CN115278047A - Shooting method, shooting device, electronic equipment and storage medium - Google Patents
Shooting method, shooting device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application discloses a shooting method, a shooting device, electronic equipment and a storage medium, and belongs to the field of camera shooting. The shooting method comprises the following steps: receiving a first input of a user to a shooting preview interface; responding to the first input, and acquiring at least one frame of target cache image; obtaining a target image based on at least one frame of target cache image; when the first input is carried out, the shooting device moves relative to the shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before receiving a first input; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of a shooting scene corresponding to the shooting preview interface of the shooting device or motion information of a moving object.
Description
Technical Field
The application belongs to the field of camera shooting, and particularly relates to a shooting method, a shooting device, electronic equipment and a storage medium.
Background
At present, when a moving scene is shot, the effect of snapshot is not ideal due to long exposure time, and a serious smear phenomenon occurs. Reducing the exposure time, increasing the gain can be achieved at the time of shooting.
When the exposure time is reduced, a preview picture is normal, but the exposure time and the exposure gain are updated when shooting is performed, the exposure time and the exposure gain need to be reset, and an image frame is output again, so that the shooting speed is greatly reduced, the concept of taking a snapshot is not met, a picture is taken at the moment of taking the snapshot, and the moment of recording by a user cannot be captured.
Disclosure of Invention
The embodiment of the application aims to provide a shooting method, a shooting device, electronic equipment and a storage medium, which can solve the problem of shooting delay in the related art.
In a first aspect, an embodiment of the present application provides a shooting method, including:
receiving a first input of a user to a shooting preview interface;
responding to the first input, and acquiring at least one frame of target cache image;
obtaining a target image based on the at least one frame of target cache image;
when the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to the shooting scene or motion information of the moving object.
In a second aspect, an embodiment of the present application provides a shooting device, including:
the first receiving module is used for receiving a first input of a user to the shooting preview interface;
a first obtaining module, configured to obtain at least one frame of target cache image in response to the first input;
the first determining module is used for obtaining a target image based on the at least one frame of target cache image; when the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to the shooting scene or motion information of the moving object.
In a third aspect, embodiments of the present application provide an electronic device, which includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, 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, an embodiment of the present application provides 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 a sixth aspect, embodiments of the present application provide a computer program product, stored on a storage medium, for execution by at least one processor to implement the method according to the first aspect.
In the embodiment of the application, at least one frame of target cache image obtained by pre-exposing according to the first exposure parameter before receiving the first input can be directly obtained by responding to the first input of the user to the shooting preview interface, and then the target image can be obtained according to the at least one frame of target cache image.
Drawings
FIG. 1 is a schematic diagram illustrating exposure using a common exposure technique according to an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating exposure using an exposure overlay technique in accordance with an exemplary embodiment;
FIG. 3 is a flowchart illustrating a photographing method according to an exemplary embodiment;
FIG. 4 is a schematic diagram illustrating a configuration of a camera according to an exemplary embodiment;
FIG. 5 is a schematic diagram illustrating a configuration of an electronic device in accordance with an exemplary embodiment;
fig. 6 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly 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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
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 "/", and generally means that the former and latter related objects are in an "or" relationship.
As described in the background section, in order to solve the problem of photographing delay in performing motion capture in the prior art, an embodiment of the present application provides a photographing method, which can directly obtain at least one frame of target cache image obtained by pre-exposing according to a first exposure parameter before receiving a first input by a user, and then obtain a target image according to the at least one frame of target cache image, by responding to the first input to a photographing preview interface by the user, because the at least one frame of target cache image is the at least one frame of image frame obtained by pre-exposing according to the first exposure parameter before receiving the first input, when the photographing preview interface is photographed, the at least one frame of target cache image obtained in advance can be directly obtained, and re-exposure is not required, thereby increasing the photographing speed.
Before describing the technical solutions of the embodiments of the present application, the exposure overlay techniques used in the technical solutions of the present application will be described first.
As shown in fig. 1, it is assumed that the exposure time of two frames is different, and during the exposure, after the first line 110 of the first frame is exposed and read, it is necessary to wait for the last line 140 of the first frame to be exposed and read before reading the exposure data of the first line 120 of the second frame, and the exposure interval H1 of the two frames is larger.
As shown in fig. 2, assuming that the exposure time of two frames is different, after the first line 210 of the first frame is exposed and read, the exposure and reading of the last line 240 of the first frame does not need to wait for the exposure and reading of the first line 220 of the first frame, but can be directly continued, and the exposure interval H2 of the two frames is shorter.
The shooting 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. 3 is a schematic flowchart of a shooting method provided in an embodiment of the present application, where an execution subject of the shooting method may be a shooting device, and the shooting device may be integrated with an electronic apparatus or used separately, which is not limited herein. The above-described executing body does not limit the embodiments of the present application.
In the embodiment of the present application, the electronic device may be an intelligent terminal having a shooting function, and specifically, may be, but is not limited to, a Personal Computer (PC), a smart phone, a tablet Computer, a Personal Digital Assistant (PDA), or the like.
As shown in fig. 3, the photographing method provided by the embodiment of the present application may include steps 310 to 340.
And 310, receiving a first input of a user to the shooting preview interface.
Wherein the first input may be an input for photographing the photographing preview interface. The first input may be a click input, a double-click input, a slide input, a voice input, a gesture input, or the like of a user on a shooting control of the electronic device, or may be a combination input of at least two of the foregoing inputs, which is not limited herein.
Step 320, in response to the first input, obtaining at least one frame of target buffer image.
Wherein the target buffer image may be an image frame acquired in response to the first input. The specific target buffer image may be at least one frame of the plurality of images exposed according to the first exposure parameter before the first input is received. Namely, the target buffer image is at least one image frame in a multi-frame image obtained by controlling the shooting device to expose the photosensitive unit in the image sensor according to the first exposure parameter from the beginning of accurate shooting (namely displaying a shooting preview interface) of the user to the end of the time when the user presses the shooting shutter.
The method may include storing multiple frames of images obtained by exposing a photosensitive unit in an image sensor by a shooting device according to a first exposure parameter into a buffer space, and acquiring at least one frame of target buffer image from the buffer space in response to a first input after receiving the first input of a user to a shooting preview interface.
The photographing device may be a multi-frame image obtained by exposing the photosensitive unit in the image sensor in an overlapping exposure manner when exposing the photosensitive unit in the image sensor according to the first exposure parameter.
The first exposure parameter may here be determined based on the second exposure parameter and the motion information. The second exposure parameter may be an exposure parameter corresponding to a target preview image displayed on the shooting preview interface. The exposure parameters (the first exposure parameter and the second exposure parameter) herein may include an exposure time and an exposure gain.
The target preview image may be a preview image having a luminance value satisfying a preset condition. The preset condition here may be that the luminance value at the time of normal exposure is satisfied. That is, the second exposure parameter may specifically be a parameter value when the luminance value of the shooting preview interface display preview image satisfies the normal luminance (for example, may be a value determined based on the exposure time and the exposure gain).
The motion information may be motion information of the photographing device relative to a photographing scene corresponding to the photographing preview interface, or motion information of a moving object, where the moving object may be a moving object in the photographing scene.
The following describes a specific application scenario of motion information in detail:
1) And the motion information of the shooting device relative to the shooting scene corresponding to the shooting preview interface:
specifically, for example, the shooting may be performed on a moving vehicle, and in this case, the shooting device is moving with respect to the shooting scene corresponding to the shooting preview interface.
2) Motion information of the moving object:
specifically, for example, the initial shooting scene may be always static, and a bird, which is a moving object, is suddenly entered. Namely, a moving object is added to a static shooting scene.
Step 330, obtaining a target image based on at least one frame of target cache image.
The target image may be a final image obtained by processing the acquired at least one frame of target cache image.
In some embodiments of the present application, in order to further increase the speed of photographing, before step 310, the photographing method mentioned above may further include:
determining a second exposure parameter corresponding to the target preview image according to the light intensity information in the shooting scene;
acquiring motion information of a shooting device relative to the shooting scene or motion information of a moving object in the shooting scene;
determining a first exposure parameter based on the second exposure parameter and the motion information;
and controlling an image sensor of the shooting device to expose according to the first exposure parameter based on the overlapping exposure mode to obtain at least one frame of cache image.
The second exposure parameter may be an exposure parameter for normally exposing a shooting scene when the shooting scene is shot.
The first exposure parameter may be an exposure parameter for performing a motion exposure on the shooting scene when the shooting scene is shot.
The at least one frame of buffer image may be an image frame obtained by exposing the photosensitive unit in the image sensor according to the first exposure parameter based on the overlay exposure technique. The at least one frame buffer image may include a target buffer image.
In some embodiments of the application, when performing the motion capture, an automatic exposure control module in the electronic device may calculate, according to light intensity information in a shooting scene corresponding to a current shooting preview interface, a second exposure parameter of normal exposure when the shooting scene is shot, that is, an exposure parameter corresponding to a target preview image displayed on the shooting preview interface. How to calculate the second exposure parameter of the normal exposure when shooting the shooting scene according to the light intensity information in the current shooting scene belongs to the prior art, and is not described herein again.
After the second exposure parameter is obtained, the second exposure parameter may be sent to the motion module, and the motion module may calculate the first exposure parameter of the motion exposure when the shooting scene is shot according to the second exposure parameter and the motion information (i.e., the motion information of the shooting device relative to the shooting scene or the motion information of the moving object in the shooting scene).
Specifically, according to the second exposure parameter and the motion information, the first exposure parameter for calculating the motion exposure when the shooting scene is shot may be: the first exposure parameters (exposure time and exposure gain) are converted according to the motion level of the motion information, specifically, the exposure time is decreased, and the exposure gain is increased (the greater the motion level of the motion information is, the greater the exposure time is decreased, and the greater the exposure gain is increased), but the requirement shown in the following formula (1) needs to be satisfied:
normalexptime*normalgain＝sportexptime*sportgain (1)
among them, normalexptimeRepresents the exposure time at the time of normal exposure; normal modelgainRepresents the exposure gain at the time of normal exposure; sportsexptimeRepresents the exposure time at the time of the motion exposure; sportsgainRepresenting the exposure gain at the time of the motion exposure.
And then, the first exposure parameter can be sent to the image sensor through an I2C transmission bus, and after the image sensor receives the first exposure parameter, the photosensitive unit in the sensor can be exposed by using an overlapping exposure technology according to the first exposure parameter to obtain at least one frame of cache image.
Then, the image sensor transmits at least one frame of buffer image to the image signal processing module, specifically, a virtual channel identification (VC ID) is respectively set for each frame of buffer image, each frame of buffer image is transmitted to the image signal processing module based on the VC ID, and the image signal processing module may analyze each received frame of buffer image based on a Camera Serial Interface Decoder (CSID), and then each frame of buffer image may be buffered in the buffer space.
It should be noted that each frame of the buffered image in the buffer space has its corresponding VC ID, and the larger the VC ID is, the later the image is stored, that is, the shorter the time for storing the image is. The smaller the VC ID, the longer it has been in existence.
In the embodiment of the application, a second exposure parameter corresponding to a target preview image can be determined according to light intensity information in a shooting scene, and then a first exposure parameter of a moving exposure during shooting of the shooting scene can be calculated based on the second exposure parameter and the motion information (motion information of a shooting device relative to the shooting scene or motion information of a moving object in the shooting scene).
In some embodiments of the present application, reducing the exposure time and increasing the gain may be implemented at the time of shooting preview, in addition to shooting. If the reduction of the exposure time is implemented during the shooting preview, a severe stripe (banding) phenomenon is easily caused due to the rapid reduction of the exposure time, and the exposure time is extremely small, so that the variation of the compensation value of the exposure gain is very large when the environment changes, thereby causing the jump of the color, noise and tone of the picture to be shot and previewed, and the experience is very poor.
In order to solve the above problem, after the determining the first exposure parameter based on the second exposure parameter and the motion information, the above shooting method may further include:
controlling an image sensor of the shooting device to perform exposure according to the second exposure parameter based on the overlapping exposure mode to obtain a target preview image;
and displaying the target preview image in the shooting preview interface.
The target preview image may be an image obtained by controlling an image sensor of the photographing device to perform exposure according to the second exposure parameter based on the overlay exposure mode.
In some embodiments of the present application, after the sensor module receives the second exposure parameter, the image sensor of the shooting device may be further controlled to perform exposure according to the second exposure parameter based on an overlay exposure manner, so as to obtain a multi-frame preview image (i.e., a target preview image). Then, the target preview image is transmitted to an image signal processing module, specifically, a Mobile Industry Processor Interface (MIPI) virtual channel identification (VC ID) is set for the target preview image, the target preview image is transmitted to the image signal processing module based on the VC ID, the image signal processing module can analyze the received target preview image based on the CSID, and then the target preview image can be transmitted to a shooting preview processing stream for processing, specifically, the target preview image is transmitted to a processing flow of a RAW format image to a YUV processing module, the processing flow includes processing of color, noise, and tone, and then the preview image displayed on the shooting preview Interface is updated, that is, the processed target preview image is updated to the preview image displayed on the shooting preview Interface.
It should be noted that, when both the first exposure parameter and the second exposure parameter are sent to the sensor module, the first exposure parameter may be sent first, and then the second exposure parameter is sent, so that the sensor module controls the image sensor of the photographing device to perform exposure by using the first exposure parameter and the second exposure parameter respectively in an overlapping exposure manner, specifically, the exposure may be performed according to the first exposure parameter first, and then the exposure may be performed according to the second exposure parameter, so that the image frame at the moment of motion can be better obtained.
It should be noted that, when both the first exposure parameter and the second exposure parameter are sent to the sensor module, different VC IDs are used to send the first exposure parameter and the second exposure parameter to the sensor module, respectively.
In some embodiments of the present application, the exposure parameters may include exposure time and exposure gain. Specific first exposure parameters may include: a first exposure time and a first exposure gain. The second exposure parameters may include: a second exposure time and a second exposure gain.
In the above-described calculation of the first exposure parameter based on the second exposure parameter, it may be specific that the product of the first exposure time and the first exposure gain is equal to the product of the second exposure time and the second exposure gain.
Correspondingly, the luminance value of the target buffer image is equal to the luminance value of the target preview image.
In the embodiment of the application, the image sensor of the shooting device is controlled to be exposed based on the overlapping exposure mode according to the second exposure parameter to obtain the target preview image, and then the target preview image is displayed in the shooting preview interface, so that the displayed target preview image is stable in effect and free from stripe phenomenon, and the finally obtained target preview image is free from jump in color, noise and tone.
In some embodiments of the present application, the following describes acquiring at least one frame of the target buffer image with respect to the above two kinds of motion information.
1) For the case that the shooting device moves relative to the shooting scene, step 320 may specifically include:
and under the condition that the shooting device moves relative to the shooting scene, acquiring at least one frame of target buffer image from at least one frame of buffer image.
At least one frame of target cache image may be matched with the current preview image by a degree smaller than a preset threshold.
The current preview image may be an image displayed by the shooting preview interface when the first input is received.
The matching degree between the at least one frame of target cache image and the current preview image may be a matching degree between image contents of the at least one frame of target cache image and image contents of the current preview image.
The preset threshold may be a preset threshold of the matching degree between at least one frame of target cache image and the current preview image, and the threshold may be set according to the user requirement, which is not limited herein.
In some embodiments of the present application, in the case where the motion information is the first: in the case of a camera moving relative to a shooting scene, for example, when shooting in a fast car, a user actually suddenly sees a certain scene and wants to take a snapshot, which is sudden, and there should be a certain delay from seeing the scene to clicking the shooting, and since the shooting scene is always changing, when the first input of clicking the shooting control by the user is received, a cached image (i.e., a target cached image) stored for a certain period of time can be obtained from the cached space as much as possible.
In some embodiments of the application, under the condition that a shooting device moves relative to a shooting scene, at least one frame of target cache image is obtained from at least one frame of cache image, where the matching degree of the at least one frame of target cache image with a current preview image is smaller than a preset threshold, the current preview image may be an image displayed on a shooting preview interface when receiving a first input, that is, under the condition that the shooting device moves relative to the shooting scene, a cache image with the largest matching difference with the current preview image may be selected.
2) For the case that the shooting scene includes a moving object, step 320 may specifically include:
under the condition that a shooting scene comprises a moving object, acquiring at least one frame of target cache image from at least one frame of cache image;
at least one frame of target cache image may be matched with the current preview image by more than a preset threshold.
The current preview image may be an image displayed by the shooting preview interface when the first input is received.
The matching degree between the at least one frame of target cache image and the current preview image may be a matching degree between the image content of the at least one frame of target cache image cached and the image content of the current preview image.
The preset threshold may be a preset threshold of the matching degree between at least one frame of target cache image and the current preview image, and the threshold may be set according to the user requirement, which is not limited herein.
In some embodiments of the present application, in the case where the motion information is the second case: when a moving object is included in a shooting scene, for example, the initial shooting scene may be still, and when a moving object such as a bird suddenly enters, in this case, a user should capture a certain moving object in a fixed shooting scene, the user is ready to see the moving object, the shooting delay from the time of clicking to shoot is short, and in this case, the preview picture is similar to a picture to be captured, so that a cache image with the best matching degree may be selected, that is, the cache image just stored (i.e., a target cache image) may be obtained from the cache space as much as possible.
In one example, assuming that there are 8 buffered images in the buffer space, and the 8 buffered images respectively have different VC IDs, in the case of a camera moving relative to the shooting scene, a buffered image with VC ID of 0-3 may be taken (i.e. the time difference from the image displayed on the current preview interface is larger because the earlier stored buffered image has smaller VC ID). In the case of a moving object included in the shooting scene, a cache image with VC ID 4-7 may be taken (i.e., the image displayed on the current preview interface has a smaller time difference, because the later the cache image is stored, the larger VC ID is).
It should be noted that, for the above two kinds of motion information, which frame is specifically selected may be selected according to the user's requirement. And performing simple feature matching on each frame of cache image in the VC ID and the image displayed on the current shooting preview interface, and selecting a specific cache image according to a feature matching result. Specifically, under the first motion information, the largest matching difference may be selected, because it is considered that the shooting scene changes all the time, and there is a difference between the shooting preview picture and the shooting scene to be captured when the shooting is clicked, the largest matching difference may be selected, for example, a cache image with VC ID of 0 may be selected. In the second motion information, the matching difference can be selected to be the smallest, because the shooting scene is static, and only at the moment when a moving object is to be shot, the shooting preview picture is similar to the picture to be shot, so the matching difference can be selected to be the smallest.
In some embodiments of the application, when a shooting scene includes a moving object, at least one frame of target cache image is obtained from at least one frame of cache image, where the matching degree of the at least one frame of target cache image with a current preview image is greater than a preset threshold, and the current preview image may be an image displayed on a shooting preview interface when receiving a first input, that is, when a shooting device moves relative to the shooting scene, a preview image is similar to a picture to be captured, so that a cache image with the best matching degree may be selected, that is, a cache image with a smaller difference from the image content of the current preview image may be obtained, so that a target cache image more meeting a user's requirement may be obtained, what is seen is better achieved, and user experience is improved.
In some embodiments of the present application, in order to further improve the user experience, step 330 may specifically include:
performing image enhancement processing on the obtained at least one frame of target cache image to obtain an enhanced target cache image;
and obtaining a target image based on the enhanced target cache image.
In some embodiments of the present application, after at least one frame of target cache image is acquired, a certain processing may be performed on the at least one frame of target cache image, for example, a certain pre-denoising processing may be performed on the at least one frame of target cache image when it is detected that an environment of a shooting scene is dark. If the dynamic range of the shooting scene is detected to be very high, certain tone processing can be carried out on at least one frame of target cache image.
It should be noted that, when processing at least one frame of target buffer image, a certain photographing speed may be lost, that is, the photographing speed is affected, so that when performing the image enhancement processing, the processing only needs to be performed in some necessary cases (for example, the above-mentioned case where the environment is dark, and the case where the dynamic range is high).
It should be noted that, after obtaining the enhanced at least one frame of target cache image, the enhanced at least one frame of target cache image may be sent to the photographing stream for processing, specifically, a processing flow from the RAW format image to the YUV processing module for photographing may be sent, so as to obtain data (i.e., a target image) in a preset format (for example, in a jpeg format).
In the embodiment of the application, the image enhancement processing is performed on the obtained at least one frame of target cache image, the quality of the at least one frame of target cache image is improved, then the enhanced at least one frame of target cache image is obtained, and then the target image can be obtained based on the enhanced at least one frame of target cache image, so that the satisfactory target image with good quality of a user can be obtained, and the user experience is improved.
According to the shooting method provided by the embodiment of the application, the execution main body can be a shooting device. In the embodiment of the present application, a shooting method executed by a shooting device is taken as an example, and the shooting device provided in the embodiment of the present application is described.
Fig. 4 is a schematic diagram illustrating a configuration of a photographing apparatus according to an exemplary embodiment.
As shown in fig. 4, the photographing apparatus 400 may include:
a first receiving module 410, configured to receive a first input of the shooting preview interface from the user;
an image signal processing module 420, configured to, in response to the first input, obtain at least one frame of target buffer image; obtaining a target image based on the at least one frame of target cache image; when the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to a shooting scene corresponding to the shooting preview interface or motion information of the moving object.
In the embodiment of the application, the image signal processing module responds to the first input of the user to the shooting preview interface received by the first receiving module, and can directly acquire at least one frame of target image frame which is obtained by pre-exposing according to the first exposure parameter before the first input is received, and then can acquire the target image according to the at least one frame of target image frame.
In some embodiments of the present application, in order to further increase the speed of photographing, the above-mentioned photographing apparatus may further include:
the automatic exposure control module is used for determining a second exposure parameter corresponding to the target preview image according to the light intensity information in the shooting scene;
the second acquisition module is used for acquiring the motion information of the shooting device relative to the shooting scene or the motion information of a moving object in the shooting scene;
a motion module for determining a first exposure parameter based on the second exposure parameter and the motion information;
and the control module is used for controlling an image sensor of the shooting device to perform exposure according to the first exposure parameter based on an overlapping exposure mode to obtain at least one frame of cache image, wherein the at least one frame of cache image comprises the target cache image.
In some embodiments of the application, in order to improve user experience, the first obtaining module may be specifically configured to:
under the condition that the shooting device moves relative to a shooting scene, acquiring at least one frame of target cache image from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image and a current preview image is smaller than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
In some embodiments of the present application, to improve user experience, the first obtaining module may be specifically configured to:
under the condition that the shooting scene comprises a moving object, at least one frame of target cache image is obtained from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image with a current preview image is greater than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
In some embodiments of the application, in order to stabilize an effect of the displayed photographed preview image, the sensor module may be further specifically configured to: controlling an image sensor of the shooting device to perform exposure according to the second exposure parameter based on an overlapping exposure mode to obtain a target preview image;
correspondingly, the device further comprises: and the display module is used for displaying the target preview image in the shooting preview interface.
In some embodiments of the present application, the luminance value of the target cache image is equal to the luminance value of the target preview image.
In some embodiments of the present application, in order to further enhance the user experience, the image signal processing module 420 may be specifically configured to;
performing image enhancement processing on the obtained at least one frame of target cache image to obtain an enhanced target cache image;
and obtaining a target image based on the enhanced target cache image.
The shooting device in the embodiment of the present application may be an electronic device, or may be a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be a device other than a terminal. The electronic Device may be, for example, a Mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic Device, a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a wearable Device, an ultra-Mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and may also be a server, a Network Attached Storage (Network Attached Storage, NAS), a personal computer (NAS), a Television (TV), an assistant, a teller machine, a self-service machine, and the like, and the embodiments of the present application are not limited in particular.
The photographing 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 shooting device provided in the embodiment of the present application can implement each process implemented in the method embodiment of fig. 3, and achieve the same technical effect, which is not described herein again to avoid repetition.
Optionally, as shown in fig. 5, an electronic device 500 is further provided in an embodiment of the present application, and includes a processor 501 and a memory 502, where the memory 502 stores a program or an instruction that can be executed on the processor 501, and when the program or the instruction is executed by the processor 501, the steps of the foregoing shooting method embodiment are implemented, and the same technical effects can be achieved, and are not described again here to avoid repetition.
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. 6 is a schematic diagram of a hardware structure of an electronic device implementing the embodiment of the present application.
The electronic device 600 includes, but is not limited to: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.
Those skilled in the art will appreciate that the electronic device 600 may further comprise a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 610 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. 6 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 user input unit 607 is configured to receive a first input of the shooting preview interface from the user;
a processor 610, configured to obtain at least one frame of target buffer image in response to the first input; and obtaining a target image based on the at least one frame of target cache image.
When the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to a shooting scene corresponding to the shooting preview interface or motion information of the moving object. Therefore, by responding to the first input of the user to the shooting preview interface, at least one frame of target image frame obtained in advance according to the first exposure parameter can be directly obtained before the first input is received, and then the target image can be obtained according to the at least one frame of target image frame.
Optionally, the processor 610 is further configured to determine, according to the light intensity information in the shooting scene, a second exposure parameter corresponding to the target preview image; acquiring motion information of the shooting device relative to the shooting scene or motion information of a moving object in the shooting scene; determining a first exposure parameter based on the second exposure parameter and the motion information; and controlling an image sensor of the shooting device to expose according to the first exposure parameter based on an overlapping exposure mode to obtain at least one frame of cache image, wherein the at least one frame of cache image comprises the target cache image.
Therefore, the second exposure parameter corresponding to the target preview image can be determined according to the light intensity information in the shooting scene, and then the first exposure parameter of the moving exposure during shooting of the shooting scene can be calculated based on the second exposure parameter and the motion information (the motion information of the shooting device relative to the shooting scene or the motion information of a moving object in the shooting scene).
Optionally, the processor 610 is further configured to obtain at least one frame of target buffer image from the at least one frame of buffer image when the shooting device moves relative to the shooting scene; and matching degree of the at least one frame of target cache image and a current preview image is smaller than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
Therefore, under the condition that the shooting device moves relative to the shooting scene, at least one frame of target cache image is obtained from at least one frame of cache image, the matching degree of the at least one frame of target cache image with the current preview image is smaller than a preset threshold value, the current preview image can be an image displayed on the shooting preview interface when first input is received, namely under the condition that the shooting device moves relative to the shooting scene, the cache image with the largest matching difference with the current preview image can be selected, and because the shooting scene is changed all the time and the difference between the current preview image and the scene to be captured is considered when the shooting is clicked, the cache image with the larger difference with the image content of the current preview image can be obtained, the target cache frame which meets the requirements of a user better can be obtained, and the experience of the user can be improved.
Optionally, the processor 610 is further configured to, in a case that a moving object is included in the shooting scene, obtain at least one frame of target buffer image from the at least one frame of buffer image; and matching degree of the at least one frame of target cache image with a current preview image is greater than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
Therefore, under the condition that a shooting scene comprises a moving object, at least one frame of target cache image is obtained from at least one frame of cache image, the matching degree of the at least one frame of target cache image with the current preview image is larger than a preset threshold value, the current preview image can be an image displayed on a shooting preview interface when first input is received, namely under the condition that the shooting device moves relative to the shooting scene, the preview image is similar to a picture to be captured, so that the cache image with the best matching degree can be selected, namely the cache image with smaller difference with the image content of the current preview image can be obtained, the target cache frame which is more in line with the requirements of a user can be obtained, what you see is what you get is better, and the user experience is improved.
Optionally, the processor 610 is further configured to control an image sensor of the shooting device to perform exposure according to the second exposure parameter based on an overlapping exposure manner, so as to obtain a target preview image; and displaying the target preview image in the shooting preview interface.
Therefore, the image sensor of the shooting device is controlled to be exposed based on the overlapping exposure mode according to the second exposure parameter to obtain the target preview image, and then the target preview image is displayed in the shooting preview interface.
Optionally, the processor 610 is further configured to perform image enhancement processing on the obtained at least one frame of target cache image to obtain an enhanced target cache image; and obtaining a target image based on the enhanced target cache image.
Therefore, the image enhancement processing is carried out on the obtained at least one frame of target cache image, the quality of the at least one frame of target cache image is improved, then the enhanced at least one frame of target cache image is obtained, and then the target image can be obtained based on the enhanced at least one frame of target cache image, so that the satisfactory target image of the user with good quality can be obtained, and the user experience is improved.
It is to be understood that, in the embodiment of the present application, the input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics Processing Unit 6041 processes image data of a still picture or a video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. A touch panel 6071, also referred to as a touch screen. The touch panel 6071 may include two parts of a touch detection device and a touch controller. Other input devices 6072 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 609 may be used to store software programs as well as various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playing function, an image playing function, etc.), and the like. Further, the memory 609 may include volatile memory or nonvolatile memory, or the memory 609 may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct Memory bus RAM (DRRAM). The memory 609 in the embodiments of the subject application include, but are not limited to, these and any other suitable types of memory.
Processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor, which primarily handles operations involving the operating system, user interface, and applications, etc., and a modem processor, which primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 610.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above shooting method embodiment, 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 computer read only memory ROM, a random access memory RAM, a magnetic or optical disk, and the like.
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 the foregoing shooting method embodiment, and can achieve the same technical effect, and for avoiding repetition, the details are not repeated here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, or a system-on-chip.
Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the foregoing shooting method embodiments, and achieve the same technical effects, and in order to avoid repetition, details are not repeated here.
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. In addition, features described with reference to certain examples may be combined in other examples.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer 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, 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 (16)
1. A shooting method is applied to a shooting device and is characterized by comprising the following steps:
receiving a first input of a user to a shooting preview interface;
responding to the first input, and acquiring at least one frame of target cache image;
obtaining a target image based on the at least one frame of target cache image;
when the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to a shooting scene corresponding to the shooting preview interface or motion information of the moving object.
2. The method of claim 1, wherein prior to the receiving a first user input to the capture preview interface, the method further comprises:
determining a second exposure parameter corresponding to the target preview image according to the light intensity information in the shooting scene;
acquiring motion information of the shooting device relative to the shooting scene or motion information of a moving object in the shooting scene;
determining a first exposure parameter based on the second exposure parameter and the motion information;
and controlling an image sensor of the shooting device to perform exposure according to the first exposure parameter based on an overlapping exposure mode to obtain at least one frame of cache image, wherein the at least one frame of cache image comprises the target cache image.
3. The method of claim 2, wherein obtaining at least one frame of the target buffer image comprises:
under the condition that the shooting device moves relative to a shooting scene, acquiring at least one frame of target cache image from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image and a current preview image is smaller than a preset threshold value, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
4. The method of claim 2, wherein said obtaining at least one frame of the target buffer image comprises:
under the condition that the shooting scene comprises a moving object, acquiring at least one frame of target cache image from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image with a current preview image is greater than a preset threshold value, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
5. The method of claim 2, wherein after determining the first exposure parameter based on the second exposure parameter and the motion information, the method further comprises:
controlling an image sensor of the shooting device to expose according to the second exposure parameter based on an overlapping exposure mode to obtain a target preview image;
and displaying the target preview image in the shooting preview interface.
6. The method of claim 1, wherein the brightness value of the target buffer image is equal to the brightness value of the target preview image.
7. The method according to any one of claims 1-6, wherein said deriving a target image based on said at least one frame of target buffer image comprises:
performing image enhancement processing on the obtained at least one frame of target cache image to obtain an enhanced target cache image;
and obtaining a target image based on the enhanced target cache image.
8. A camera, the camera comprising:
the first receiving module is used for receiving a first input of a user to the shooting preview interface;
the image signal processing module is used for responding to the first input and acquiring at least one frame of target cache image; obtaining a target image based on the at least one frame of target cache image; when the first input is carried out, the shooting device moves relative to a shooting scene, or the shooting scene comprises a moving object; the target cache image is an image obtained by exposure according to a first exposure parameter before the first input is received; the first exposure parameter is determined based on a second exposure parameter and motion information, the second exposure parameter is an exposure parameter corresponding to a target preview image displayed on the shooting preview interface, the target preview image is a preview image with a brightness value meeting a preset condition, and the motion information is motion information of the shooting device relative to the shooting scene or motion information of the moving object.
9. The apparatus of claim 8, further comprising:
the automatic exposure control module is used for determining a second exposure parameter corresponding to the target preview image according to the light intensity information in the shooting scene;
the second acquisition module is used for acquiring the motion information of the shooting device relative to the shooting scene or the motion information of a moving object in the shooting scene;
a motion module for determining a first exposure parameter based on the second exposure parameter and the motion information;
and the control module is used for controlling an image sensor of the shooting device to perform exposure according to the first exposure parameter based on an overlapping exposure mode to obtain at least one frame of cache image, wherein the at least one frame of cache image comprises the target cache image.
10. The apparatus of claim 9, wherein the first obtaining module is specifically configured to:
under the condition that the shooting device moves relative to the shooting scene, at least one frame of target cache image is obtained from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image with a current preview image is greater than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
11. The apparatus of claim 9, wherein the first obtaining module is specifically configured to:
under the condition that the shooting scene comprises a moving object, at least one frame of target cache image is obtained from the at least one frame of cache image;
and matching degree of the at least one frame of target cache image and a current preview image is smaller than a preset threshold, and the current preview image is an image displayed on the shooting preview interface when the first input is received.
12. The apparatus of claim 9, wherein the sensor module is further configured to: controlling an image sensor of the shooting device to perform exposure according to the second exposure parameter based on an overlapping exposure mode to obtain a target preview image;
the device further comprises:
and the display module is used for displaying the target preview image in the shooting preview interface.
13. The apparatus of claim 8, wherein the luminance value of the target buffer image is equal to the luminance value of the target preview image.
14. The apparatus according to any one of claims 8-13, wherein the image signal processing module is specifically configured to:
performing image enhancement processing on the obtained at least one frame of target cache image to obtain an enhanced target cache image;
and obtaining a target image based on the enhanced target cache image.
15. An electronic device, characterized in that it comprises a processor and a memory, said memory storing a program or instructions executable on said processor, said program or instructions, when executed by said processor, implementing the steps of the shooting method according to any one of claims 1 to 7.
16. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by a processor, implement the steps of the photographing method according to any one of claims 1 to 7.
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