CN114866700A - Photographing method, system, medium, chip and terminal equipment - Google Patents
Photographing method, system, medium, chip and terminal equipment Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
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- 230000004927 fusion Effects 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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Abstract
The invention discloses a photographing method, a photographing system, a photographing medium, a photographing chip and a terminal device, wherein the method comprises the following steps: receiving a photographing operation acted on a camera application by a user; responding to the photographing operation, and acquiring the occurrence moment of the photographing operation; according to the occurrence time, obtaining at least one frame of original image from a cache space, wherein the cache space stores the original image collected in a set time period before the occurrence time when the camera application is in a preview state; and generating a photographed image according to the at least one frame of original image. The method can shorten the photographing delay time.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a photographing method, a photographing system, a photographing medium, a photographing chip and terminal equipment.
Background
At present, mobile phone photographing has become an indispensable function of mobile phones. The current mechanism for taking pictures by a camera is as follows: the method comprises the steps that a user clicks a photographing key of a camera application, namely after an application layer (APK) issues a photographing request to a kernel layer (kernel), the kernel layer (kernel) reports continuous multi-frame image data subsequently output by an image sensor (sensor) to a Hardware Abstraction Layer (HAL) of the camera after receiving the photographing request, the Hardware Abstraction Layer (HAL) of the camera can call back (callback) a photographing frame and a thumbnail to the application layer (APK), the application layer (APK) can confirm that the photographing is completed according to the received photographing frame or thumbnail, then the photographing key is recovered to be in an enabling state, and the user can take a next photograph. However, as can be seen from the above process, the time taken for exposing one frame of image sensor data is generally 33ms, and if the scene is a multi-frame scene, it takes tens of milliseconds or even hundreds of milliseconds for the kernel layer to report the continuous multi-frame image data subsequently output by the image sensor (sensor), even if the camera application has a fast display function, it takes a long time to take a frame by a single shot. In addition, a time delay is provided from the time when the user clicks the photographing key to the time when the kernel layer (kernel) receives the photographing request and uploads the photographing frame, the time delay is about tens of milliseconds, and if the kernel layer (kernel) reports the image data output by the image sensor based on the exposure of the image sensor at the moment after receiving the photographing request, for a moving object, the imaging seen by the user is not the image at the moment when the photographing key is clicked, that is, the imaging of the camera does not meet what the user sees.
Therefore, there is a need for a photographing method to shorten the time delay of a single photographing and to improve the real-time performance of imaging.
Disclosure of Invention
The embodiment of the invention provides a photographing method, a photographing system, a photographing medium, a photographing chip and terminal equipment, which are used for shortening single photographing time delay and improving imaging instantaneity.
In a first aspect, an embodiment of the present invention provides a photographing method, where the method includes: receiving a photographing operation acted on a camera application by a user; responding to the photographing operation, and acquiring the occurrence moment of the photographing operation; according to the occurrence time, obtaining at least one frame of original image from a cache space, wherein the cache space stores the original image collected in a set time period before the occurrence time when the camera application is in a preview state; and generating a photographed image according to the at least one frame of original image.
The photographing method provided by the embodiment of the invention has the beneficial effects that: on one hand, based on the occurrence moment of the photographing operation, frames are taken from the multi-frame original images of the buffered frames, which is beneficial to shortening the time consumed by single photographing, and on the other hand, the frames selected from the multi-frame original images of the buffered frames are closer to the moment when a user clicks a screen, so that the zero-delay photographing requirement is further met.
In a possible implementation, before receiving a photographing operation performed by a user on a camera application, the method further includes: when the camera application is in a preview state, the image sensor stores the acquired original image into the cache space; and replacing the historical original image in the cache space with the original image acquired in the latest time period in real time. The method can help to store the image data in the cache space in advance and refresh the latest image data cached all the time so as to ensure that the original image acquired in the latest time period is utilized for imaging in real time when the picture is taken.
In another possible implementation, before receiving a photographing operation performed by a user on a camera application, the method further includes: the hardware abstraction layer of the terminal equipment sends the information of the photographing size, the number of cache spaces and the number of frame skipping of each image sensor to the kernel layer of the terminal equipment; and the kernel layer allocates the storage capacity of the cache space according to the information. In the method, the hardware abstraction layer of the terminal device allocates the cache space based on the information, so that the appropriate size of the cache space can be ensured, and the utilization rate of resources is improved.
In other possible implementations, generating a photographed image from the at least one original frame of image includes: fusing at least one frame of original image into a photographed image by using an image algorithm; and coding the photographed image after the image algorithm processing and fusion, and uploading the coded photographed image to a camera application layer.
In another possible implementation scheme, encoding the photographed image processed and fused by the image algorithm, and uploading the encoded photographed image to the camera application layer includes: the hardware abstraction layer of the camera cuts the target image into the size of the thumbnail, and calls a callback function to code the target image and the thumbnail and then transmits the target image and the thumbnail back to the application layer; and the application layer decodes the target image and stores the decoded image into a gallery.
In a second aspect, an embodiment of the present invention further provides a photographing apparatus, which includes a module/unit for executing the method of any one of the possible designs of the first aspect. These modules/units may be implemented by hardware, or by hardware executing corresponding software.
In a third aspect, an embodiment of the present invention provides a chip, where a memory is used to store one or more programs; the one or more programs stored in the memory, when executed by the processor, enable the chip to implement the method of any of the possible designs of the first aspect described above.
In a fourth aspect, an embodiment of the present invention provides a terminal device, which includes a processor and a memory. Wherein the memory is used to store one or more computer programs; the one or more computer programs stored in the memory, when executed by the processor, enable the terminal device to implement the method of any one of the possible designs of the first aspect described above.
In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a computer program, and when the computer program runs on a terminal device, the computer program causes the terminal device to execute any one of the possible design methods of the first aspect.
In a sixth aspect, an embodiment of the present invention further provides a computer program product, which, when running on a terminal, causes the terminal device to execute any one of the possible design methods of any one of the above aspects.
As for the advantageous effects of the above second to sixth aspects, reference may be made to the description in the above first aspect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a photographing method according to an embodiment of the present invention;
fig. 2 is an architecture diagram of an operating system for photographing according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a photographing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention is described below with reference to the drawings in the embodiment of the present invention. In the description of the embodiments of the present invention, the terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present invention, "at least one", "one or more" means one or more than two (including two). The term "and/or" is used to describe an association relationship that associates objects, meaning that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Reference in the specification to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more, but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise. The term "coupled" includes both direct and indirect connections, unless otherwise noted. "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
In the embodiments of the present invention, "exemplary" or "for example" is used to mean serving as an example, instance, or illustration. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of "exemplary" or "e.g.," is intended to present relevant concepts in a concrete fashion.
Fig. 1 shows a schematic flow chart of a photographing method provided by the present invention, where the flow of the method can be executed by a terminal device or a chip in the terminal device, and the method includes the following steps:
s101, receiving a photographing operation acted on a camera application by a user.
It should be noted that before the photographing is performed for the first time, as shown in fig. 2, the hardware abstraction layer of the terminal device may first send the photographing size, the number of buffer spaces, and the frame skipping number information of each image sensor to the kernel layer of the terminal device; and the kernel layer allocates the storage capacity of the cache space according to the information. The storage capacity meets the requirement of photographing cache, and resource waste caused by overlarge distribution capacity can be avoided.
In addition, when the camera application is in a preview state, the image sensor stores the acquired original image into the cache space; and replacing the historical original image in the cache space with the original image acquired in the latest time period in real time. Thus, the image in the buffer space is refreshed all the time, and only the latest few frames of original image data are buffered.
And S102, responding to the photographing operation, and acquiring the occurrence time of the photographing operation.
Generally, when a user clicks a photographing key of a Camera application, the Camera application prepares to acquire an image, and when a photographing request is received by a hardware abstraction layer (Camera HAL) of the Camera, a photographing time stamp of a screen clicked by the user and frame number information are issued to a kernel layer (kernel).
S103, acquiring at least one frame of original image from a cache space according to the occurrence time, wherein the cache space stores the original image acquired in a set time period before the occurrence time when the camera application is in a preview state.
And S104, generating a photographed image according to the at least one frame of original image.
In this embodiment, in a possible implementation manner, the kernel layer (kernel) fetches a specified amount of image data from the buffer space according to a photographing timestamp issued by a hardware abstraction layer (Hal) applied by the camera according to the timestamp, and reports the fetched image data to the hardware abstraction layer (Hal), and the hardware abstraction layer (Hal) fuses at least one frame of original image into a photographed image by using an image algorithm; and coding the photographed image after the image algorithm processing and fusion, and uploading the coded photographed image to a camera application layer. Preferably, the hardware abstraction layer of the camera can also cut the target image into the size of the thumbnail, and call a callback function to transmit the target image and the thumbnail together to the application layer after being encoded; and the application layer decodes the target image and stores the decoded image into a gallery.
As can be seen from the above method embodiments, the time delay for a single shot is short, and it is ensured that what the user sees is what he gets. Specifically, on one hand, based on the occurrence time of the photographing operation, frames are extracted from the multi-frame original images of the buffered frames, which is beneficial to shortening the time consumed by single photographing, and on the other hand, the frames selected from the multi-frame original images of the buffered frames are closer to the time when the user clicks the screen, so that the zero-delay photographing requirement can be met even in a dynamic scene.
In some embodiments of the present application, an embodiment of the present invention further discloses a photographing apparatus, as shown in fig. 3, which is configured to implement the method described in the above method embodiments, and includes: a receiving unit 301, configured to receive a photographing operation performed by a user on a camera application; an obtaining unit 302, configured to obtain an occurrence time of the photographing operation in response to the photographing operation; and acquiring at least one frame of original image from a buffer space according to the occurrence time, wherein the buffer space stores the original image acquired in a set time period before the occurrence time when the camera application is in a preview state. The generating unit 303 is configured to generate a photographed image according to the at least one frame of original image.
In a possible embodiment, when the camera application is in a preview state, storing the acquired original image in the cache space through an image sensor; and replacing the historical original image in the cache space with the original image acquired in the latest time period in real time.
In another possible embodiment, the apparatus further comprises a pre-allocation unit for:
before the receiving unit receives the photographing operation acted on the camera application by the user, the photographing size, the number of the buffer spaces and the frame skipping number information of each image sensor are obtained, and the storage capacity of the buffer spaces is distributed according to the information.
In a possible embodiment, the generating unit generates the photographed image according to the at least one frame of original image, and is specifically configured to: fusing at least one frame of original image into a photographed image by using an image algorithm; and coding the photographed image after the image algorithm processing and fusion, and uploading the coded photographed image to a camera application layer.
In another possible embodiment, the generating unit encodes the photographed image after the image algorithm processing and fusion, and uploads the encoded photographed image to the camera application layer, specifically configured to:
cutting the target image into the size of a thumbnail, calling a callback function to code the target image and the thumbnail and then transmitting the target image and the thumbnail back to an application layer; so that the application layer decodes the target image and stores the decoded image to a gallery.
All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
In other embodiments of the present application, an embodiment of the present invention discloses an electronic device, which may include, as shown in fig. 4: one or more processors 401; a memory 402; a display 403; one or more application programs (not shown); and one or more computer programs 404, which may be connected via one or more communication buses 405. Wherein the one or more computer programs 404 are stored in the memory 402 and configured to be executed by the one or more processors 401, the one or more computer programs 404 comprising instructions which may be used to perform the steps as in fig. 1 and the corresponding embodiments.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.
Each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.
In addition, the embodiment of the present invention further provides a chip, which can be integrated in a terminal device to execute the method described in any of the above method embodiments.
The embodiment of the invention also provides a readable medium, wherein a program is stored on the readable medium, and the program realizes the method of any one of the method embodiments when being executed by a chip or a terminal device.
The embodiment of the invention also provides a program product, and the program product realizes the method of any method embodiment when being executed by a chip.
The above description is only a specific implementation of the embodiments of the present invention, but the scope of the embodiments of the present invention is not limited thereto, and any changes or substitutions within the technical scope disclosed by the embodiments of the present invention should be covered within the scope of the embodiments of the present invention. Therefore, the protection scope of the embodiments of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. A photographing method is applied to terminal equipment and is characterized by comprising the following steps:
receiving a photographing operation acted on a camera application by a user;
responding to the photographing operation, and acquiring the occurrence moment of the photographing operation;
according to the occurrence time, obtaining at least one frame of original image from a cache space, wherein the cache space stores the original image collected in a set time period before the occurrence time when the camera application is in a preview state;
and generating a photographed image according to the at least one frame of original image.
2. The method of claim 1, wherein prior to receiving a photographing operation by a user on the camera application, further comprising:
when the camera application is in a preview state, the image sensor stores the acquired original image into the cache space; and replacing the historical original image in the cache space with the original image acquired in the latest time period in real time.
3. The method of claim 1 or 2, wherein before receiving the photographing operation of the user on the camera application, further comprising:
the hardware abstraction layer of the terminal equipment sends the information of the photographing size, the number of cache spaces and the number of frame skipping of each image sensor to the kernel layer of the terminal equipment;
and the kernel layer allocates the storage capacity of the cache space according to the information.
4. The method of claim 1, wherein generating a photographed image from the at least one original frame of image comprises:
fusing at least one frame of original image into a photographed image by using an image algorithm;
and coding the photographed image after the image algorithm processing and fusion, and uploading the coded photographed image to a camera application layer.
5. The method of claim 4, wherein encoding the captured image after the fusion of the image algorithm processing and uploading the encoded captured image to the camera application layer comprises:
the hardware abstraction layer of the camera cuts the target image into the size of the thumbnail, and calls a callback function to code the target image and the thumbnail and then transmits the target image and the thumbnail back to the application layer;
and the application layer decodes the target image and stores the decoded image into a gallery.
6. A photographing apparatus, comprising:
the receiving unit is used for receiving photographing operation acted on the camera application by a user;
the acquisition unit is used for responding to the photographing operation and acquiring the occurrence moment of the photographing operation; according to the occurrence time, obtaining at least one frame of original image from a cache space, wherein the cache space stores the original image collected in a set time period before the occurrence time when the camera application is in a preview state;
and the generating unit is used for generating a photographed image according to the at least one frame of original image.
7. The apparatus of claim 6, wherein before receiving a photographing operation by a user on the camera application, the obtaining unit is further configured to:
when the camera application is in a preview state, storing an acquired original image into the cache space through an image sensor; and replacing the historical original image in the cache space with the original image acquired in the latest time period in real time.
8. The apparatus of claim 6 or 7, further comprising: a pre-allocation unit to:
before the receiving unit receives the photographing operation acted on the camera application by the user, the photographing size, the number of the buffer spaces and the frame skipping number information of each image sensor are obtained, and the storage capacity of the buffer spaces is distributed according to the information.
9. The apparatus according to claim 6, wherein the generating unit generates the photographed image according to the at least one original frame of image, and is specifically configured to: fusing at least one frame of original image into a photographed image by using an image algorithm; and coding the photographed image after the image algorithm processing and fusion, and uploading the coded photographed image to a camera application layer.
10. The apparatus according to claim 9, wherein the generating unit encodes the photographed image after the image algorithm processing and fusion, and uploads the encoded photographed image to the camera application layer, specifically configured to:
cutting the target image into the size of a thumbnail, calling a callback function to code the target image and the thumbnail and then transmitting the target image and the thumbnail back to an application layer; so that the application layer decodes the target image and stores the decoded image to a gallery.
11. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of any one of claims 1 to 5.
12. A chip for performing the method of any one of claims 1 to 5.
13. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, the computer program, when executed by the processor, causing the processor to carry out the method of any one of claims 1 to 5.
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| CN202210602739.4A CN114866700A (en) | 2022-05-30 | 2022-05-30 | Photographing method, system, medium, chip and terminal equipment |
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| CN202210602739.4A CN114866700A (en) | 2022-05-30 | 2022-05-30 | Photographing method, system, medium, chip and terminal equipment |
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