the division of the above functional modules is used for illustration when the light measurement control is displayed, and in practical application, the above functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The functional units and modules in the above embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the embodiments of the present application.

The display device of the light measurement control unit and the display method of the light measurement control unit provided by the embodiment belong to the same conception, and the specific working process and the technical effects brought by the units and the modules in the embodiment can be referred to the method embodiment part and are not repeated here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, data subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium such as a floppy Disk, a hard Disk, a magnetic tape, an optical medium such as a digital versatile Disk (Digital Versatile Disc, DVD), or a semiconductor medium such as a Solid State Disk (SSD), etc.

The above embodiments are not intended to limit the present application, and any modifications, equivalent substitutions, improvements, etc. within the technical scope of the present disclosure should be included in the protection scope of the present application.

Claims

1. A light measurement control display method, characterized by being applied to a terminal, the method comprising:

in the shooting process, gaze point tracking is carried out to obtain a gaze area in a shooting interface, and a preview image is displayed in the shooting interface;

and displaying a metering control at the position of the gazing area, wherein the metering control is used for indicating the metering area in the preview image, and the metering control can move in the shooting interface.

2. The method of claim 1, wherein the gaze point tracking during the shooting process comprises:

and if a starting instruction aiming at the camera application is detected, displaying the shooting interface and tracking the gaze point.

3. The method of claim 1, wherein the terminal has a front camera and a rear camera, and wherein the gaze point tracking during the capturing comprises:

if the preview image is the image shot by the front-end camera, acquiring a face image contained in the image shot by the front-end camera; or if the preview image is the image shot by the rear camera, starting the front camera to acquire a face image contained in the image shot by the front camera;

And performing gaze point tracking according to the face image.

4. The method of claim 1, wherein the displaying a photometric control at the location of the gaze region comprises:

and if the position of the gazing area is unchanged for a preset time, displaying the photometry control at the position of the gazing area.

5. The method of claim 1, wherein the method further comprises:

if no target operation is detected after shooting is started, executing the step of tracking the gaze point in the shooting process to obtain a gaze area in a shooting interface and the step of displaying a photometry control at the position of the gaze area, wherein the target operation is a user operation for moving the photometry control;

and if the target operation is detected in the shooting process, moving the photometry control according to the target operation, and ending the step of tracking the gaze point in the shooting process to obtain a gaze area in a shooting interface and the step of displaying the photometry control at the position of the gaze area.

6. The method of any one of claims 1 to 5, further comprising:

Determining a photometric value of the preview image according to a photometric area indicated by the photometric control in the preview image;

and performing exposure processing on the preview image according to the photometric value of the preview image.

7. The method of claim 6, wherein the determining the photometric value of the preview image from the photometric area indicated by the photometric control in the preview image comprises:

acquiring a photometric value of the photometric area, and acquiring a photometric value of each target area in at least one target area in the preview image;

and determining the photometric value of the preview image according to the photometric value of the photometric area and the photometric value of each target area in the at least one target area.

8. The method of claim 7, wherein the at least one target region comprises a central region of the preview image.

9. The method of claim 7, wherein the at least one target region comprises an object region of a target object present in the preview image.

10. The method of any of claims 7 to 9, wherein the determining the photometric value of the preview image from the photometric value of the photometric area and the photometric value of each of the at least one target area comprises:

And carrying out weighted average on the photometric value of the photometric area and the photometric value of each target area in the at least one target area to obtain the photometric value of the preview image.

11. The method of any one of claims 1 to 5, further comprising:

if a starting instruction aiming at camera application is detected, displaying the shooting interface and displaying the photometry control and the focusing control at the central position of the shooting interface;

the displaying the photometric control at the position of the gazing area comprises:

and separating the photometry control and the focusing control, and moving the separated photometry control to the position of the gazing area.

12. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, which computer program, when executed by the processor, implements the method according to any of claims 1 to 11.

13. A computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 11.