CN105872380A - Video image acquiring method and device - Google Patents
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- CN105872380A CN105872380A CN201610266598.8A CN201610266598A CN105872380A CN 105872380 A CN105872380 A CN 105872380A CN 201610266598 A CN201610266598 A CN 201610266598A CN 105872380 A CN105872380 A CN 105872380A
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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
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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Abstract
The invention discloses a video image acquiring method and device. The method comprises the steps of calculating required acquisition time interval according to the acquisition frame rate required this time, calculating cumulative time error according to actual acquisition time interval and the required acquisition time interval when video images are acquired based on the actual acquisition time interval, and adjusting the actual acquisition time interval when the cumulative time error exceeds a preset allowable error threshold value. By adjusting the actual acquisition time interval, the error of the video image acquisition frame rate can be reduced.
Description
Technical field
The present embodiments relate to terminal unit technical field, particularly relate to a kind of video image acquisition method and device.
Background technology
In order to obtain the information comprised in video, generally require by video image acquisition technology, collection video comprises
Multiple image, in order to the follow-up image to collecting carries out graphical analysis, thus gets the information comprised in video.
At present, when carrying out video image acquisition, acquisition frame rate can be set according to collection demand, then according to the institute arranged
State acquisition frame rate, determine that corresponding acquisition time interval realizes the collection of video image.Such as, acquisition frame rate may be configured as
Gathering 25 two field pictures each second, in this case, acquisition time is spaced apart 40ms, say, that gather at interval of 40ms
One two field picture, can realize the collection of video image according to the acquisition frame rate arranged.
But, inventor finds in the research process of the application, and the precision of the intervalometer by arranging in terminal unit limits
System, cannot be accurately obtained the interval time gathering image in some cases, thus cause the amount of images collected to occur
Error, it is impossible to meet demand.Such as, if desired gathering 30 two field pictures each second, the most calculated acquisition time is spaced
For unlimited decimal, and the timing accuracy of current timer may be only accurate to 1ms, therefore carries out video figure according to prior art
During the collection of picture, there is error between being spaced in actual acquisition time interval and calculated acquisition time, causes per second
The number of image frames collected is indefinite, so that error occurs in the acquisition frame rate of image, it is impossible to meet demand.
Summary of the invention
For overcoming problem present in correlation technique, the embodiment of the present invention provides a kind of video image acquisition method and device.
In order to solve above-mentioned technical problem, the embodiment of the invention discloses following technical scheme:
First aspect according to embodiments of the present invention, it is provided that a kind of video image acquisition method, including:
The acquisition frame rate needed according to this, calculates required acquisition time interval；
When gathering video image by actual acquisition time interval, according to described actual acquisition time interval and required collection
Time interval calculates accumulated time error；
When described accumulated time error exceedes default error permission threshold value, adjust described actual acquisition time interval.
Preferably, described according to described actual acquisition time interval with required acquisition time interval calculation accumulated time error packet
Include:
Calculate the time difference between described actual acquisition time interval and described required acquisition time interval, determine the described time
Difference is this time error and stores；
According to the time error stored before and this time error described, calculate and obtain described accumulated time error.
Preferably, described when described accumulated time error exceed default error allow threshold value time, adjust described actual acquisition
Time interval, including:
If described required acquisition time interval is more than described actual acquisition time interval, heighten between the described actual acquisition time
Every；
If described required acquisition time interval is less than described actual acquisition time interval, turn down between the described actual acquisition time
Every.
Preferably, when heightening described actual acquisition time interval or turning down described actual acquisition time interval, according to timing
The timing accuracy of device, determines adjustment amplitude.
Preferably, also include:
Set the actual acquisition time interval before not adjusting as initial acquisition time interval, adjust the described initial acquisition time
Behind interval, continue to calculate accumulated time error, and allow threshold in described accumulated time error less than the described error preset
During value, actual acquisition time interval is adjusted to described initial acquisition time interval.
Second aspect according to embodiments of the present invention, it is provided that a kind of video image acquisition device, including:
Time interval computing module, for the acquisition frame rate needed according to this, calculates required acquisition time interval；
Error calculating module, for when gathering video image by actual acquisition time interval, according to described actual acquisition
Time interval and required acquisition time interval calculation accumulated time error；
Time interval adjusting module, for when described accumulated time error exceedes default error permission threshold value, adjusting institute
State actual acquisition time interval.
Preferably, described error calculating module includes:
Time difference calculating unit, for calculating between described actual acquisition time interval and described required acquisition time interval
Time difference, determines that described time difference is this time error and stores；
Accumulated time error determines unit, for according to the time error that stores before and this time error described, meter
Calculate and obtain described accumulated time error.
Preferably, described time interval adjusting module includes:
First adjustment unit, if for described required acquisition time interval more than described actual acquisition time interval, heightening institute
State actual acquisition time interval；
Second adjustment unit, if for described required acquisition time interval less than described actual acquisition time interval, turning down institute
State actual acquisition time interval.
Preferably, described time interval adjusting module is being heightened described actual acquisition time interval or is being turned down described actual acquisition
During time interval, according to the timing accuracy of intervalometer, determine adjustment amplitude.
Preferably, the actual acquisition time interval before not adjusting is set as initial acquisition time interval, described Error Calculation mould
Block is additionally operable to after adjusting described initial acquisition time interval, continues to calculate accumulated time error；
Described time interval adjusting module is additionally operable to allow threshold in described accumulated time error less than the described error preset
During value, actual acquisition time interval is adjusted to described initial acquisition time interval.
The technical scheme that embodiments of the invention provide can include following beneficial effect:
When being carried out the collection of video image by video image acquisition method and device disclosed in the present application, calculate adopting of this
The required acquisition time interval that collection demand is corresponding, and tire out according to actual acquisition time interval and required acquisition time interval calculation
Long-pending time error, when described accumulated time error exceedes default error permission threshold value, adjusts the described actual acquisition time
Interval.By the adjustment to actual acquisition time interval, it is possible to reduce the error of the acquisition frame rate of video image.
It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe, can not
Limit the present invention.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention
Example, and for explaining the principle of the present invention together with description.
Fig. 1 is the workflow signal according to a kind of video image acquisition method shown in the present invention one exemplary embodiment
Figure；
Fig. 2 is the structural representation according to a kind of video image acquisition device shown in the present invention one exemplary embodiment.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to attached
During figure, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary is implemented
Embodiment described in example does not represent all embodiments consistent with the present invention.On the contrary, they be only with such as
The example of the apparatus and method that some aspects that described in detail in appended claims, the present invention are consistent.
Disclosure one video image acquisition method and device, during to solve to gather video image in prior art, adopts
The problem that collection frame per second exists error.
A kind of open video image acquisition method of embodiments herein one.Workflow schematic diagram shown in Figure 1,
Described video image acquisition method comprises the following steps:
Step S11, the acquisition frame rate needed according to this, calculate required acquisition time interval.
Such as, if this acquisition frame rate needed is to need 25 frames/second, i.e. each second to gather 25 two field pictures, then can count
Calculation obtains described required acquisition time and is spaced apart 40 milliseconds/frame；If this needs each second gathers 30 two field pictures, then can count
Calculation obtains described required acquisition time and is spaced apart 33.33 ... 3 ... millisecond/frame.
Wherein, this acquisition frame rate needed, obtain generally according to current actual demand.
Step S12, when by actual acquisition time interval gather video image time, according to described actual acquisition time interval
With required acquisition time interval calculation accumulated time error.
Being affected by the timing accuracy of intervalometer, actual acquisition time interval and required acquisition time are spaced the most not
With.Such as, if this needs each second gathers 30 two field pictures, then required acquisition time is spaced apart 33.33 ... 3 ... and millisecond/
Frame, and the timing accuracy of intervalometer may be only accurate to 1 millisecond, therefore, during actual acquisition, may be every 33
Millisecond gathers a two field picture, or, gather a two field picture every 34 milliseconds, accordingly, actual acquisition time interval is
33 milliseconds/frame or 34 milliseconds/frame.
Further, owing to actual acquisition time interval and required acquisition time are spaced different, all can occur after gathering image every time
Time error.Such as, required acquisition time is spaced apart 33.33 ... 3 ... millisecond/frame, and actual acquisition time interval is 33 millis
Second/frame, gathers a two field picture, it may appear that 0.33 ... 3 the most every time ... the time error of millisecond.
Step S13, when described accumulated time error exceed default error allow threshold value time, when adjusting described actual acquisition
Between be spaced.
In video image acquisition method disclosed in the present application, error can be preset and allow threshold value, such as, institute can be set
Stating error allows threshold value to be 1 millisecond, in this case, if accumulated time error is more than 1 millisecond, then states reality described in adjustment
Acquisition time interval, border.
A kind of open video image acquisition method of the first embodiment of the application, in the method, the collection needed according to this
Frame per second, calculates required acquisition time interval, and accumulates according to actual acquisition time interval and required acquisition time interval calculation
Time error, when described accumulated time error exceedes default error permission threshold value, adjusts between the described actual acquisition time
Every.By the adjustment to actual acquisition time interval, it is possible to make reality acquisition frame rate level off to this need acquisition frame
Rate, thus reduce the frame per second error of the video image of collection.
It addition, in this application, error allows threshold value generally to be arranged according to the demand of collection by staff.Wherein, described
Error allows the maximum of threshold value to be usually not less than the timing accuracy of intervalometer, such as, if the timing accuracy of described intervalometer
Being 1 millisecond, the most described error allows the maximum of threshold value to will be generally greater than or equal to 1 millisecond.
In step S12 of the application, open according to described actual acquisition time interval and required acquisition time interval calculation
Accumulated time error, described according to described actual acquisition time interval with required acquisition time interval calculation accumulated time error,
Comprise the following steps:
First, calculate the time difference between described actual acquisition time interval and described required acquisition time interval, determine institute
State time error that time difference is this and store.
Then, according to the time error stored before and this time error described, calculate and obtain described accumulated time by mistake
Difference.
Such as, if required acquisition frame rate 30 frames/second, then calculate required acquisition time and be spaced apart 1000/30=33.33 ... 3 ...
Millisecond/frame, represents the collection demand to meet this, needs every 33.33 ... 3 ... millisecond gathers a two field picture.Separately
Outward, if actual acquisition time interval is 33 milliseconds/frame, then it represents that in currently practical gatherer process, adopt every 33 milliseconds
Collect a two field picture；If actual acquisition time interval is 34 milliseconds/frame, then it represents that in currently practical gatherer process, every
34 milliseconds gather a two field picture.
It addition, if actual acquisition time interval is 33 milliseconds/frame, then this time error is 0.33 ... 3 ... millisecond；If
Actual acquisition time interval is 34 milliseconds/frame, then this time error is 0.66 ... 6 ... millisecond.
Before basis, the time error of storage and this time error described, calculate and obtain described accumulated time error
Time, generally by the time error stored before and the sum of this time error, as accumulated time error.
Such as, if actual acquisition time interval is 33 milliseconds/frame, required acquisition time interval 33.33 ... 3 ... millisecond/frame,
After then for the first time gathering video image, accumulated time error is 0.33 ... 3 ... millisecond, second time gather video image it
After, accumulated time error is 0.66 ... 6 ... millisecond.In this case, after the 4th time gathers video image, during accumulation
Between error more than 1 millisecond, if preset error allow threshold value be 1 millisecond, the most described accumulated time error exceedes default
Error allows threshold value, needs to adjust actual acquisition time interval.
Further, step S13 of the application discloses and allows threshold value when described accumulated time error exceedes default error
Time, adjusting the operation of described actual acquisition time interval, this operation includes:
If described required acquisition time interval is more than described actual acquisition time interval, heighten between the described actual acquisition time
Every；If described required acquisition time interval is less than described actual acquisition time interval, turn down described actual acquisition time interval.
Such as, required acquisition time is spaced apart 33.33 ... 3 ... millisecond/frame, if actual acquisition time interval be 33 milliseconds/
Frame, the most described required acquisition time interval, more than described actual acquisition time interval, needs to heighten the described actual acquisition time
Interval, in this case, is generally adjusted to 34 milliseconds/frame by actual acquisition time interval；If required acquisition time is spaced
It is 33.33 ... 3 ... millisecond/frame, and actual acquisition time interval is 34 milliseconds/frame, the most described required acquisition time interval
Less than described actual acquisition time interval, need to turn down described actual acquisition time interval, in this case, generally by real
Acquisition time interval, border is adjusted to 33 milliseconds/frame.
It addition, in scheme disclosed in the present application, when heightening described actual acquisition time interval or turning down described actual acquisition
Between interval time, according to the timing accuracy of intervalometer, determine adjustment amplitude.Generally, described adjustment amplitude is not less than described fixed
Time device timing accuracy.
Such as, the described adjustment amplitude timing accuracy equal to described intervalometer is set, if the timing accuracy essence of described intervalometer
Really to 1 millisecond, then arranging described adjustment amplitude is 1 millisecond, if actual acquisition time interval is 33 milliseconds/frame, is adjusting
During high actual acquisition time interval, the actual acquisition time interval reacquired is 34 milliseconds/frame.
Further, video image acquisition method disclosed in the present application, also include:
Set the actual acquisition time interval before not adjusting as initial acquisition time interval, adjust the described initial acquisition time
Behind interval, continue to calculate accumulated time error, and allow threshold in described accumulated time error less than the described error preset
During value, actual acquisition time interval is adjusted to described initial acquisition time interval.
In this application, before accumulated time error allows threshold value not less than default error, described accumulated time error is
The sum of the time error produced when every time gathering.
It addition, exceed described default error in accumulated time error to allow threshold value, and during according to actual acquisition after adjusting
Between interval carry out video image collection after, described accumulated time error is equal to last calculated accumulated time by mistake
Subtractive goes the difference of adjustment amplitude, if this difference allows threshold value still above described default error, then continues according to adjustment
After actual acquisition time interval gather video image, if this difference allows threshold value less than described default error, then ought
Front actual acquisition time interval adjusts to described initial acquisition time interval.
Such as, actual acquisition time interval is 33 milliseconds/frame, required acquisition time interval 33.33 ... 3 ... millisecond/frame,
After then for the first time gathering video image, accumulated time error is 0.33 ... 3 ... millisecond, gather for the 4th time video image it
After, accumulated time error is 1.33 ... 3 ... millisecond, more than 1 millisecond, if the error preset allows threshold value to be 1 millisecond,
The most described accumulated time error exceedes default error and allows threshold value, needs to adjust current actual acquisition time interval.If
Described adjustment amplitude is 1 millisecond, then the actual samples time interval after adjusting is 34 milliseconds/frame, with 34 milliseconds/frame
After gathering the 5th frame video image, accumulated time error is (1.33 ... 3 ...-1) millisecond, is 0.33 ... 3 ... millisecond,
This accumulated time error allows threshold value less than the error preset, then adjust actual acquisition time interval to 33 milliseconds/frame,
It is to say, after gathering the 5th frame video image, actual acquisition time interval can be adjusted to initial acquisition time interval.
It is to say, in video image acquisition method disclosed in the present application, can realize adopting actual according to accumulated time error
The adjustment of collection time interval, so that the actual acquisition time interval during video image acquisition levels off to required acquisition time
Interval, thus reduce the error of the acquisition frame rate of video image.
It addition, during actual acquisition, accuracy value when calculating accumulated time error can be arranged according to the actual requirements, example
As, if required precision is higher, described accumulated time error can be accurate to five or higher precision after arithmetic point, if precision
Requiring relatively low, described accumulated time error can be accurate to the precision of four or lower after arithmetic point, and this is not limited by the application
Fixed.
Accordingly, the open a kind of video image acquisition device of second embodiment of the application.Structure shown in Figure 2 is shown
Being intended to, described video image acquisition device includes: time interval computing module 100, error calculating module 200 and time
Interval adjusting module 300.
Wherein, described time interval computing module 100, for the acquisition frame rate needed according to this, calculate required collection
Time interval.Such as, if this needs each second gathers 25 two field pictures, then can be calculated between described required acquisition time
It is divided into 40 milliseconds/frame；If this needs each second gathers 30 two field pictures, then can be calculated between described required acquisition time
It is divided into 33.33 ... 3 ... millisecond/frame.
Described error calculating module 200, for when gathering video image by actual acquisition time interval, according to described
Actual acquisition time interval and required acquisition time interval calculation accumulated time error.
Described time interval adjusting module 300, is used for when described accumulated time error exceedes default error permission threshold value,
Adjust described actual acquisition time interval.
In video image acquisition method disclosed in the present application, error can be preset and allow threshold value, such as, institute can be set
Stating error allows threshold value to be 1 millisecond, in this case, if accumulated time error is more than 1 millisecond, then adjusts described reality
Acquisition time is spaced.
Further, described error calculating module 200 includes: time difference calculating unit and accumulated time error determine unit.
Wherein, time difference calculating unit, it is used for calculating described actual acquisition time interval and described required acquisition time interval
Between time difference, determine that described time difference is this time error and stores；
Accumulated time error determines unit, for according to the time error that stores before and this time error described, meter
Calculate and obtain described accumulated time error.
Further, described time interval adjusting module includes: the first adjustment unit and the second adjustment unit.
Wherein, described first adjustment unit, if between described required acquisition time interval is more than the described actual acquisition time
Every, heighten described actual acquisition time interval；
Described second adjustment unit, if for described required acquisition time interval less than described actual acquisition time interval, adjusting
Low described actual acquisition time interval.
Such as, required acquisition time is spaced apart 33.33 ... 3 ... millisecond/frame, if actual acquisition time interval be 33 milliseconds/
Frame, the most described required acquisition time interval, more than described actual acquisition time interval, needs to heighten the described actual acquisition time
Interval, in this case, is generally adjusted to 34 milliseconds/frame by actual acquisition time interval；If required acquisition time is spaced
It is 33.33 ... 3 ... millisecond/frame, and actual acquisition time interval is 34 milliseconds/frame, the most described required acquisition time interval
Less than described actual acquisition time interval, need to turn down described actual acquisition time interval, in this case, generally by real
Acquisition time interval, border is adjusted to 33 milliseconds/frame.
Further, described time interval adjusting module 300 is being heightened described actual acquisition time interval or is being turned down described reality
During acquisition time interval, border, according to the timing accuracy of intervalometer, determine adjustment amplitude.
Generally, described adjustment amplitude is not less than the timing accuracy of described intervalometer.Such as, if the timing of described intervalometer is smart
Degree is accurate to 1 millisecond, then arranging described adjustment amplitude is 1 millisecond, if actual acquisition time interval is 33 milliseconds/frame,
When heightening actual acquisition time interval, the actual acquisition time interval reacquired is 34 milliseconds/frame.
Further, in video image acquisition device disclosed in the present application, set the actual acquisition time interval before not adjusting
For initial acquisition time interval, described error calculating module 200 is additionally operable to after adjusting described initial acquisition time interval,
Continue to calculate accumulated time error；Described time interval adjusting module 300 is additionally operable to be less than in described accumulated time error
When the described error preset allows threshold value, actual acquisition time interval is adjusted to described initial acquisition time interval.
In this application, before accumulated time error allows threshold value not less than default error, described accumulated time error is
The sum of the time error produced when every time gathering.
It addition, exceed described default error in accumulated time error to allow threshold value, and during according to actual acquisition after adjusting
Between interval carry out video image collection after, described accumulated time error is equal to last calculated accumulated time by mistake
Subtractive goes the difference of adjustment amplitude, if this difference allows threshold value still above described default error, then continues according to adjustment
After actual acquisition time interval gather video image, if this difference allows threshold value less than described default error, then ought
Front actual acquisition time interval adjusts to described initial acquisition time interval.
Such as, actual acquisition time interval is 33 milliseconds/frame, required acquisition time interval 33.33 ... 3 ... millisecond/frame,
After then for the first time gathering video image, accumulated time error is 0.33 ... 3 ... millisecond, gather for the 4th time video image it
After, accumulated time error is 1.33 ... 3 ... millisecond, more than 1 millisecond, if the error preset allows threshold value to be 1 millisecond,
The most described accumulated time error exceedes default error and allows threshold value, needs to adjust current actual samples time interval.If
Described adjustment amplitude is 1 millisecond, then the actual samples time interval after adjusting is 34 milliseconds/frame, with 34 milliseconds/frame
After gathering the 5th frame video image, accumulated time error is (1.33 ... 3 ...-1) millisecond, is 0.33 ... 3 ... millisecond,
This accumulated time error allows threshold value less than the error preset, then adjust actual acquisition time interval to 33 milliseconds/frame,
It is to say, after gathering the 5th frame video image, actual acquisition time interval can be adjusted to initial acquisition time interval.
It is to say, in video image acquisition method disclosed in the present application, can realize when gathering according to accumulated time error
Between the adjustment at interval, thus reduce the error of the acquisition frame rate of video image.
It addition, during actual acquisition, accuracy value during error calculating module calculating accumulated time error can be according to reality
Demand is arranged, such as, if required precision is higher, described accumulated time error can be accurate to after arithmetic point five or higher
Precision, if required precision is relatively low, described accumulated time error can be accurate to the precision of four or lower, this Shen after arithmetic point
Please this is not limited.
The open a kind of video image acquisition device of second embodiment of the application, by this device, it is possible to calculate adopting of this
The required acquisition time interval that collection demand is corresponding, and tire out according to actual acquisition time interval and required acquisition time interval calculation
Long-pending time error, when described accumulated time error exceedes default error permission threshold value, adjusts the described actual acquisition time
Interval.By the adjustment to actual acquisition time interval, it is possible to reduce the error of the acquisition frame rate of video image.
About the device in above-described embodiment, wherein modules performs the concrete mode of operation in relevant the method
Embodiment is described in detail, explanation will be not set forth in detail herein.
Those skilled in the art, after considering description and putting into practice invention disclosed, will readily occur to other enforcement of the present invention
Scheme.The application is intended to any modification, purposes or the adaptations of the present invention, these modification, purposes or
Adaptations follow the present invention general principle and include the undocumented common knowledge in the art of the present invention or
Conventional techniques means.Description and embodiments is considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in precision architecture described above and illustrated in the accompanying drawings, and
Various modifications and changes can carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a video image acquisition method, it is characterised in that including:
The acquisition frame rate needed according to this, calculates required acquisition time interval；
When gathering video image by actual acquisition time interval, according to described actual acquisition time interval and required collection
Time interval calculates accumulated time error；
When described accumulated time error exceedes default error permission threshold value, adjust described actual acquisition time interval.
Video image acquisition method the most according to claim 1, it is characterised in that described according to described actual acquisition
Time interval and required acquisition time interval calculation accumulated time error include:
Calculate the time difference between described actual acquisition time interval and described required acquisition time interval, determine the described time
Difference is this time error and stores；
According to the time error stored before and this time error described, calculate and obtain described accumulated time error.
Video image acquisition method the most according to claim 1, it is characterised in that described when described accumulated time mistake
When difference exceedes default error permission threshold value, adjust described actual acquisition time interval, including:
If described required acquisition time interval is more than described actual acquisition time interval, heighten described actual acquisition time interval；
If described required acquisition time interval is less than described actual acquisition time interval, turn down described actual acquisition time interval.
Video image acquisition method the most according to claim 3, it is characterised in that
When heightening described actual acquisition time interval or turning down described actual acquisition time interval, according to the timing of intervalometer
Precision, determines adjustment amplitude.
5. according to the video image acquisition method described in any one of Claims 1-4, it is characterised in that also include:
Set the actual acquisition time interval before not adjusting as initial acquisition time interval, adjust the described initial acquisition time
Behind interval, continue to calculate accumulated time error, and allow threshold in described accumulated time error less than the described error preset
During value, actual acquisition time interval is adjusted to described initial acquisition time interval.
6. a video image acquisition device, it is characterised in that including:
Time interval computing module, the acquisition frame rate needed according to this for root, calculate required acquisition time interval；
Error calculating module, for when gathering video image by actual acquisition time interval, according to described actual acquisition
Time interval and required acquisition time interval calculation accumulated time error；
Time interval adjusting module, for when described accumulated time error exceedes default error permission threshold value, adjusting institute
State actual acquisition time interval.
Video image acquisition device the most according to claim 6, it is characterised in that described error calculating module includes:
Time difference calculating unit, for calculating between described actual acquisition time interval and described required acquisition time interval
Time difference, determines that described time difference is this time error and stores；
Accumulated time error determines unit, for according to the time error that stores before and this time error described, meter
Calculate and obtain described accumulated time error.
Video image acquisition device the most according to claim 6, it is characterised in that described time interval adjusting module
Including:
First adjustment unit, if for described required acquisition time interval more than described actual acquisition time interval, heightening institute
State actual acquisition time interval；
Second adjustment unit, if for described required acquisition time interval less than described actual acquisition time interval, turning down institute
State actual acquisition time interval.
Video image acquisition device the most according to claim 8, it is characterised in that
Described time interval adjusting module is being heightened described actual acquisition time interval or is being turned down described actual acquisition time interval
Time, according to the timing accuracy of intervalometer, determine adjustment amplitude.
10. according to the video image acquisition device described in any one of claim 6 to 9, it is characterised in that
Setting the actual acquisition time interval before not adjusting as initial acquisition time interval, described error calculating module is additionally operable to
After adjusting described initial acquisition time interval, continue to calculate accumulated time error；
Described time interval adjusting module is additionally operable to allow threshold value in described accumulated time error less than the described error preset
Time, actual acquisition time interval is adjusted to described initial acquisition time interval.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454473A (en) * | 2016-10-08 | 2017-02-22 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and playing system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403774A (en) * | 2008-11-07 | 2009-04-08 | 扬州中凌高科技发展有限公司 | Harmonic wave analysis method based on non-synchronous sampling |
| CN101419441A (en) * | 2007-10-26 | 2009-04-29 | 上海宝信软件股份有限公司 | History data acquisition method for monitoring system |
| US20110022734A1 (en) * | 2009-07-23 | 2011-01-27 | Square D Company | Differential time synchronization of intelligent electronic devices |
| CN102116796A (en) * | 2010-12-10 | 2011-07-06 | 天津凯发电气股份有限公司 | eTPU-based synchronous sampling and frequency measuring device for alternating-current signals and working method thereof |
| US20150302614A1 (en) * | 2012-07-02 | 2015-10-22 | Raycan Technology Co., Ltd. (Su Zhou) | Synchronization method and system for single event list type data in pet imaging |
-
2016
- 2016-04-26 CN CN201610266598.8A patent/CN105872380A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419441A (en) * | 2007-10-26 | 2009-04-29 | 上海宝信软件股份有限公司 | History data acquisition method for monitoring system |
| CN101403774A (en) * | 2008-11-07 | 2009-04-08 | 扬州中凌高科技发展有限公司 | Harmonic wave analysis method based on non-synchronous sampling |
| US20110022734A1 (en) * | 2009-07-23 | 2011-01-27 | Square D Company | Differential time synchronization of intelligent electronic devices |
| CN102116796A (en) * | 2010-12-10 | 2011-07-06 | 天津凯发电气股份有限公司 | eTPU-based synchronous sampling and frequency measuring device for alternating-current signals and working method thereof |
| US20150302614A1 (en) * | 2012-07-02 | 2015-10-22 | Raycan Technology Co., Ltd. (Su Zhou) | Synchronization method and system for single event list type data in pet imaging |
Non-Patent Citations (1)
| Title |
|---|
| 梅永: "交流采样的实现与谐波分析新算法", 《中国硕士学位论文全文数据库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106454473A (en) * | 2016-10-08 | 2017-02-22 | 广东欧珀移动通信有限公司 | Clock adjustment method and device, terminal and playing system |
| CN106454473B (en) * | 2016-10-08 | 2019-12-03 | Oppo广东移动通信有限公司 | Clock adjustment, device, terminal and play system |
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