CN105827935A - Terminal screenshot method and terminal - Google Patents
Terminal screenshot method and terminal Download PDFInfo
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- CN105827935A CN105827935A CN201510438168.5A CN201510438168A CN105827935A CN 105827935 A CN105827935 A CN 105827935A CN 201510438168 A CN201510438168 A CN 201510438168A CN 105827935 A CN105827935 A CN 105827935A
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Abstract
The present invention provides a terminal screenshot method and terminal. The method comprises a step of obtaining an imaging instruction and controlling the first camera of the terminal to carry out video recording according to the imaging instruction, a step of monitoring whether the preset shooting condition of a second camera is reached or not while the first camera is controlled to carry out video recording, and controlling the second camera to carry out view finding and shooting by using the same view finding range of the first camera when the monitoring result is that the preset shooting condition of a second camera is reached and obtaining the screenshot image of the current recorded video of the camera. According to the scheme, while controlling the first camera to carry out video recording, whether the shooting condition of a second camera is reached or not is monitored, when the shooting condition is reached, the second camera is controlled to carry out shooting, the image same with that in the recorded video at that time is obtained as a screenshot image, and the problem of the poor quality of the image of the screenshot obtained in the video recording process in the prior art is solved.
Description
Technical field
The present invention relates to video interception technical field, particularly relate to method and the terminal of a kind of terminal sectional drawing.
Background technology
At present, mobile phone camera, when shooting video, uses the image data of the frame per second capture camera sensing device of 30FPS to present to user, and operation principle is as follows:
The optical imagery that scenery is generated by camera lens (Lens) projects on imageing sensor upper surface, it is then converted to the signal of telecommunication, data image signal is become after A/D changes, it is then sent through processed in digital signal processing chip (DSP), again by data bus transmission to display, user thus can be made to see the image of shooting.
And in general, human eye can only tell the image of 30FPS, less than this numerical value, just have the sensation of card, so photographic head shooting video uses the image capturing speed of 30FPS, i.e. 1/30 second capture one pictures.After capture picture, being limited to sensor size and DSP disposal ability, mobile phone cannot make enough processed at short notice, and the picture quality therefore captured is much worse than the picture generated under exposal model；And transmitting for convenience and play, the compress modes such as typically employing is H.265, MPEG are compressed, and thus result in further picture quality and decline.
Additionally, it is well known that, in prior art, in mobile phone shooting video, sectional drawing simply extracts a certain two field picture in the video file that current photographic head is preserving and generates JPG picture, saves as sectional drawing image.
But, during due to shooting video, take is the frame per second of 30FPS, even high definition HD shootings such as 4K, 1080P or 720P, the image of each frame also cannot have picture clearly as taking pictures；So, the image that sectional drawing obtains during video capture at present is the most clear, and quality is relatively low.
Summary of the invention
It is an object of the invention to provide method and the terminal of a kind of terminal sectional drawing, solve the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
In order to solve above-mentioned technical problem, the embodiment of the present invention provides a kind of method of terminal sectional drawing, and described method includes:
Obtain shooting instruction, carry out video capture according to the first photographic head that described shooting instruction controls terminal；
While described first photographic head of control carries out video capture, whether the default photographical condition of the second camera of monitoring terminal arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
Present invention also offers a kind of terminal, including the first photographic head and second camera, described terminal also includes:
First processing module, is used for obtaining shooting instruction, controls described first photographic head according to described shooting instruction and carries out video capture；
Second processing module, while carrying out video capture at described first photographic head of control, whether the default photographical condition monitoring described second camera arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
Having the beneficial effect that of the technique scheme of the present invention:
In such scheme, while the method for described terminal sectional drawing is by controlling the first photographic head shooting video, whether the photographical condition of monitoring second camera reaches, when photographical condition reaches, then control second camera to take pictures, obtain the image this moment as shooting video, as sectional drawing image, improve the picture quality of video capture sectional drawing, solve the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram of terminal sectional drawing in the embodiment of the present invention one；
Fig. 2 is the part terminal structure schematic diagram in the embodiment of the present invention two；
Fig. 3 is the method flow schematic diagram of terminal sectional drawing in the embodiment of the present invention three.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to the problem that picture quality that in existing technology, during video capture, sectional drawing obtains is relatively low, it is provided that following solution:
Embodiment one
See Fig. 1, the method for terminal sectional drawing in the embodiment of the present invention one, it is applied to the terminal with two post-positioned pick-up heads, described method includes:
Step 11: obtain shooting instruction, carries out video capture according to the first photographic head that described shooting instruction controls terminal；
Step 12: while described first photographic head of control carries out video capture, whether the default photographical condition of the second camera of monitoring terminal arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
In embodiments of the invention one, while the method for described terminal sectional drawing is by controlling the first photographic head shooting video, whether the photographical condition of monitoring second camera reaches, when photographical condition reaches, then control second camera to take pictures, obtain the image this moment as shooting video, as sectional drawing image, improve the picture quality of video capture sectional drawing, solve the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
It should be noted that, first photographic head and second camera are arranged at front or the reverse side of terminal simultaneously, and the distance the least (the edge line distances generally 1 millimeter to 30 millimeters of two photographic head) that first between photographic head and second camera, second camera uses image that the viewfinder range as the first photographic head obtains it is believed that approximately the same with the image that the first photographic head obtains in the same time.
Wherein, default photographical condition can be sectional drawing instruction, it is possible to for time point (time point or the multiple time points obtained by the time interval preset or the multiple time points directly set).
In view of actual flow process of taking pictures, while described first photographic head of control carries out video capture, described method also includes: controls described second camera and focuses in real time.
Concrete, described acquisition shooting instruction, include according to the step that described shooting instruction control the first photographic head carries out video capture: control described first photographic head live view；The photographed images obtained by live view preserves.
In view of taking pictures, the image obtained there may be the phenomenons such as smear, the described second camera of described control uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the step of the sectional drawing image of described first photographic head current shooting video includes:
Controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, and obtains initial pictures；Judge whether described initial pictures meets pre-conditioned；When judged result is for being, described initial pictures is saved as described sectional drawing image.
Wherein, there is not smear and/or definition relatively high condition pre-conditioned including.
Further, the described second camera of described control uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the step of the sectional drawing image of described first photographic head current shooting video also includes:
When judged result is no, obtaining the first photographic head described in preset time period and find a view multiple photographed images obtained, described preset time period includes the moment that described second camera is taken pictures；Multiple photographed images described and initial pictures are carried out synthesis and obtains final image, described final image is saved as described sectional drawing image.
It should be noted that technical staff may utilize the temporal correlation of video image and multiple photographed images and initial pictures are carried out synthesizing (same area is strengthened) and obtain final image by spatial coherence.
Concrete, the step whether default photographical condition of described monitoring second camera arrives includes: judge whether current time is photo opporunity set in advance, when described current time is photo opporunity set in advance, it is determined that photo opporunity set in advance arrives；Photo opporunity the most set in advance is at least one time point during described first photographic head carries out video capture；
Or judge whether to receive sectional drawing enabled instruction, when receiving sectional drawing enabled instruction, it is determined that photo opporunity set in advance arrives.
Embodiment two
Seeing Fig. 2, the terminal in the embodiment of the present invention two, including the first photographic head and second camera, described terminal also includes:
First processing module 21, is used for obtaining shooting instruction, controls described first photographic head according to described shooting instruction and carries out video capture；
Second processing module 22, while carrying out video capture at described first photographic head of control, whether the default photographical condition monitoring described second camera arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
In embodiments of the invention two, while described terminal is by controlling the first photographic head shooting video, whether the photographical condition of monitoring second camera reaches, when photographical condition reaches, then control second camera to take pictures, obtain the image this moment as shooting video, as sectional drawing image, improve the picture quality of video capture sectional drawing, solve the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
It should be noted that, first photographic head and second camera are arranged at front or the reverse side of terminal simultaneously, and the distance the least (the edge line distances generally 1 millimeter to 30 millimeters of two photographic head) that first between photographic head and second camera, second camera uses image that the viewfinder range as the first photographic head obtains it is believed that approximately the same with the image that the first photographic head obtains in the same time.
Wherein, default photographical condition can be sectional drawing instruction, it is possible to for time point (time point or the multiple time points obtained by the time interval preset or the multiple time points directly set).
In view of actual flow process of taking pictures, described terminal also includes: control module, while carrying out video capture at described processing module described first photographic head of control, controls described second camera and focuses in real time.
Concrete, described first processing module includes: first controls submodule, is used for controlling described first photographic head live view；First preserves submodule, preserves for the photographed images obtained by live view.
In view of taking pictures, the image obtained there may be the phenomenons such as smear, and described second processing module includes:
Second controls submodule, uses the viewfinder range as described first photographic head to carry out finding a view taking pictures for controlling described second camera, obtains initial pictures；Judge submodule, be used for judging whether described initial pictures meets pre-conditioned；Second preserves submodule, for when judged result is for being, described initial pictures saves as described sectional drawing image.
Wherein, there is not smear and/or definition relatively high condition pre-conditioned including.
Further, described second processing module also includes: obtain submodule, for when judged result is no, obtains the first photographic head described in preset time period and finds a view multiple photographed images obtained, and described preset time period includes the moment that described second camera is taken pictures；First processes submodule, obtains final image for multiple photographed images described and initial pictures are carried out synthesis, described final image saves as described sectional drawing image.
It should be noted that technical staff may utilize the temporal correlation of video image and multiple photographed images and initial pictures are carried out synthesizing (same area is strengthened) and obtain final image by spatial coherence.
Concrete, described second processing module includes: second processes submodule, is used for judging whether current time is photo opporunity set in advance, when described current time is photo opporunity set in advance, it is determined that photo opporunity set in advance arrives；Photo opporunity the most set in advance is at least one time point during described first photographic head carries out video capture；
Or judge whether to receive sectional drawing enabled instruction, when receiving sectional drawing enabled instruction, it is determined that photo opporunity set in advance arrives.
Embodiment three
Seeing Fig. 3, in the embodiment of the present invention three, the method for terminal sectional drawing includes:
Step 31: control the first photographic head and carry out video capture, controls second camera and focuses in real time；
Step 32: receive sectional drawing instruction；
Step 33: trigger second camera and take pictures；
Step 34: whether the picture that judges to take pictures is clear, the most then enter step 35, if it is not, then enter step 36；
Step 35: preserving this picture of taking pictures is sectional drawing image；
Step 36: obtain photographed images corresponding to sectional drawing timestamp and first three two field picture of sectional drawing timestamp and rear three two field pictures；
Step 37: seven photographed images utilizing method for motion estimation to combine take pictures picture and acquisition synthesize sectional drawing image clearly, preserve.
As from the foregoing, in order to sectional drawing picture the most clearly can be captured during shooting video, the present invention is based on dual camera (two post-positioned pick-up heads, actual may also include one or more front-facing camera) design, first photographic head and second camera work simultaneously, control the first photographic head when being in shooting state, control second camera and be in real-time focusing state.When user sends sectional drawing instruction, triggering second camera is opened shutter and is captured.So it is obtained with a clear picture taken pictures as sectional drawing image.But, it is thus achieved that picture there may be following two phenomenon:
The most whole scene is enough clear, and main body is without smear.
This situation can directly preserve this picture as sectional drawing image, it is not necessary to carries out after-treatment.
2. focusing mistake, main body has smear.
This situation needs by three frames and the frame corresponding to timestamp before and after acquisition instruction triggers time stamp T imeStamp, in conjunction with the picture generated of taking pictures, the sectional drawing image motion blur phenomenon of picture (the high frame per second characteristic improvement utilizing video capture take pictures) the most clearly after utilizing time of video image and spatial coherence synthesizes.
It should be noted that the pixel value ratio of their same position of image of adjacent two frames is relatively similar, there is the biggest dependency；If rest image, then two frames are the most identical unanimously；If moving image, by certain computing (estimation), they also have the highest dependency.Utilize these dependencys, motion blur phenomenon can be effectively improved, thus improve the picture quality of picture of taking pictures.
Concrete, the key algorithm removing temporal correlation is estimation, finds out the position that a certain piece of present image mates most in previous frame image, many times, it is only necessary to the relative coordinate of position recorded and just can effectively solve；Remove spatial coherence to be realized by dct transform (discrete cosine transform), the data in spatial domain are mapped on frequency domain, then DCT coefficient are carried out quantification treatment.Finally, it is possible to obtaining a composograph more than the sectional drawing image that intercepting video file obtains, this composograph is the sectional drawing image that user to be obtained.
The embodiment of the present invention three is generally speaking, it is simply that by the way of with dual camera, and when needing sectional drawing during the first photographic head shoots video, triggering second camera is opened shutter and taken pictures；If the picture that second camera takes is enough clear, retain this picture as sectional drawing image, otherwise, preserve again, as sectional drawing image after the video of the picture taken by second camera and the shooting of the first photographic head synthesizes enough picture the most clearly corresponding to the image of sectional drawing timestamp and the image (eight pictures altogether) of first three frame of sectional drawing timestamp and rear three frames.
Embodiment four
The initial pictures (picture of taking pictures) obtained of being taken pictures by second camera in above-described embodiment mates with the photographed images that the first photographic head shooting obtains in the same time, delete parts of images different from photographed images in initial pictures (picture of taking pictures), retain parts of images identical with photographed images in initial pictures (picture of taking pictures), and the parts of images remained is preserved as sectional drawing image.
The initial pictures (picture of taking pictures) that the embodiment of the present invention four obtains by taking pictures second camera processes, obtain the sectional drawing image consistent with the photographed images approximation of the first photographic head shooting in the same time, the high-quality demand meeting user, solves the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
In summary, the present invention is in order to promote the picture quality of sectional drawing during video capture, utilize two photographic head to work simultaneously, one photographic head is responsible for shooting video, another photographic head is responsible for taking pictures and is obtained sectional drawing image, solves the problem that picture quality that in prior art, during video capture, sectional drawing obtains is relatively low.
Above-described is the preferred embodiment of the present invention; should be understood that for the ordinary person of the art; without departing under principle premise of the present invention, it is also possible to making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (12)
1. the method for a terminal sectional drawing, it is characterised in that described method includes:
Obtain shooting instruction, carry out video capture according to the first photographic head that described shooting instruction controls terminal；
While described first photographic head of control carries out video capture, whether the default photographical condition of the second camera of monitoring terminal arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
2. the method for claim 1, it is characterised in that while described first photographic head of control carries out video capture, described method also includes:
Control described second camera to focus in real time.
3. the method for claim 1, it is characterised in that described acquisition shooting instruction, the first photographic head controlling terminal according to described shooting instruction carries out the step of video capture and includes:
Control described first photographic head live view；
The photographed images obtained by live view preserves.
4. the method for claim 1, it is characterised in that the described second camera of described control uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the step of the sectional drawing image of described first photographic head current shooting video includes:
Controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, and obtains initial pictures；
Judge whether described initial pictures meets pre-conditioned；
When judged result is for being, described initial pictures is saved as described sectional drawing image.
5. method as claimed in claim 4, it is characterised in that the described second camera of described control uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the step of the sectional drawing image of described first photographic head current shooting video also includes:
When judged result is no, obtaining the first photographic head described in preset time period and find a view multiple photographed images obtained, described preset time period includes the moment that described second camera is taken pictures；
Multiple photographed images described and initial pictures are carried out synthesis and obtains final image, described final image is saved as described sectional drawing image.
6. the method for claim 1, it is characterised in that the step whether default photographical condition of the second camera of described monitoring terminal arrives includes:
Judge whether current time is photo opporunity set in advance, when described current time is photo opporunity set in advance, it is determined that photo opporunity set in advance arrives；Photo opporunity the most set in advance is at least one time point during described first photographic head carries out video capture；
Or judge whether to receive sectional drawing enabled instruction, when receiving sectional drawing enabled instruction, it is determined that photo opporunity set in advance arrives.
7. a terminal, including the first photographic head and second camera, it is characterised in that described terminal also includes:
First processing module, is used for obtaining shooting instruction, controls described first photographic head according to described shooting instruction and carries out video capture；
Second processing module, while carrying out video capture at described first photographic head of control, whether the default photographical condition monitoring described second camera arrives, when monitoring result is for being, controlling described second camera uses the viewfinder range as described first photographic head to carry out finding a view taking pictures, it is thus achieved that the sectional drawing image of described first photographic head current shooting video.
8. terminal as claimed in claim 7, it is characterised in that described terminal also includes:
Control module, while carrying out video capture at described processing module described first photographic head of control, controls described second camera and focuses in real time.
9. terminal as claimed in claim 7, it is characterised in that described first processing module includes:
First controls submodule, is used for controlling described first photographic head live view；
First preserves submodule, preserves for the photographed images obtained by live view.
10. terminal as claimed in claim 7, it is characterised in that described second processing module includes:
Second controls submodule, uses the viewfinder range as described first photographic head to carry out finding a view taking pictures for controlling described second camera, obtains initial pictures；
Judge submodule, be used for judging whether described initial pictures meets pre-conditioned；
Second preserves submodule, for when judged result is for being, described initial pictures saves as described sectional drawing image.
11. terminals as claimed in claim 10, it is characterised in that described second processing module also includes:
Obtaining submodule, for when judged result is no, obtains the first photographic head described in preset time period and find a view multiple photographed images obtained, described preset time period includes the moment that described second camera is taken pictures；
First processes submodule, obtains final image for multiple photographed images described and initial pictures are carried out synthesis, described final image saves as described sectional drawing image.
12. terminals as claimed in claim 7, it is characterised in that described second processing module includes:
Second processes submodule, is used for judging whether current time is photo opporunity set in advance, when described current time is photo opporunity set in advance, it is determined that photo opporunity set in advance arrives；Photo opporunity the most set in advance is at least one time point during described first photographic head carries out video capture；
Or judge whether to receive sectional drawing enabled instruction, when receiving sectional drawing enabled instruction, it is determined that photo opporunity set in advance arrives.
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| CN113810608A (en) * | 2021-09-14 | 2021-12-17 | 荣耀终端有限公司 | Shooting method, electronic equipment and storage medium |
| CN113810608B (en) * | 2021-09-14 | 2022-11-25 | 荣耀终端有限公司 | Shooting method, electronic equipment and storage medium |
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