CN100589570C - A frame rate control method and device - Google Patents
A frame rate control method and device Download PDFInfo
- Publication number
- CN100589570C CN100589570C CN200810055763A CN200810055763A CN100589570C CN 100589570 C CN100589570 C CN 100589570C CN 200810055763 A CN200810055763 A CN 200810055763A CN 200810055763 A CN200810055763 A CN 200810055763A CN 100589570 C CN100589570 C CN 100589570C
- Authority
- CN
- China
- Prior art keywords
- frame
- frame per
- flag
- controlled flag
- mark
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Television Systems (AREA)
Abstract
The invention provides a frame rate control method and a device thereof. First, a frame rate control mark is generated and a frame dropping mark is arranged in the frame rate control mark; then, the frame rate control mark is read, provided that a mark read in the frame rate control mark at the moment is the frame dropping mark, an image captured by a frame at the moment is discarded. By adoptingthe method of reading the frame rate control mark to flexibly control frame dropping, a video frame that is not processed in time does not need to be cached and the cached video frame does not need towait for processing either, thus improving the flexibility of the frame rate control and reducing delay in video processing.
Description
Technical field
The present invention relates to technical field of video processing, particularly a kind of frame rate control method and device.
Background technology
At present, in video processing procedure, such as video content is gathered, compression, encoding and decoding or when showing, be subject to processing the restriction of ability, all need under a lot of situations the video content that receives is carried out frame per second control,, handle the required disposal ability of video content thereby reduce by reducing frame per second, to adapt to the restriction of disposal ability, avoid because of the not enough problem that causes of disposal ability.Such as when the video acquisition, generally the video image that collects need be compressed preservation, because the frame per second when gathering is constant, generally be per second 30 frames, but the resolution of the video image of gathering is variable, if gather the image of 320X240, so 30 two field pictures that enough will gather of Ya Suo disposal ability all compression finish, if but the image of collection 800X600, disposal ability is not enough probably, can't accomplish that 30 two field pictures that will gather compressed in normal time finishes, at this moment just need before the video image that collects is compressed, frame per second be reduced, the required disposal ability of compression is controlled within the actual treatment capabilities limits, the process of video acquisition and compression is normally carried out.
Existing control to frame per second generally is to adopt in the frame of frame of video or the blank method of interframe insertion.In frame or interframe insert blankly, though reduced frame per second, satisfied the disposal ability requirement, the frame of video buffer memory that this method needs in time to handle gets off, and handles when wait can be processed again, so can produce bigger processing delay.And the frame sum that needs to handle is less than changing, and therefore along with the increase of time, processing delay is accumulation constantly, and delay is with increasing, and a frame of video may postpone for a long time from receiving through frame per second control back output.When the untreated frame of video of accumulation reaches some, when postponing to acquire a certain degree, gross error such as also may cause that buffer memory overflows makes system crash; In addition, this frame rate control method need generate blank the insertion in interframe or the frame, concrete blank insertion position, the blank parameters such as size of generation all need to calculate generation according to actual conditions, and inserting blank in frame also needs frame is made amendment, therefore need to consume bigger disposal ability resource, and handle more complicated.
Summary of the invention
The embodiment of the invention provides a kind of frame rate control method, can improve the flexibility of frame per second control.
The embodiment of the invention provides a kind of frame per second control device, can improve the flexibility of frame per second control.
Below the technical scheme that provides for the embodiment of the invention:
A kind of frame rate control method, this method comprises:
The frame per second controlled flag of step a, generation preseting length;
Step b, with the enable flag set starting point as described frame per second controlled flag;
Step c, with the frame losing set at interval the mark in the described frame per second controlled flag be set to abandon mark, and other marks are set to retention marker;
Steps d, read the enable flag of described frame per second controlled flag, if described enable flag is for enabling, execution in step e then, otherwise return steps d;
The mark in the frame per second controlled flag is read in step e, circulation, if current being labeled as of reading in the frame per second controlled flag abandons mark, then abandons the present frame images acquired, otherwise keeps the present frame images acquired.
Described step c further is provided with the frame losing number and subtracts 1 difference after divided by the frame losing number with frame per second controlled flag length as frame losing at interval; If frame per second controlled flag length comprises the integer quotient and the remainder divided by the result of frame losing number, then frame per second controlled flag length is deducted the merchant that obtains divided by the frame losing number behind the described remainder at interval as frame losing.
A kind of frame per second control device, this device comprises:
First module is used to generate the frame per second controlled flag of preseting length;
Second module is used for the enable flag that will the set starting point as described frame per second controlled flag;
Three module, be used for the frame losing set at interval the mark of described frame per second controlled flag be set to abandon mark, and other marks are set to retention marker;
Four module is used to read the enable flag of described frame per second controlled flag, if described enable flag for enabling, then by the 5th resume module, otherwise continues to read the enable flag of described frame per second controlled flag;
The 5th module is used for circulating and reads the mark of described frame per second controlled flag, if current being labeled as of reading in the frame per second controlled flag abandons mark, then abandons the present frame images acquired, otherwise keeps the present frame images acquired.
Described three module further subtracts 1 difference after divided by the frame losing number that is provided with as frame losing at interval with frame per second controlled flag length; If frame per second controlled flag length comprises the integer quotient and the remainder divided by the result of frame losing number, then frame per second controlled flag length is deducted the merchant who obtains divided by the frame losing number behind the described remainder and subtract 1 more at interval as frame losing.
From technique scheme as can be seen, frame rate control method that the embodiment of the invention provides and device, employing is read the mode of frame per second controlled flag and is controlled frame losing flexibly, do not need the frame of video that buffer memory in time do not handle and wait for that the frame of video of described buffer memory handles, therefore, can improve the flexibility of frame per second control, also reduce the time-delay in the Video processing.
Description of drawings
The flow chart of the frame rate control method that Fig. 1 provides for the embodiment of the invention one;
The flow chart of the frame rate control method that Fig. 2 provides for the embodiment of the invention two;
The structure chart of the frame per second control device that Fig. 3 provides for the embodiment of the invention three.
Embodiment
For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
First embodiment:
The flow chart of the frame rate control method that Fig. 1 provides for the embodiment of the invention.As shown in Figure 1:
Step 101: generate the frame per second controlled flag and in described frame per second controlled flag, the frame losing mark is set.
This step can adopt mode one realization:
Generate the frame per second controlled flag of preseting length.
In the frame per second controlled flag that generates, be set to abandon mark with the mark in the described frame per second controlled flag of setting in frame losing interval.
This step can also adopt mode two realizations:
Generate the frame per second controlled flag of preseting length.
With the enable flag set starting point as described frame per second controlled flag.
Be set to abandon mark with the mark in the described frame per second controlled flag of setting in frame losing interval.
Step 102: the frame per second controlled flag that read step 101 generates if current being labeled as of reading abandons mark, then abandons the present frame images acquired in the frame per second controlled flag.
If step 101 employing mode one realizes that in this step, the frame per second controlled flag that described read step 101 generates can realize in the following ways:
Begin to highest order from the lowest order of frame per second controlled flag, the mark in the frame per second controlled flag is read in circulation; Perhaps the highest order from the frame per second controlled flag begins to lowest order, and the mark in the frame per second controlled flag is read in circulation.
If step 101 employing mode two realizes that in this step, the frame per second controlled flag that described read step 101 generates can realize in the following ways:
Read the enable flag of described frame per second controlled flag, if described enable flag then reads other mark in the frame per second controlled flag for enabling, otherwise, return the step of the enable flag that reads described frame per second controlled flag.
In addition, if the current mark that in the frame per second controlled flag, reads be not abandon mark neither enable flag, then this method may further include: keep the present frame images acquired.
Second embodiment:
The flow chart of the frame rate control method that Fig. 2 provides for the embodiment of the invention.As shown in Figure 2:
Step 201: the frame per second controlled flag that generates preseting length.
Step 202: with the enable flag set starting point as described frame per second controlled flag.
In actual applications, this step also can be omitted.For example, enable flag can be set, if read the frame losing mark then abandon the present frame images acquired, if realize not frame losing, can be 0 with the length setting of frame per second controlled flag then, perhaps frame losing is set at 0 at interval.Like this, just realized the function of enable flag.
Step 203: be set to abandon mark with the mark in the described frame per second controlled flag of setting in frame losing interval, other mark is set to retention marker.
In this step, the described mark that abandons can adopt multiple mode to realize, for example character, binary number or character string, or the like.With the simplest binary digit is example, is 30 if set the length of frame per second controlled flag, and frame losing is spaced apart 4, supposes that step 201 with the frame per second controlled flag of the binary form of generation is:
111111111111111111111111111111。
In the present embodiment, set 0 and be the frame losing mark, 1 is retention marker.4 in length is 30 frame per second controlled flag, the frame losing mark is set at interval with the frame losing set.The result is set is:
111101111011110111101111011110。
Wherein, the position of frame losing mark can be chosen flexibly, if satisfy every 41 be provided with one 0 just passable.For example, be provided with the result also can for: 101111011110111101111011110111, perhaps be: 011110111101111011110111101111, or the like.
In addition,, also the frame losing number can be set, adopt mathematical computations promptly can draw frame losing at interval, frame losing interval=frame per second controlled flag length/frame losing number-1 if be inconvenient to be provided with frame losing in advance at interval.For example, the length that the frame per second controlled flag is set is 30, and the frame losing number is 6, and so, frame losing is spaced apart: 30/60-1=4.
When the aliquant frame losing number of the length of the frame per second controlled flag that is provided with, the result who obtains after being divided by comprises quotient and the remainder, in this case, can be earlier as frame losing at interval with the merchant, the length of frame per second controlled flag is deducted the length of remainder as new frame per second controlled flag, in new frame per second controlled flag, the frame losing mark is set at interval according to new frame per second controlled flag length and described frame losing again.After this, a remaining remainder retention marker is inserted between per two frame losing marks successively.
Still the frame per second controlled flag with binary form is an example, suppose that the frame per second controlled flag length of setting is 34, the frame losing number is 6,34/6=5 surpluss 4, so can be with 34-4=30 as new frame per second controlled flag, use 30/6-1=4 at interval again, in described length is 30 frame per second controlled flag as frame losing, every 4 frames a frame losing mark is set, the result is identical with above-mentioned situation:
101111011110111101111011110111。
But present frame per second controlled flag length is 30, so need remaining 4 retention marker " 1 ", evenly inserts this length and be 30 frame per second controlled flag.Be specifically as follows: after each frame losing mark, insert a retention marker successively, perhaps be, between per two frame losing marks, insert a retention marker successively.
The result of the final frame per second controlled flag of setting can for:
1011111011111011111011111011110111。
Like this, just make the frame losing mark in the frame per second controlled flag distribute equably as far as possible.
Step 204: read the enable flag of frame per second controlled flag starting point, if described enable flag is for enabling, then execution in step 205, otherwise, return step 204.
In the present embodiment, described enable flag can be a binary digit, and for example, if enable flag is changed to 1, then expression enables, if enable flag is changed to 0, then represents disable.
If omitted step 202, then this step also can be omitted, directly execution in step 205.
Step 205: begin to highest order from the lowest order of frame per second controlled flag, the mark in the frame per second controlled flag is read in circulation, if being labeled as of reading abandons mark, then execution in step 206, otherwise execution in step 207.
In the present embodiment, suppose that described frame per second controlled flag is:
111101111011110111101111011110。
In the step, when receiving images acquired, begin until highest order reads the mark the frame per second controlled flag,, judge that then being labeled as of reading abandons mark, execution in step 206 if read 0 from the lowest order of frame per second controlled flag; If read 1, then judge read be labeled as retention marker, execution in step 207.
By with frame losing mark mean allocation in the frame per second controlled flag, frame per second can be controlled at a state relatively stably.
Read after 30 marks of described frame per second controlled flag, returned the step that begins to read the mark the frame per second controlled flag from the lowest order of frame per second controlled flag up to highest order.
In addition, also can adopt to begin to circulate and read mark the frame per second controlled flag to the mode of lowest order from the highest order of frame per second controlled flag.
Step 206: abandon the present frame images acquired, process ends.
Step 207: keep the present frame images acquired.
The embodiment of the invention also provides a kind of frame per second control device, with embodiment the frame per second control device that the embodiment of the invention provides is described in further detail below.
The 3rd embodiment:
The structure chart of the frame per second control device that Fig. 3 provides for the embodiment of the invention.As shown in Figure 3:
The frame per second control device that the embodiment of the invention provides comprises: configuration module 301 and control module 302.
Wherein, configuration module 301 comprises: generation module 3011 and distribution module 3012.
In addition, distribution module 3021 can be further used for after the frame per second controlled flag that receives from generation module 3011, earlier with the enable flag set first place as described frame per second controlled flag, be set to abandon mark with the mark in the described frame per second controlled flag of setting in frame losing interval again, described frame per second controlled flag is sent to control module 302.
Read module 3021 is used to receive the frame per second controlled flag from configuration module 301, read the mark in the described frame per second controlled flag, if being labeled as of reading in described frame per second controlled flag abandons mark, then send and abandon message, otherwise send reservation message to processing module 3022 to processing module 3022.
From technique scheme as can be seen, frame rate control method that the embodiment of the invention provides and device, employing is read the mode of frame per second controlled flag and is controlled frame losing flexibly, do not need the frame of video that buffer memory in time do not handle and wait for that the frame of video of described buffer memory handles, therefore, can improve the flexibility of frame per second control, also reduce the time-delay in the Video processing.
In addition, control frame per second, do not need to do the calculating and the modification of large amount of complex, saved the disposal ability resource, and processing method is simple according to reading the frame per second controlled flag.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1, a kind of frame rate control method is characterized in that, this method comprises:
The frame per second controlled flag of step a, generation preseting length;
Step b, with the enable flag set starting point as described frame per second controlled flag;
Step c, with the frame losing set at interval the mark in the described frame per second controlled flag be set to abandon mark, and other marks are set to retention marker;
Steps d, read the enable flag of described frame per second controlled flag, if described enable flag is for enabling, execution in step e then, otherwise return steps d;
The mark in the frame per second controlled flag is read in step e, circulation, if current being labeled as of reading in the frame per second controlled flag abandons mark, then abandons the present frame images acquired, otherwise keeps the present frame images acquired.
2, method according to claim 1 is characterized in that, described step c further is provided with the frame losing number and subtracts 1 difference after divided by the frame losing number with frame per second controlled flag length as frame losing at interval; If frame per second controlled flag length comprises the integer quotient and the remainder divided by the result of frame losing number, then frame per second controlled flag length is deducted the merchant who obtains divided by the frame losing number behind the described remainder and subtract 1 more at interval as frame losing.
3, a kind of frame per second control device is characterized in that, this device comprises:
First module is used to generate the frame per second controlled flag of preseting length;
Second module is used for the enable flag that will the set starting point as described frame per second controlled flag;
Three module, be used for the frame losing set at interval the mark of described frame per second controlled flag be set to abandon mark, and other marks are set to retention marker;
Four module is used to read the enable flag of described frame per second controlled flag, if described enable flag for enabling, then by the 5th resume module, otherwise continues to read the enable flag of described frame per second controlled flag;
The 5th module is used for circulating and reads the mark of described frame per second controlled flag, if current being labeled as of reading in the frame per second controlled flag abandons mark, then abandons the present frame images acquired, otherwise keeps the present frame images acquired.
4, device according to claim 3 is characterized in that, described three module further subtracts 1 difference after divided by the frame losing number that is provided with as frame losing at interval with frame per second controlled flag length; If frame per second controlled flag length comprises the integer quotient and the remainder divided by the result of frame losing number, then frame per second controlled flag length is deducted the merchant who obtains divided by the frame losing number behind the described remainder and subtract 1 more at interval as frame losing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810055763A CN100589570C (en) | 2008-01-08 | 2008-01-08 | A frame rate control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810055763A CN100589570C (en) | 2008-01-08 | 2008-01-08 | A frame rate control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101217657A CN101217657A (en) | 2008-07-09 |
| CN100589570C true CN100589570C (en) | 2010-02-10 |
Family
ID=39624011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810055763A Active CN100589570C (en) | 2008-01-08 | 2008-01-08 | A frame rate control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100589570C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729089B (en) * | 2008-10-23 | 2013-07-10 | 弥亚微电子（上海）有限公司 | Transmitter and receiver of communication system and synchronization method thereof |
| CN101511029B (en) * | 2009-03-25 | 2012-08-08 | 无锡中星微电子有限公司 | Method and apparatus for correcting data error in image processing system |
| CN101626500B (en) * | 2009-07-31 | 2011-07-27 | 北京大学深圳研究生院 | Method and device for controlling video frame rate |
| CN101931799A (en) * | 2010-09-14 | 2010-12-29 | 中兴通讯股份有限公司 | Method and device for smoothing video bit stream |
| CN102082896B (en) * | 2011-03-04 | 2014-04-16 | 中山大学 | Method for treating video of liquid crystal display device |
| CN103024327B (en) * | 2011-09-28 | 2015-12-09 | 中磊电子（苏州）有限公司 | Video recording method and video recording device |
| JP5843631B2 (en) * | 2012-01-26 | 2016-01-13 | 日本電信電話株式会社 | Frame rate control method, frame rate control device, and frame rate control program |
| CN104378543B (en) * | 2013-08-15 | 2017-10-31 | 宝山钢铁股份有限公司 | Over-sampling picture synchronization collection suppresses frame losing method |
| TWI538519B (en) * | 2014-11-17 | 2016-06-11 | 廣達電腦股份有限公司 | Capture apparatuses of video images |
| CN105282609A (en) * | 2015-01-13 | 2016-01-27 | 合肥宏晶微电子科技股份有限公司 | Low-memory video frame rate adjusting method |
| CN110572695A (en) * | 2019-08-07 | 2019-12-13 | 苏州科达科技股份有限公司 | media data encoding and decoding methods and electronic equipment |
| CN111277836B (en) * | 2020-01-19 | 2021-10-22 | 苏州浪潮智能科技有限公司 | Video extraction frame loss control method, system, terminal and storage medium |
| CN114071227A (en) * | 2020-08-06 | 2022-02-18 | 北京小米移动软件有限公司 | Data processing method and device |
| CN112019880B (en) * | 2020-10-30 | 2021-02-12 | 南斗六星系统集成有限公司 | Video file splicing method with any frame rate |
-
2008
- 2008-01-08 CN CN200810055763A patent/CN100589570C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101217657A (en) | 2008-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100589570C (en) | A frame rate control method and device | |
| CN101159862B (en) | Frame rate control method and device | |
| CN1871854B (en) | Hypothetical reference decoder with low start-up delays for compressed image and video | |
| CN110245743A (en) | A kind of asynchronous distributed deep learning training method, apparatus and system | |
| CN105451087A (en) | Pushing method, terminals, historical data server and system for barrage information | |
| CN1355904A (en) | System and methods for providing video-on-demand services for broadcasting systems | |
| CN101089833A (en) | Information processing apparatus, method of same, and program for same | |
| CN105391804A (en) | Remote invocation method capable of reducing transmission flow | |
| US11038665B2 (en) | Transmission apparatus and communication system | |
| CN103945013A (en) | Data transmission interface device and data transmission method | |
| CN104980740A (en) | Image processing method, image processing device and electronic equipment | |
| CN106412588B (en) | Image frame processing method | |
| CN101616327A (en) | The method that multi-DSP core framework and fast parallel vision signal are handled | |
| CN1926885B (en) | Video processing circuit and method of video processing | |
| CN101945271B (en) | Image compression system and compression method | |
| CN105681864A (en) | IP-based transmission flow jitter removing method and device | |
| CN101296373B (en) | Multimedia data processing system and method based on material exchange format | |
| CN110636219B (en) | Video data stream transmission method and device | |
| Hsu et al. | Content-sensitive data compression for IoT streaming services | |
| CN103945221B (en) | Video coding-decoding method, device and the video code flow of generation | |
| CN110446046A (en) | A kind of batch images fast decoding method based on embedded platform | |
| CN103093485B (en) | Full view video cylindrical surface image storage method and system | |
| KR20030017348A (en) | Data routing and processing device | |
| US8121116B1 (en) | Intra channel video stream scheduling | |
| Touch | Parallel communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI VIMICRO CO., LTD. Free format text: FORMER OWNER: VIMICRO CORPORATION Effective date: 20110127 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 15/F, SHINING BUILDING, NO. 35, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 214028 610, NATIONAL IC DESIGN PARK (CHUANGYUAN BUILDING), NO. 21-1, CHANGJIANG ROAD, WUXI NEW DISTRICT, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110127 Address after: 214028 national integrated circuit design (21-1), Changjiang Road, New District, Jiangsu, Wuxi, China, China (610) Patentee after: WUXI VIMICRO Corp. Address before: 100083, Haidian District, Xueyuan Road, Beijing No. 35, Nanjing Ning building, 15 Floor Patentee before: VIMICRO Corp. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 214028 Jiangsu province Wuxi District Qingyuan Road No. 18 Taihu International Science Park sensor network university science and Technology Park 530 building A10 Patentee after: Zgmicro Corporation Address before: 214028 national integrated circuit design (21-1), Changjiang Road, New District, Jiangsu, Wuxi, China, China (610) Patentee before: WUXI VIMICRO Corp. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20161129 Address after: 226300 Tongzhou District, Nantong, Century Avenue, No. 6, layer 999, No. Patentee after: JIANGSU DAHAI INTELLIGENT SYSTEM Co.,Ltd. Address before: 214028 Jiangsu province Wuxi District Qingyuan Road No. 18 Taihu International Science Park sensor network university science and Technology Park 530 building A10 Patentee before: Zgmicro Corporation |