CN105657246A - Time-lapse photographing method and apparatus - Google Patents
Time-lapse photographing method and apparatus Download PDFInfo
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- CN105657246A CN105657246A CN201510778857.0A CN201510778857A CN105657246A CN 105657246 A CN105657246 A CN 105657246A CN 201510778857 A CN201510778857 A CN 201510778857A CN 105657246 A CN105657246 A CN 105657246A
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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
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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
- H04N23/62—Control of parameters via user interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/915—Television signal processing therefor for field- or frame-skip recording or reproducing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
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- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Television Signal Processing For Recording (AREA)
- Studio Devices (AREA)
Abstract
The present invention relates to a time-lapse photographing method and apparatus. The method comprises the steps of recording a video, and forming a corresponding frame image time sequence of the video; if the total play time of a video recorded till now achieves n times of predetermined play time, combining a first frame image time sequence and a second frame image time sequence that are formed by recording till now, and extracting one frame from every n frames according to the time sequence so as to form a new second frame image time sequence; in addition, recording a video according to 1/n original frame extraction record proportion after the moment, so as to form a new first frame image time sequence; and responding to a trigger operation of stopping recording the video, and combining, according to the time sequence, the first frame image time sequence and the second frame image time sequence that are formed by now so as to form a play video. According to the method, after any duration of video is recorded, the video of designated play duration can be generated, and the video is not limited by recording duration.
Description
Technical field
The present invention relates to technical field of image processing, particularly relate to a kind of time-lapse photography method and device.
Background technology
Currently, the method for some time-lapse photography is that when adopting fixing, length is recorded, and carries out video by fixed proportion in recording process and take out frame, then by take out two field picture temporally sequence play formed fixing time length video. Such as, by long when during a fixing recording, the video of length generates 1/4, when 1/8 long, when 1/16 during the short-movie of length, corresponding 1/4 need to be adopted in recording process, the frame ratio of taking out of 1/8,1/16 carries out video and takes out frame, then by take out two field picture temporally sequence play formed corresponding playing duration video.
But, if user wants to record a segment length and reaches the video that the time length of one hour even several hours do not fix and (such as record a process that early morning, the flowers are in blossom, or record the process that a setting sun sets), and wish when fixing in length, as played within the time of one minute, so adopt existing time-lapse photography technology then cannot realize.
Summary of the invention
Time-lapse photography method provided by the invention and device, can record any time length video after, can generate specify playing duration video, no longer stick to the restriction of length during recording.
For achieving the above object, the present invention provides a kind of time-lapse photography method, comprising: recorded video, and forms the corresponding two field picture time series of video; If reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form new described first temporal sequence of images; Further, after this moment during recorded video with 1/n original take out frame record ratio recorded video, form new described 2nd two field picture time series, described n be greater than 0 any integer; In response to the triggering operation stopping recorded video, temporally sequentially merge to be formed with described 2nd two field picture time series by described first temporal sequence of images currently formed and play video.
Present invention also offers a kind of time-lapse photography device, comprising: video record module, for recorded video, and form the corresponding two field picture time series of video;First image procossing module, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form new described first temporal sequence of images; 2nd image procossing module, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record ratio recorded video with the original frame of taking out of 1/n during recorded video after this moment, form new described 2nd two field picture time series, described n be greater than 0 any integer; Broadcasting video forms module, in response to the triggering operation stopping recorded video, temporally sequentially merging to be formed with described 2nd two field picture time series by described first temporal sequence of images currently formed and play video.
Time-lapse photography method provided by the invention and device, be divided into two portions by the two field picture time series that recorded video is formed, the first two field picture time series being respectively recording and storing and the 2nd two field picture time series currently recorded; Total reproduction time of recorded video corresponding after the two merges reaches n doubly predetermined reproduction time, then two two field picture time serieses are merged, and store after taking out frame and form the first new two field picture time series, simultaneously, record ratio recorded video with the original frame of taking out of 1/n during recorded video after this moment, form the 2nd new two field picture time series; Thus so that the two field picture time series stored is recorded than forming video with identical frame of taking out with the two field picture time series recording formation, circulates according to this. Finally, after recording terminates, temporally sequentially merge to be formed with the 2nd two field picture time series by the first two field picture time series and play video. The reproduction time of this broadcasting video is specified at predetermined reproduction time and n doubly between predetermined reproduction time.
Accompanying drawing explanation
Fig. 1 is the schema of a time-lapse photography method embodiment provided by the invention;
Fig. 2 is two field picture provided by the invention process logic sample one schematic diagram;
Fig. 3 is two field picture provided by the invention process logic sample two consciousness figure;
Fig. 4 is the structure block diagram of a time-lapse photography device embodiment provided by the invention;
Fig. 5 is the structure block diagram of time-lapse photography another embodiment of device provided by the invention.
Description of reference numerals: 410-video record module, 420-first image procossing module, 430-the 2nd image procossing module, 440-play video and form module, 450-image extraction module, 451-ratio calculating unit, 452-image contract unit.
Embodiment
The embodiment of the present invention, by the two field picture time series of recording and storing and the two field picture time series synchronization recorded being taken out frame process, and the prolongation along with recording time, correspondence is taken out frame recording ratio and is constantly increased, and puts time range to ensure the reproduction time of the video of final recording in the broadcasting specified.
Below in conjunction with accompanying drawing, the time-lapse photography method in the embodiment of the present invention and device are described in detail.
Embodiment one
Fig. 1 is the schema of a time-lapse photography method embodiment provided by the invention, the executive agent of the method can for be configured with camera function such as the terminal such as mobile phone, ipad, or integrated device on these terminals or chip. As shown in Figure 1, for terminal, this time-lapse photography method comprises the steps:
S110, recorded video, and form the corresponding two field picture time series of video.
Existing terminal such as mobile phone, ipad etc. are integrated with camera function, it is possible to recorded video. The video mainly recorded for these terminals in the present embodiment carries out follow-up process, and the concrete technology adopted for kind and the recorded video of terminal is not construed as limiting.
After terminal recorded video, the two field picture of corresponding video can be obtained, these two field pictures be sorted by the time sequence recorded, namely obtains the time series about two field picture.
S120, if reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form the 2nd new two field picture time series.
Meanwhile, if reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then the content of S130 can also be performed after this moment.
S130, records ratio recorded video with the original frame of taking out of 1/n during recorded video after this moment, forms the first new two field picture time series. Wherein, said n be greater than 0 any integer.
Below for the two field picture process logic shown in Fig. 2, step S120 and S130 is specifically described. As shown in Figure 2, it is assumed that want to record the video that a reproduction time is about 1 minute. Can predetermined reproduction time being then 1 minute, n value be 2 be handled as follows.
First, as shown in figure (2.1), after starting recorded video, when length is less than 2 minutes when recording a video, then continues to get the original two field picture of video recording, and it is deposited in disk, form the first initial two field picture time series. Record the time series position of each frame by a mapping table for each two field picture.
Such as figure (2.2), when being grown up in 2 minutes when recording a video, then can store the original two field picture of ensuing recording by a newly-built file, and during often to obtain two frames, lose a frame, store a frame, namely 1/2 take out frame recording than preserving, thus form the first new two field picture time series. It is a new file that the first two field picture time series (two field picture recorded for 0��2 minute) stored before carries out the mode that every two frames take out a frame separately deposits in another thread simultaneously, and the new two field picture time series of corresponding formation is as the 2nd two field picture time series. Now, the mode that the video recorded is 2 speeds stores, and the file stored before also becomes the new video files of 2 speeds, and during video playback, length is 1 minute.
Such as figure (2.3), when video record reaches 4 minutes, then a newly-built file stores the original two field picture of next recording again, and during often to obtain four frames, lose three frames, store a frame, namely 1/4 take out frame record than (on 1/2 one take out frame record than) preserve. Simultaneously to the two field picture time series (the 2nd two field picture time series stored and the first two field picture time series just recorded that store two files before in another thread, namely in 0��4 minute record two field picture) again every two frames take out a frame and be stored as a new file, form the 2nd new two field picture time series. The mode that the video now recorded is 4 speeds stores, and the file stored before also becomes the new file of 4 speeds.
Next, when video record reaches 8 minutes, then a newly-built file stores the original two field picture of next recording, and during often to obtain eight frames, lose seven frames, store a frame, namely 1/8 take out frame record than (on 1/2 one take out frame record than) preserve.Simultaneously to the two field picture time series (the 2nd two field picture time series stored and the first two field picture time series just recorded that store two files before in another thread, namely in 0��8 minute record two field picture) again every two frames take out a frame and be stored as a new file, form the 2nd new two field picture time series. The mode that the video now recorded is 8 speeds stores, and the file stored before also becomes the new file of 8 speeds.
Continuing successively, so no matter recording and storing is how long, then be stored the file of a minute, i.e. a 2nd two field picture time series all the time, with one just at the file being less than a minute of recording and storing, i.e. and the first two field picture time series.
S140, in response to the triggering operation stopping recorded video, temporally sequentially merges to be formed with the 2nd two field picture time series by the first temporal sequence of images currently formed and plays video.
For Fig. 2, as shown in Figure 3, after stopping video recording, temporally sequentially merge by the first two field picture time series currently formed and the 2nd two field picture time series, form complete broadcasting video, and the formulation of video playback time is 12 two minutes.
Further, as shown in figures 1 and 3, in order to improve the precision of final video reproduction time, also can continue to perform following steps after S140:
Extract and play part two field picture formation the 3rd two field picture time series in two field picture time series corresponding to video; The reproduction time of the broadcasting video that the 3rd two field picture time series is formed is predetermined reproduction time.
Certainly, the broadcasting video that the 3rd two field picture time series is formed is the broadcasting video of final formation. Here about when forming the 3rd two field picture time series, the extraction mode playing original two field picture corresponding to video is not limited. Such as, in order to ensure to play the even continuity of video content, the part two field picture in original two field picture time series can be extracted uniformly.
Specifically, the ratio m of video playback time corresponding to the broadcasting video of current formation with initial predetermined reproduction time can first be calculated; Then, form the 3rd two field picture time series by two field picture time series corresponding for broadcasting the video temporally every m frame of order extract a frame.
It show example with Fig. 2, if the video having stored 1 point of two field picture time series of 40 seconds is (wherein, first two field picture time series is 40 seconds, 2nd two field picture time series is 1 minute), then doing an equal proportion frame losing, make final video reproduction time be one minute, so corresponding m value is 5/3,3 frames (losing middle 2 frames) can be extracted store by every 5 frames so that long during video playback corresponding to final two field picture time series about equal 1 minute.
The time-lapse photography method that the embodiment of the present invention provides, by the two field picture time series of recording and storing and the two field picture time series synchronization recorded being taken out frame process, and the prolongation along with recording time, correspondence is taken out frame recording ratio and is constantly increased, and puts time range to ensure the reproduction time of the video of final recording in the broadcasting specified.
On this basis, the present embodiment is in order to improve the precision of the broadcasting video playback time of final formation, after by the stored first temporal sequence of images, temporally order merges with the 2nd two field picture time series currently stored, two field picture time series after being combined carries out taking out frame process, takes out video playback time controling corresponding to the two field picture time series after frame process the most at last at predetermined reproduction time.
Further; record ratio recorded video according to constant frame of taking out due to prior art, usually can arrange the interval of getting frame and final record time long, final record time length in fact not necessarily; but owing to considering the capacity problem of storer, generally progress row during recording can be arranged. And in this scheme, owing to being take out frame in the change of recording time ladder to record ratio recorded video so that the reproduction time of final video is always fixing, therefore do not worry that in recording process, storer overflows problem.
Embodiment two
As shown in Figure 4, it is the structure block diagram of a time-lapse photography device embodiment provided by the invention, can be used for the method steps performed as shown in Figure 1, comprising:
Video record module 410, for recorded video, and forms the corresponding two field picture time series of video; First image procossing module 420, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form the 2nd new two field picture time series; 2nd image procossing module 430, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record ratio recorded video with the original frame of taking out of 1/n during recorded video after this moment, form the first new two field picture time series, described n be greater than 0 any integer; Broadcasting video forms module 440, in response to the triggering operation stopping recorded video, temporally sequentially merging to be formed with the 2nd two field picture time series by the first two field picture time series currently formed and play video.
On this basis, as shown in Figure 5, above-mentioned time-lapse photography device also can comprise: image extraction module 450, plays part two field picture formation the 3rd two field picture time series in two field picture time series corresponding to video for extracting; The reproduction time of the broadcasting video that described 3rd two field picture time series is formed is predetermined reproduction time.
Further, above-mentioned image extraction module 450 can comprise: ratio calculates unit 451, for calculating the ratio m playing video playback time corresponding to video and described predetermined reproduction time; Image contract unit 452, for forming the 3rd two field picture time series by extracting a frame in two field picture time series corresponding for broadcasting the video temporally every m frame of order.
Further, said n value can be 2.
The time-lapse photography device that the embodiment of the present invention provides, by the two field picture time series of recording and storing and the two field picture time series synchronization recorded being taken out frame process, and the prolongation along with recording time, correspondence is taken out frame recording ratio and is constantly increased, and puts time range to ensure the reproduction time of the video of final recording in the broadcasting specified.
On this basis, the present embodiment is in order to improve the precision of the broadcasting video playback time of final formation, after by the stored first temporal sequence of images, temporally order merges with the 2nd two field picture time series currently stored, two field picture time series after being combined carries out taking out frame process, takes out video playback time controling corresponding to the two field picture time series after frame process the most at last at predetermined reproduction time.
The above; it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. a time-lapse photography method, it is characterised in that, described method comprises:
Recorded video, and form the corresponding two field picture time series of video;
If reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form new described 2nd two field picture time series; Further, after this moment during recorded video with 1/n original take out frame record ratio recorded video, form new described first two field picture time series, described n be greater than 0 any integer;
In response to the triggering operation stopping recorded video, temporally sequentially merge to be formed with described 2nd two field picture time series by described first temporal sequence of images currently formed and play video.
2. method according to claim 1, it is characterised in that, described described first temporal sequence of images currently formed and described 2nd two field picture time series temporally sequentially merging after video is play in formation also comprises:
Extract part two field picture in two field picture time series corresponding to described broadcasting video and form the 3rd two field picture time series; The reproduction time of the broadcasting video that described 3rd two field picture time series is formed is described predetermined reproduction time.
3. method according to claim 2, it is characterised in that, in the two field picture time series that described extraction described broadcasting video is corresponding, part two field picture formation the 3rd two field picture time series comprises:
Calculate the ratio m of video playback time corresponding to described broadcasting video and described predetermined reproduction time;
Described 3rd two field picture time series is formed by two field picture time series corresponding for described broadcasting the video temporally every m frame of order extract a frame.
4. method according to any one of claim 1-3, it is characterised in that, described n value is 2.
5. a time-lapse photography device, it is characterised in that, described device comprises:
Video record module, for recorded video, and forms the corresponding two field picture time series of video;
First image procossing module, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record the first two field picture time series formed and the 2nd two field picture time series merges by by current, and temporally the every n frame of order extracts a frame and form new described 2nd two field picture time series;
2nd image procossing module, if for reaching n doubly predetermined reproduction time by total reproduction time of current recorded video, then record ratio recorded video with the original frame of taking out of 1/n during recorded video after this moment, form new described first two field picture time series, described n be greater than 0 any integer;
Broadcasting video forms module, in response to the triggering operation stopping recorded video, temporally sequentially merging to be formed with described 2nd two field picture time series by the described first two field picture time series currently formed and play video.
6. method according to claim 5, it is characterised in that, described device also comprises:
Image extraction module, forms the 3rd two field picture time series for extracting part two field picture in two field picture time series corresponding to described broadcasting video; The reproduction time of the broadcasting video that described 3rd two field picture time series is formed is described predetermined reproduction time.
7. method according to claim 6, it is characterised in that, described image extraction module comprises:
Ratio calculates unit, for calculating the ratio m of video playback time corresponding to described broadcasting video and described predetermined reproduction time;
Image contract unit, for forming described 3rd two field picture time series by extracting a frame in two field picture time series corresponding for described broadcasting the video temporally every m frame of order.
8. method according to claim 6, it is characterised in that, described n value is 2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778857.0A CN105657246A (en) | 2015-11-15 | 2015-11-15 | Time-lapse photographing method and apparatus |
| PCT/CN2016/089041 WO2017080241A1 (en) | 2015-11-15 | 2016-07-07 | Time-lapse photographing method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510778857.0A CN105657246A (en) | 2015-11-15 | 2015-11-15 | Time-lapse photographing method and apparatus |
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| CN105657246A true CN105657246A (en) | 2016-06-08 |
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| CN201510778857.0A Pending CN105657246A (en) | 2015-11-15 | 2015-11-15 | Time-lapse photographing method and apparatus |
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| WO (1) | WO2017080241A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017080241A1 (en) * | 2015-11-15 | 2017-05-18 | 乐视控股（北京）有限公司 | Time-lapse photographing method and device |
| CN113747080A (en) * | 2021-09-29 | 2021-12-03 | 维沃移动通信（杭州）有限公司 | Shooting preview method, shooting preview device, electronic equipment and medium |
| CN114845150A (en) * | 2022-04-28 | 2022-08-02 | 陕西科技大学 | Display screen multi-video display synchronization system, method, equipment and storage medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112448974B (en) * | 2019-08-30 | 2023-10-17 | 北京嗨动视觉科技有限公司 | Network interaction method, device and system and image processing system |
| CN113596339B (en) * | 2021-09-07 | 2023-05-05 | 杭州海康威视数字技术股份有限公司 | Method and device for generating time-lapse photographic file and electronic equipment |
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| CN105657246A (en) * | 2015-11-15 | 2016-06-08 | 乐视移动智能信息技术（北京）有限公司 | Time-lapse photographing method and apparatus |
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- 2015-11-15 CN CN201510778857.0A patent/CN105657246A/en active Pending
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| CN101674444A (en) * | 2009-10-15 | 2010-03-17 | 杭州华三通信技术有限公司 | Storage method of video data, system and encoder thereof |
| US20140105564A1 (en) * | 2012-10-16 | 2014-04-17 | Amanjyot Singh JOHAR | Creating time lapse video in real-time |
| AU2015100630A4 (en) * | 2014-05-30 | 2015-06-11 | Apple Inc. | System and methods for time lapse video acquisition and compression |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017080241A1 (en) * | 2015-11-15 | 2017-05-18 | 乐视控股（北京）有限公司 | Time-lapse photographing method and device |
| CN113747080A (en) * | 2021-09-29 | 2021-12-03 | 维沃移动通信（杭州）有限公司 | Shooting preview method, shooting preview device, electronic equipment and medium |
| CN113747080B (en) * | 2021-09-29 | 2024-03-22 | 维沃移动通信（杭州）有限公司 | Shooting preview method, shooting preview device, electronic equipment and medium |
| CN114845150A (en) * | 2022-04-28 | 2022-08-02 | 陕西科技大学 | Display screen multi-video display synchronization system, method, equipment and storage medium |
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| WO2017080241A1 (en) | 2017-05-18 |
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Application publication date: 20160608 |