CN112822412B

CN112822412B - Exposure method, exposure device, electronic equipment and storage medium

Info

Publication number: CN112822412B
Application number: CN202011606030.9A
Authority: CN
Inventors: 王兆丰
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2023-04-07
Anticipated expiration: 2040-12-28
Also published as: CN112822412A

Abstract

The application discloses an exposure method and electronic equipment, belongs to the technical field of electronics, and aims to solve the problem that a picture is seriously smeared due to shaking of a photographer or movement of a shooting object during long exposure. Wherein, the exposure method comprises the following steps: under the condition that the first camera is exposed in a target duration, controlling a second camera to acquire at least two first images at a target frame rate; and controlling the first camera to stop exposure under the condition that the movement distance of a target shooting object in two adjacent first images acquired by the second camera is greater than a first threshold value. The exposure method is applied to the electronic equipment.

Description

Exposure method, exposure apparatus, electronic device, and storage medium

Technical Field

The application belongs to the technical field of electronics, and particularly relates to an exposure method and electronic equipment.

Background

At present, for electronic equipment with a photographing function, the film quality of the electronic equipment can be improved by improving the light sensitivity of the electronic equipment. Conventionally, the light sensing capability of an electronic device can be improved by prolonging the exposure time, and the method is particularly suitable for shooting scenes in dark environments such as night.

When a user takes a picture by using the long exposure function of the electronic device, the exposure time is relatively long, so that the phenomena of motion of a shooting object, shaking of the hand of the user and the like often occur during the exposure of the electronic device, and the picture is seriously smeared.

Therefore, in the process of implementing the present application, the inventors found that at least the following problems exist in the prior art: a serious smear phenomenon occurs in a picture due to a photographer shaking or a subject moving during a long exposure.

Disclosure of Invention

An object of the embodiments of the present application is to provide an exposure method, which can solve the problem of a serious smear phenomenon occurring in a picture due to shaking of a photographer or movement of a photographic object during a long exposure period.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides an exposure method, which is applied to an exposure apparatus, where the exposure apparatus includes a first camera and a second camera, and the method includes: under the condition that the first camera is exposed in a target duration, controlling the second camera to acquire at least two first images at a target frame rate; and controlling the first camera to stop exposure under the condition that the movement distance of a target shooting object in two adjacent first images acquired by the second camera is greater than a first threshold value.

In a second aspect, an embodiment of the present application provides an exposure apparatus, which includes a first camera and a second camera; the first control module is used for controlling the second camera to acquire at least two first images at a target frame rate under the condition that the first camera is exposed in a target duration; and the second control module is used for controlling the first camera to stop exposure under the condition that the movement distance of the target shooting object in two adjacent first images acquired by the second camera is greater than a first threshold value.

In a third aspect, embodiments of the present application provide an electronic device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium on which a program or instructions are stored, which when executed by a processor, implement the steps of the method according to the first aspect.

In a fifth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.

In this way, in the embodiment of the present application, when the first camera starts to expose the acquired image, the second camera starts to acquire continuous images at a higher target frame rate. If the fact that the moving distance of the target shooting object is larger than a first threshold value is detected in the first images of two continuous frames collected by the second camera in the exposure period, the phenomenon that the target shooting object moves appears in the images collected by the first camera. Therefore, the first camera is controlled to stop exposure, and the target image can be further output according to the image exposed by the first camera. Therefore, in the embodiment, by multi-path image acquisition, the motion phenomenon of the shot object appearing in the image can be quickly detected in the process of exposing the acquired image by the first camera, and the exposure is stopped as early as possible, so that the smear phenomenon of the picture caused by the shake of the photographer or the motion of the shot object is improved.

Drawings

Fig. 1 to 4 are flowcharts of an exposure method according to an embodiment of the present application;

fig. 5 is a block diagram of an exposure apparatus of an embodiment of the present application;

fig. 6 is a hardware configuration diagram of an electronic device according to an embodiment of the present application.

Fig. 7 is a second hardware structure diagram of the electronic device according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The exposure method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Fig. 1 shows a flowchart of an exposure method according to an embodiment of the present application, which is applied to an exposure apparatus including a first camera and a second camera.

The first camera is used for shooting images and is a main camera; the second camera is used for detecting whether the shooting subject in the image during the long exposure moves or not and is a sub camera.

The method comprises the following steps:

step S1: and under the condition that the first camera is exposed in the target duration, controlling the second camera to acquire at least two first images at the target frame rate.

Alternatively, the user enters a shooting mode after turning on the camera. In the shooting mode, the exposure apparatus in this embodiment performs basic photometry, and at this time, it is necessary to determine in advance the exposure time T required for obtaining appropriate image brightness. Furthermore, after the user clicks the photographing key, the first camera is controlled to be exposed for the exposure time T.

Correspondingly, the target duration is the exposure time T.

In this step, the first camera starts exposure, and at the same time, the second camera is controlled to start capturing the first image.

Wherein, the purpose that the second camera began to gather first image lies in: and collecting motion information in the images through high-frame-rate continuous image acquisition.

Optionally, the target frame rate is increased as much as possible on the premise of ensuring that the shooting object can be identified, so that the motion detection accuracy is higher. The target frame rate is, by reference, greater than or equal to 24 frames/second.

The second camera has a function of detecting whether the same subject is moving in two adjacent images by continuously capturing images, and therefore, in this step, the number of first images captured by the second camera is at least two.

Step S2: and controlling the first camera to stop exposure under the condition that the movement distance of the target shooting object is greater than a first threshold value in two adjacent first images acquired by the second camera.

Wherein the first image is a static image.

Alternatively, in the first image, if the proportion of the focused position object in the screen is greater than or equal to 30%, the focused position object is determined as the shooting object.

Optionally, the first image includes at least one photographic subject. Therefore, the target photographic subject in this step is any one of the at least one photographic subjects.

In this step, each first image is recorded in real time and the comparison is started from the second first image. If the displacement of the target shooting object is detected to be changed and the displacement is greater than the first threshold value compared with the previous first image in the currently acquired first image, that is, the movement distance of the target shooting object is greater than the first threshold value, the target shooting object moves, and correspondingly, the following results can be obtained: a target photographic subject in a photographic image moves during exposure.

Optionally, the first threshold is reduced as much as possible on the premise that the motion of the photographic subject can be identified, so that the motion detection precision is higher.

Among them, in the present embodiment, it is not limited to: the target photographic subject in the photographic image moves during exposure due to the movement of the target photographic subject in the actual photographic scene; a target photographic subject in a photographed image moves during exposure due to photographer shake, or the like.

Correspondingly, aiming at the phenomenon that the shaking of the photographer causes the target shooting object in the image to move during the exposure period, the embodiment can obtain the maximum light-sensitive capacity of the photographer in the range of controlling the body capacity (not shaking) of the photographer, and the improvement of the shooting effect is obtained; aiming at the phenomenon that the target shooting object moves in the actual shooting scene, the maximum light sensitivity of the target shooting object in the motionless range can be obtained, and the improvement of the shooting effect is obtained.

Further, an image exposed by the first camera is acquired, and a target image is generated according to the acquired image.

On one hand, in one shooting, the number of frames to be acquired is a single frame, and after the single frame acquisition is completed, the embodiment can ensure that the frame of picture is clear; on the other hand, in one-time shooting, the number of frames to be acquired is multiple frames, and after multiple single-frame acquisition is continuously completed, the multi-frame acquisition fragmentation rate and the strongest image quality can be ensured.

Alternatively, the first camera may use a photosensitive device and a lens having a larger amount of light to ensure a photographing effect of the target image.

Alternatively, the second camera may use a Dynamic Vision Sensor (DVS) sensor, so that the motion information is acquired more accurately and rapidly.

Optionally, the second camera may use a high frame rate and high resolution Time of flight (TOF) sensor, so that not only a faster focusing speed may be obtained in a darker environment to improve a night scene capture capability, but also a faster and accurate motion information may be obtained through the high frame rate in the darker environment, and meanwhile, the motion information in the depth direction may be detected.

Optionally, the second camera may be replaced with other functional devices, and more algorithms may be added, which may result in more performance or functional enhancements. Such as: in the image collected by the second camera, the judgment of the added main body and the locking algorithm are used, so that the judgment of the movement is only judged according to the movement of the main body part, and a more excellent effect of 'clear main body and background movement' (streamer shutter) can be obtained.

Thus, in the embodiment of the present application, when the first camera starts to expose the acquired image, the second camera starts to acquire continuous images at a higher target frame rate. If the fact that the moving distance of the target shooting object is larger than a first threshold value is detected in the first images of two continuous frames collected by the second camera in the exposure period, the phenomenon that the target shooting object moves appears in the images collected by the first camera. Therefore, the first camera is controlled to stop exposure, and the target image can be further output according to the image exposed by the first camera. Therefore, in the embodiment, by multi-path image acquisition, the motion phenomenon of the shot object appearing in the image can be quickly detected in the process of exposing the acquired image by the first camera, and the exposure is stopped as early as possible, so that the smear phenomenon of the picture caused by the shake of the photographer or the motion of the shot object is improved.

Further, when the target frame rate is high to a certain degree, the interval time of the two first images showing the movement of the target shooting object is extremely short, the movement amplitude can be regarded as small, and the two first images are hardly shown in the picture, so that the problem that the picture is smeared due to the shaking of a photographer or the movement of the shooting object is solved.

In the exposure method according to another embodiment of the present application, the method is applied to a shooting scene of a single-frame photograph.

Referring to fig. 2, the specific process can be referred to as: the first camera is used for collecting a frame of image to be used as a finally displayed target image. In the process that the first camera exposes the collected image, the first image can be continuously collected through the second camera, and whether the movement distance S of the shooting object in the current frame and the shooting object in the previous frame is larger than a first threshold value X or not is compared. If S is larger than X, the exposure is stopped. Meanwhile, before comparing whether the movement distance S is larger than the first threshold value X, whether the actual exposure time T is larger than the calculated exposure time T is judged. If T is larger than or equal to T, the exposure is finished, otherwise, the continuous two frames of the first images are continuously compared.

Further, after the exposure is stopped, the image collected by the first camera is output as a target image.

The embodiment can detect whether the motion of the shot object occurs in the exposure image in real time, so that the smear phenomenon does not occur in the target image, and the film forming rate of the single-frame photo is improved.

In a flow of an exposure method according to another embodiment of the present application, the target duration includes at least two sub-durations.

The embodiment is applied to shooting scenes of multiple pictures.

Step S2, comprising:

substep A1: and in one sub-time, controlling the first camera to stop exposure and controlling the first camera to expose for the next sub-time in the case that the motion of the target shooting object is greater than a first threshold value in two adjacent first images collected within one sub-time until the first camera completes the exposure times corresponding to the number of the sub-times included in the target time.

In an application scenario, for example, after a user opens a camera, the user enters a shooting mode. In the shooting mode, the exposure apparatus in this embodiment performs basic photometry, and at this time, it is necessary to determine in advance the number of exposures required if appropriate image brightness needs to be obtained, the exposure time and target brightness for each exposure, and the exposure sequence. Furthermore, after the user clicks a photographing key, the first camera is controlled to respectively expose the acquired images for multiple times.

In this embodiment, the exposure time of each exposure is respectively corresponding to each sub-duration included in the target duration, and the target duration is the total exposure time.

Referring to fig. 3, the specific process can be referred to as: the method comprises the steps that firstly, a first camera is used for collecting a first frame image (n = 1), in the process that the first camera exposes the collected first frame image, the first image can be continuously collected through a second camera, and whether the movement distance S of a shooting object in a current frame and a shooting object in a previous frame is larger than a first threshold value X or not is compared. If S is larger than X, the exposure is stopped. Meanwhile, before comparing whether the movement distance S is larger than the first threshold value X, judging whether the actual exposure time T is larger than the calculated first exposure time T. If T is larger than or equal to T, the first exposure is completed, otherwise, the continuous two frames of the first image are continuously compared.

Then, n = n +1 is set, i.e., the first camera is ready to be controlled to start capturing the second frame image. It is determined whether N is greater than the set exposure number N. If N is larger than N, the set exposure times are finished, and all image frame acquisition is stopped. And if N is less than or equal to N, continuing to expose the next frame of image.

In this embodiment, if multiple frames of sticky images are collected (e.g., a dynamic bracketing algorithm used in a night scene), a single-frame image collection method may be repeated to sequentially collect multiple frames of images, and each frame of image is obtained with the longest exposure without smearing. Furthermore, the images shot by the method are finally subjected to multi-frame synthesis, and the phenomenon of smear cannot occur on the basis of each frame of image, so that the photo effect is better, and the film forming rate of multiple frames of photos is improved.

In the flow of the exposure method according to another embodiment of the present application, after controlling the first camera to stop exposure, the method further includes:

step B1: and acquiring a second image output by the first camera after exposure for one sub-time length.

In this step, for a shooting scene of multiple frames of photographs, each time exposure of one frame of image is completed, a second exposed image may be acquired to perform photometry.

And step B2: an exposure result of the second image is acquired.

Optionally, the photometric data includes an exposure result of the second image.

The exposure result of the second image at least shows whether the exposure effect of the second image reaches a preset effect.

And step B3: and under the condition that the exposure result does not meet the preset condition, updating the target duration.

The preset condition may be related to a predetermined image brightness.

Optionally, the second image is used to represent an image obtained after exposure, and the preset conditions corresponding to the exposure result of the second image corresponding to different frames can be set independently.

Optionally, the preset conditions corresponding to the exposure result of the second image corresponding to each frame may also be related to the exposure effect of the target image to be displayed finally.

In this embodiment, when it is detected that the photographic subject in the image moves, the exposure is stopped, so that the actual exposure time is not consistent with the calculated exposure time, and the exposure effect may be affected.

It should be noted that, after each exposure is completed, photometric detection is performed on the exposed second image, and the target duration is adjusted in real time.

For example, three exposures of 0.5s are set. During the exposure, the exposure is stopped due to the detection of the movement of the photographic subject in the image. Thus, the original three 0.5s exposures are updated to six 0.5s exposures to achieve the same exposure effect as the initial setting. Thus, the set target time period is 1.5s, and the updated target time period is 3s.

In this embodiment, by using the shooting characteristic that multiple exposures can be performed on multiple frames of pictures, the exposure result of the exposed second image can be detected, so as to dynamically determine whether the set target duration needs to be updated according to the exposure result. For example, if the exposure result does not achieve the expected effect, i.e. the preset condition in the embodiment, the target duration needs to be reset, so that the target image finally presented can achieve the expected exposure effect. Therefore, the embodiment can ensure the exposure effect and improve the sheeting rate while solving the smear phenomenon.

In a flow of an exposure method according to another embodiment of the present application, step B3 includes:

substep C1: according to the exposure result, the number of sub-durations included in the target duration is increased, and the length of the increased sub-duration is set.

In the present embodiment, a method for updating a target duration is provided.

In general, the actual exposure time is smaller than the calculated exposure time, resulting in poor exposure effect. Therefore, the number of exposures can be increased to increase the actual exposure time. Specifically, the number of exposures is increased according to the detected exposure result, while setting the exposure time corresponding to the increased number of exposures.

For example, three exposures of 0.5s are set. During the exposure, the exposure is stopped due to the detection of the movement of the photographic subject in the image. Thus, the original three 0.5s exposures are updated to six 0.5s exposures to achieve the exposure effect consistent with the initial setting.

Referring to the flowchart shown in fig. 4, a step of determining whether or not the value of the exposure count N needs to be reset is added to the flowchart shown in fig. 3, and in the case of determining that the value of the exposure count N needs to be reset, the initial value of N is set to N = N ', where N' is the updated exposure count.

In the present embodiment, in the case where the pause exposure occurs, the initial exposure effect can be achieved by increasing the number of exposures. Therefore, the embodiment can ensure the exposure effect and improve the sheeting rate while solving the smear phenomenon.

In a flow of an exposure method according to another embodiment of the present application, after the first camera completes exposure, the method further includes:

step D1: and acquiring a second image output by the first camera after each exposure.

Step D2: and generating a target image according to the second image.

The present embodiment is applicable to a night scene or a shooting scene in a dark environment. When the camera is used for imaging by pressing a shutter, a plurality of/a plurality of frames of pictures, namely the second image in the embodiment, different pixel points with noise properties are found under different frame numbers, and a clean and pure night scene or dark light picture, namely a final synthesized target image, is obtained after weighted synthesis.

In this embodiment, the acquired multi-frame image is used to complete the required multi-frame image processing, and finally a photo is output as the target image. Therefore, the target image obtained by processing the multiple frames of images achieves the effects of noise reduction and the like, solves the problem of smear phenomenon and improves the flaking rate of the multiple frames of photos.

With reference to the exposure method of the embodiment of the present application, not less than 2 image inputs can be used, and more devices and algorithms can be matched with different image inputs to provide more functions or improve performance.

In summary, the embodiment of the present application utilizes the characteristics of multi-channel image input to extend the exposure time of each frame of a camera user as much as possible, so that the camera obtains better light sensing capability, improves the single-frame photo filming rate, optimizes the single-frame and multi-frame night scene algorithm, and obtains better night scene shooting effect.

In addition, the embodiment of the application not only provides a long exposure function to improve the light sensing capability of the device, but also can improve the light sensing capability of the device by using more excellent optical anti-shake devices, adding a multi-frame algorithm and the like, thereby achieving the purpose of improving the quality of the picture.

It should be noted that, in the exposure method provided in the embodiment of the present application, the execution main body may be an exposure apparatus, or a control module for executing the exposure method in the exposure apparatus. In the embodiment of the present application, an exposure apparatus for performing an exposure method is taken as an example, and the exposure apparatus for performing the exposure method provided in the embodiment of the present application is described.

Fig. 5 shows a block diagram of an exposure apparatus according to another embodiment of the present application, including:

a first camera 10 and a second camera 20;

the first control module 30 is configured to control the second camera to acquire at least two first images at the target frame rate when the first camera performs exposure for the target duration;

and the second control module 40 is configured to control the first camera to stop exposure when the moving distance of the target shooting object in two adjacent first images acquired by the second camera 20 is greater than a first threshold.

Thus, in the embodiment of the present application, when the first camera starts to expose the acquired image, the second camera starts to acquire continuous images at a higher target frame rate. If the fact that the moving distance of the target shooting object is larger than a first threshold value is detected in the first images of two continuous frames collected by the second camera in the exposure period, the phenomenon that the target shooting object moves appears in the images collected by the first camera. Therefore, the first camera is controlled to stop exposure, and the target image can be further output according to the image exposed by the first camera. Therefore, in the embodiment, by multi-path image acquisition, the motion phenomenon of the shooting object appearing in the image can be quickly detected in the process of exposing the acquired image by the first camera, and the exposure is stopped as soon as possible, so that the smear phenomenon of the picture caused by the shaking of the shooting person or the motion of the shooting object is improved.

Optionally, the target duration comprises at least two sub-durations;

a second control module 40 comprising:

and the multi-frame control unit is used for controlling the first camera to stop exposure and controlling the first camera to expose for the next sub-time in the case that the movement distance of the target shooting object is greater than a first threshold value in two adjacent first images collected within one sub-time, until the first camera finishes the exposure times corresponding to the number of the sub-times included in the target time.

Optionally, the second control module 40 further includes:

the first acquisition unit is used for acquiring a second image output by the first camera after exposure for one sub-duration;

a second acquisition unit configured to acquire an exposure result of the second image;

and the updating unit is used for updating the target duration under the condition that the exposure result does not meet the preset condition.

Optionally, the update unit includes:

and an exposure number updating subunit, configured to increase, according to the exposure result, the number of sub-durations included in the target duration, and set a length of the increased sub-duration.

Optionally, the apparatus further comprises:

the image acquisition module is used for acquiring a second image output by the first camera after each exposure;

and the image generation module is used for generating a target image according to the second image.

The exposure apparatus in the embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiment of the present application is not particularly limited.

The exposure apparatus in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The exposure apparatus provided in the embodiment of the present application can implement each process implemented in the above method embodiment, and is not described here again to avoid repetition.

Optionally, as shown in fig. 6, an electronic device 100 is further provided in this embodiment of the present application, and includes a processor 101, a memory 102, and a program or an instruction stored in the memory 102 and executable on the processor 101, where the program or the instruction is executed by the processor 101 to implement each process of any one of the foregoing embodiments of the exposure method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

Fig. 7 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.

The electronic device 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, a processor 1010, a first camera 1011, a second camera 1012, and the like.

Those skilled in the art will appreciate that the electronic device 1000 may further comprise a power supply (e.g., a battery) for supplying power to the various components, and the power supply may be logically connected to the processor 1010 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 7 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

The processor 1010 is configured to control the second camera 1012 to acquire at least two first images at a target frame rate under the condition that the first camera 1011 performs exposure for a target duration; and controlling the first camera 1011 to stop exposure when the movement distance of the target shooting object in two adjacent first images acquired by the second camera 1012 is greater than a first threshold value.

In this way, in the embodiment of the present application, when the first camera 1011 starts exposure of the captured images, the second camera 1012 starts capturing of continuous images at a higher target frame rate. If the moving distance of the target photographic object is detected to be greater than the first threshold value in the first images of two continuous frames collected by the second camera 1012 during the exposure period, the target photographic object moves in the images collected by the first camera 1011. Therefore, the first camera 1011 is controlled to stop the exposure, and the target image can be further output based on the exposed image of the first camera 1011. It can be seen that in the present embodiment, by multi-path image acquisition, in the process of exposing the acquired image by the first camera 1011, the motion phenomenon of the photographic subject appearing in the image can be detected quickly, and the exposure can be stopped as soon as possible, so that the smear phenomenon appearing in the picture due to the shake of the photographer or the motion of the photographic subject can be improved.

Optionally, the target duration comprises at least two sub-durations; the processor 1010 is further configured to control the first camera 1011 to stop exposure and control the first camera 1011 to expose for the next sub-time length in the case that the movement distance of the target shooting object in the two adjacent first images acquired within one sub-time length is greater than a first threshold value, until the first camera 1011 completes the exposure times corresponding to the number of the sub-time lengths included in the target time length.

Optionally, the processor 1010 is further configured to acquire a second image output by the first camera 1011 after being exposed for the one sub-duration; acquiring an exposure result of the second image; and under the condition that the exposure result does not meet the preset condition, updating the target duration.

Optionally, the processor 1010 is further configured to increase the number of sub-durations included in the target duration according to the exposure result, and set the length of the increased sub-durations.

Optionally, the processor 1010 is further configured to acquire a second image output by the first camera 1011 after each exposure; and generating a target image according to the second image.

It should be understood that, in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 1009 may be used to store software programs as well as various data, including but not limited to application programs and operating systems. The processor 1010 may integrate an application processor, which primarily handles operating system, user interface, and applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

Embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of any one of the foregoing embodiments of the exposure method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of any one of the above exposure method embodiments, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An exposure method is applied to an exposure device, and is characterized in that the exposure device comprises a first camera and a second camera, and the method comprises the following steps:

under the condition that the first camera is exposed in a target duration, controlling the second camera to acquire at least two first images at a target frame rate;

in two adjacent first images acquired by the second camera, controlling the first camera to stop exposure under the condition that the movement distance of a target shooting object is greater than a first threshold value;

wherein the target duration comprises at least two sub-durations;

the controlling the first camera to stop exposure when the moving distance of the target shooting object in two adjacent first images acquired by the second camera is greater than a first threshold value comprises:

in a sub-time length, controlling the first camera to stop exposure and controlling the first camera to expose for the next sub-time length in the situation that the movement distance of a target shooting object is larger than a first threshold value in two adjacent first images collected in the first sub-time length until the first camera finishes the exposure times corresponding to the number of the sub-time lengths included in the target time length;

wherein, after control the first camera stops exposing, still include:

acquiring a second image output by the first camera after exposure in the sub-duration;

acquiring an exposure result of the second image;

under the condition that the exposure result does not meet a preset condition, updating the target duration;

wherein the updating the target duration includes:

and according to the exposure result, increasing the number of sub-durations included in the target duration, and setting the length of the increased sub-durations.

2. The method of claim 1, after the first camera completes exposure, further comprising:

acquiring a second image output by the first camera after each exposure;

and generating a target image according to the second image.

3. An exposure apparatus, characterized in that the exposure apparatus comprises a first camera and a second camera, the apparatus further comprising:

the first control module is used for controlling the second camera to acquire at least two first images at a target frame rate under the condition that the first camera is exposed in a target duration;

the second control module is used for controlling the first camera to stop exposure under the condition that the movement distance of a target shooting object in two adjacent first images acquired by the second camera is greater than a first threshold value;

wherein the target duration comprises at least two sub-durations;

the second control module includes:

the multi-frame control unit is used for controlling the first camera to stop exposure and controlling the first camera to expose for the next sub-time length in the case that the movement distance of the target shooting object is greater than a first threshold value in two adjacent first images collected within one sub-time length until the first camera completes the exposure times corresponding to the number of the sub-time lengths included in the target time length;

wherein, the second control module further comprises:

the first acquisition unit is used for acquiring a second image output by the first camera after the first camera is exposed in the sub-duration;

the updating unit is used for updating the target duration under the condition that the exposure result does not meet a preset condition;

wherein the update unit includes:

and the exposure number updating subunit is used for increasing the number of the sub-durations included in the target duration according to the exposure result and setting the length of the increased sub-durations.

4. An electronic device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which program or instructions, when executed by the processor, carry out the steps of the exposure method according to any one of claims 1-2.

5. A readable storage medium, characterized in that a program or instructions are stored thereon which, when executed by a processor, carry out the steps of the exposure method according to any one of claims 1-2.