CN105847822A - Video decoding method and device - Google Patents
Video decoding method and device Download PDFInfo
- Publication number
- CN105847822A CN105847822A CN201610202949.9A CN201610202949A CN105847822A CN 105847822 A CN105847822 A CN 105847822A CN 201610202949 A CN201610202949 A CN 201610202949A CN 105847822 A CN105847822 A CN 105847822A
- Authority
- CN
- China
- Prior art keywords
- decoder
- video
- dependency
- meansigma methods
- decoding
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention provides a video decoding method and device, relating to the video data processing field. The method comprises: obtaining the correlation between each two adjacent frames in a video; calculating the average value of obtained correlation; determining one decoder out of at least two preset decoders according to the average value, wherein different preset decoders employ decoding algorithms of different complexities; and utilizing a determined decoder to decode the video. The method and device can dynamically select a decoder according to the correlation of video frames so as to optimize decoding operation occupation on system resources, and possess higher flexibility and decoding efficiency.
Description
Technical field
The present invention relates to video data process field, be specifically related to a kind of video encoding/decoding method and device.
Background technology
Video decoding refers to, by specific decompression technique, be converted into by the file of certain video format
Another kind of video format file, its ultimate principle is owing to video interframe has certain similarity, because of
This can reduce video by steps such as inter prediction, removal redundancies when storage or transmission video
Data volume, when user watches video, again by removing the step such as redundancy interframe, inter prediction
The data of reduction video in the future.
Video player generally comprises decoder, decoder quantity that different players comprises and kind
Class may be different, and user even can add decoder and supplement player.For same
Different (the change used during inter prediction of the decoding algorithm that the different decoder of file format is used
Algorithm differs), and then decoding effect can be made to differ, difference essentially consists in, and decoding algorithm is more complicated
Decoder be suitable for video obvious to scene changes and be decoded, and decoding algorithm is simpler
The video that is suitable for scene changes is more flat of decoder be decoded, but algorithm is more complicated
Decoder is higher to hardware device requirement, taking system resource also can be more.
Existing decoding process is to be selected a kind of decoder by player according to file format, and broadcasts
Putting in device and only prestore a kind of decoder for same file format, system is provided by video decoding operation
The situation that takies in source depends entirely on the decoding algorithm complexity of this decoder.More flat for scene changes
For light video, owing to the picture data similarity in video is the highest, current picture is decoded
Time can utilize the data of most of previous picture, therefore use complicated or simple decoder to solve
Picture difference obtained by Ma is the most little, therefore can use the simple decoder of algorithm be decoded with
Save system resource, if but select same decoder, meet phase scene changes and significantly regard. always
Frequently, time, simple decoder will affect final picture effect；In like manner, if select complexity always
Decoder, then can cause the wasting of resources, it can be seen that the flexibility ratio of existing decoding process and decoding
Inefficient.
Summary of the invention
The present invention is to solve the flexibility ratio of existing decoding process and the relatively low problem of decoding efficiency.
In view of this, the invention provides a kind of video encoding/decoding method, including: obtain every 2 in video
Dependency between individual adjacent pictures；Calculate the meansigma methods of each the described dependency got；According to
Described meansigma methods determines 1 decoder at least 2 default decoders, and wherein, different presets
The complexity of the decoding algorithm that decoder is used differs；Utilize the decoder determined to described video
It is decoded.
Preferably, the dependency between every 2 adjacent pictures in described acquisition video, including: obtain
Take each frame picture in video；Calculate the dependency of each group of consecutive frame picture.
Preferably, the dependency between every 2 adjacent pictures in described acquisition video, including: obtain
Take the key frame picture in each scene in video；Calculate between each group of adjacent key frame picture
Dependency.
Preferably, described default decoder is the first decoder and the second decoder, wherein said first
The decoding algorithm that the complexity of the decoding algorithm that decoder is used is used less than described second decoder
Complexity.
Preferably, described at least 2 default decoders, 1 decoding is determined according to described meansigma methods
Device, wherein, the complexity of the decoding algorithm that different default decoders is used differs, including:
Judge that whether described meansigma methods is higher than presetting relevance threshold；When described meansigma methods is higher than presetting dependency
During threshold value, select described first decoder；When described meansigma methods is less than when presetting relevance threshold, select
Select described second decoder.
Correspondingly, the present invention provides a kind of video decoder, including: dependency acquiring unit, use
Dependency between every 2 adjacent pictures obtained in video；Average correlation computing unit, uses
In the meansigma methods calculating each the described dependency got；Decoder determines unit, for according to institute
State meansigma methods at least 2 default decoders, determine 1 decoder, wherein, different default solutions
The complexity of the decoding algorithm that code device is used differs；Decoding unit, for utilizing the decoding determined
Described video is decoded by device.
Preferably, described dependency acquiring unit includes: frame data acquiring unit, is used for obtaining video
In each frame picture；Frame-to-frame correlation computing unit, for calculating the relevant of each group of consecutive frame picture
Property.
Preferably, described dependency acquiring unit includes: key frame data acquiring unit, is used for obtaining
The key frame picture in each scene in video；Correlation calculations unit between scene, is used for calculating
Dependency between the key frame picture that each group is adjacent.
Preferably, described default decoder is the first decoder and the second decoder, wherein said first
The decoding algorithm that the complexity of the decoding algorithm that decoder is used is used less than described second decoder
Complexity.
Preferably, described decoder determines that unit includes: judging unit, is used for judging described meansigma methods
Whether higher than presetting relevance threshold；First selects unit, for when described meansigma methods is higher than presetting phase
During closing property threshold value, select described first decoder；Second selects unit, is used for when described meansigma methods is low
When default relevance threshold, select described second decoder.
The video encoding/decoding method provided according to the present invention and device, first obtain every 2 phases in video
Dependency between adjacent picture, and calculate the meansigma methods average correlation as whole video, then
Dependency meansigma methods according to picture data determines 1 decoder in default decoder, finally utilizes
Video is decoded by the decoder determined, the present invention dynamically can select according to the picture dependency of video
Selecting decoder, optimize decoding operation with this and system resource is taken situation, the present invention possesses higher
Motility and decoding efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
The flow chart of the video encoding/decoding method that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the video decoder that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
As long as additionally, technical characteristic involved in invention described below difference embodiment that
The conflict of not constituting between this just can be combined with each other.
Embodiment 1
The embodiment of the present invention provides a kind of video encoding/decoding method, and the method can in computer, intelligence eventually
Performing in the intelligent electronic devices such as end, the method includes as shown in Figure 1:
S1, obtains the dependency between every 2 adjacent pictures in video.Video is the most a string
Image sequence, the dependency between picture i.e. refers to the ratio of the identical content that two pictures are had, for
For the visual system of people, two images of the highest expression of dependency seem the most similar.Such as some is said
Seat video, in video, substantial amounts of content is that a people gives a lecture in a fixed scene, two pictures
Difference between face essentially consists of the face of people, and identical content occupies significant proportion, therefore the two
The dependency of picture is the highest.For computer, then to calculate the two by the data of picture
The dependency of picture, correlation calculations method has multiple, and the present invention uses any one method existing
It is feasible；
S2, calculates the meansigma methods of each the described dependency got.Can obtain many through step S1
Individual correlation data, this step is the meansigma methods calculating all correlation data.
S3, determines 1 decoder according to described meansigma methods at least 2 default decoders, wherein,
The complexity of the decoding algorithm that different default decoders is used differs.Such as can be at player
In prestore multiple decoder for same file format, the change algorithm that each decoder is used
Complexity is different, can be compared with predetermined threshold value by the dependency that get, according to comparison result
Select a decoder, relative complex decoder can be selected in the case of relatively low for average correlation,
Relatively simple decoder can be selected when average correlation is higher；
S4, utilizes the decoder determined to be decoded described video.
The video encoding/decoding method provided according to embodiments of the present invention, first obtains every 2 phases in video
Dependency between adjacent picture, and calculate the meansigma methods average correlation as whole video, then
Dependency meansigma methods according to picture data determines 1 decoder in default decoder, finally utilizes
Video is decoded by the decoder determined, the present invention dynamically can select according to the picture dependency of video
Selecting decoder, optimize decoding operation with this and system resource is taken situation, the present invention possesses higher
Motility and decoding efficiency.
As one preferred embodiment, above-mentioned steps S1 may include that
S11a, obtains each frame picture in video；
S12a, calculates the dependency of each group of consecutive frame picture.This programme calculates one for every 2 frame pictures
Individual correlation data, and then calculate average correlation, the average correlation accuracy thus calculated is more
High.
As another preferred embodiment, above-mentioned steps S1 may include that
S11b, obtains the key frame picture in each scene in video.In order to make the user can be
On scene level browsing video, video production side would generally become camera lens Video segmentation, and uses
Key frame represents camera lens, then on the basis of camera lens, similar clustering shots is constituted scene, finally
Extract frame based on scene and be referred to as key frame.
S12b, calculates the dependency between each group of adjacent key frame picture.
There is between most of continuous print frames higher dependency, but the dependency between scene is typically
Relatively low, only just there will be dependency when being played to two frames adjacent when between two scenes and occur
The situation of significant change, the present invention only calculates dependency, and then calculates the key frame between adjacent scene
Key frame average correlation, thus can reduce amount of calculation, improve decoding efficiency further.
As one preferred embodiment, the quantity for the default decoder of same formatted file is excellent
Electing 2 as, the respectively first decoder and the second decoder, wherein said first decoder is used
The complexity of decoding algorithm that used less than described second decoder of the complexity of decoding algorithm.
Further, above-mentioned steps S3 may include that
S31, it is judged that whether described meansigma methods is higher than presetting relevance threshold；
S32, when described meansigma methods is higher than when presetting relevance threshold, selects described first decoder；
S33, when described meansigma methods is less than when presetting relevance threshold, selects described second decoder.
Above-mentioned preferred version only selects between two default decoders, thus can improve decoding
Efficiency.
Embodiment 2
The embodiment of the present invention provides a kind of video decoder, as in figure 2 it is shown, the method includes:
Dependency acquiring unit 21, for obtaining the dependency between every 2 adjacent pictures in video；
Average correlation computing unit 22, for calculating the meansigma methods of each the described dependency got；
Decoder determines unit 23, for according to described meansigma methods at least 2 default decoders really
Fixed 1 decoder, wherein, the complexity not phase of the decoding algorithm that different default decoders is used
With；
Decoding unit 24, for utilizing the decoder determined to be decoded described video.
The video decoder provided according to embodiments of the present invention, first obtains every 2 phases in video
Dependency between adjacent picture, and calculate the meansigma methods average correlation as whole video, then
Dependency meansigma methods according to picture data determines 1 decoder in default decoder, finally utilizes
Video is decoded by the decoder determined, the present invention dynamically can select according to the picture dependency of video
Selecting decoder, optimize decoding operation with this and system resource is taken situation, the present invention possesses higher
Motility and decoding efficiency.
Preferably, described dependency acquiring unit 21 includes:
Frame data acquiring unit, for obtaining each frame picture in video；
Frame-to-frame correlation computing unit, for calculating the dependency of each group of consecutive frame picture.
This programme calculates a correlation data for every 2 frame pictures, and then calculates average correlation,
The average correlation accuracy thus calculated is higher.
Preferably, described dependency acquiring unit 21 includes:
Key frame data acquiring unit, for obtaining the key frame picture in each scene in video；
Correlation calculations unit between scene, for calculating being correlated with between each group of adjacent key frame picture
Property.
There is between most of continuous print frames higher dependency, but the dependency between scene is typically
Relatively low, only just there will be dependency when being played to two frames adjacent when between two scenes and occur
The situation of significant change, the present invention only calculates dependency, and then calculates the key frame between adjacent scene
Key frame average correlation, thus can reduce amount of calculation, improve decoding efficiency further.
Preferably, described default decoder is the first decoder and the second decoder, wherein said first
The decoding algorithm that the complexity of the decoding algorithm that decoder is used is used less than described second decoder
Complexity.
Preferably, described decoder determines that unit 22 includes:
Judging unit, is used for judging that whether described meansigma methods is higher than presetting relevance threshold；
First selects unit, for when described meansigma methods is higher than when presetting relevance threshold, selecting described
First decoder；
Second selects unit, for when described meansigma methods is less than when presetting relevance threshold, selecting described
Second decoder.Above-mentioned preferred version only selects between two default decoders, the most permissible
Improve decoding efficiency.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
Claims (10)
1. a video encoding/decoding method, it is characterised in that including:
Obtain the dependency between every 2 adjacent pictures in video；
Calculate the meansigma methods of each the described dependency got；
In at least 2 default decoders, 1 decoder is determined according to described meansigma methods, wherein,
The complexity of the decoding algorithm that different default decoders is used differs；
Utilize the decoder determined that described video is decoded.
Video encoding/decoding method the most according to claim 1, it is characterised in that described acquisition regards
The dependency between every 2 adjacent pictures in Pin, including:
Obtain each frame picture in video；
Calculate the dependency of each group of consecutive frame picture.
Video encoding/decoding method the most according to claim 1, it is characterised in that described acquisition regards
The dependency between every 2 adjacent pictures in Pin, including:
Obtain the key frame picture in each scene in video；
Calculate the dependency between each group of adjacent key frame picture.
4. according to the video encoding/decoding method according to any one of claim 1-3, it is characterised in that
Described default decoder is the first decoder and the second decoder, and wherein said first decoder is used
The complexity of decoding algorithm that used less than described second decoder of the complexity of decoding algorithm.
Video encoding/decoding method the most according to claim 4, it is characterised in that described according to institute
State meansigma methods at least 2 default decoders, determine 1 decoder, wherein, different default solutions
The complexity of the decoding algorithm that code device is used differs, including:
Judge that whether described meansigma methods is higher than presetting relevance threshold；
When described meansigma methods is higher than when presetting relevance threshold, select described first decoder；
When described meansigma methods is less than when presetting relevance threshold, select described second decoder.
6. a video decoder, it is characterised in that including:
Dependency acquiring unit, for obtaining the dependency between every 2 adjacent pictures in video；
Average correlation computing unit, for calculating the meansigma methods of each the described dependency got；
Decoder determines unit, for according to described meansigma methods at least 2 default decoders really
Fixed 1 decoder, wherein, the complexity not phase of the decoding algorithm that different default decoders is used
With；
Decoding unit, for utilizing the decoder determined to be decoded described video.
Video decoder the most according to claim 6, it is characterised in that described dependency
Acquiring unit includes:
Frame data acquiring unit, for obtaining each frame picture in video；
Frame-to-frame correlation computing unit, for calculating the dependency of each group of consecutive frame picture.
Video decoder the most according to claim 6, it is characterised in that described dependency
Acquiring unit includes:
Key frame data acquiring unit, draws for obtaining the key frame in each scene in video
Face；
Correlation calculations unit between scene, for calculating the phase between each group of adjacent key frame picture
Guan Xing.
9. according to the video decoder according to any one of claim 6-8, it is characterised in that
Described default decoder is the first decoder and the second decoder, and wherein said first decoder is used
The complexity of decoding algorithm that used less than described second decoder of the complexity of decoding algorithm.
Video decoder the most according to claim 4, it is characterised in that described decoding
Device determines that unit includes:
Judging unit, is used for judging that whether described meansigma methods is higher than presetting relevance threshold；
First selects unit, for when described meansigma methods is higher than when presetting relevance threshold, selecting institute
State the first decoder；
Second selects unit, for when described meansigma methods is less than when presetting relevance threshold, selecting institute
State the second decoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202949.9A CN105847822A (en) | 2016-04-01 | 2016-04-01 | Video decoding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202949.9A CN105847822A (en) | 2016-04-01 | 2016-04-01 | Video decoding method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105847822A true CN105847822A (en) | 2016-08-10 |
Family
ID=56596605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610202949.9A Pending CN105847822A (en) | 2016-04-01 | 2016-04-01 | Video decoding method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105847822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139104A (en) * | 2018-02-09 | 2019-08-16 | 腾讯科技（深圳）有限公司 | Video encoding/decoding method, device, computer equipment and storage medium |
| CN112738525A (en) * | 2020-12-11 | 2021-04-30 | 深圳万兴软件有限公司 | Video processing method, device and computer readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212685A (en) * | 2006-12-28 | 2008-07-02 | 三星电子株式会社 | Method and apparatus for encoding/decoding an image |
| CN101626512A (en) * | 2009-08-11 | 2010-01-13 | 北京交通大学 | Method and device of multiple description video coding based on relevance optimization rule |
| US20100158125A1 (en) * | 2008-12-19 | 2010-06-24 | Samsung Electronics Co., Ltd. | Method and apparatus for constructing and decoding video frame in video signal processing apparatus using multi-core processing |
| CN102905157A (en) * | 2012-09-29 | 2013-01-30 | 四川长虹电器股份有限公司 | Television three-dimensional (3D) signal format automatically identifying method |
-
2016
- 2016-04-01 CN CN201610202949.9A patent/CN105847822A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212685A (en) * | 2006-12-28 | 2008-07-02 | 三星电子株式会社 | Method and apparatus for encoding/decoding an image |
| US20100158125A1 (en) * | 2008-12-19 | 2010-06-24 | Samsung Electronics Co., Ltd. | Method and apparatus for constructing and decoding video frame in video signal processing apparatus using multi-core processing |
| CN101626512A (en) * | 2009-08-11 | 2010-01-13 | 北京交通大学 | Method and device of multiple description video coding based on relevance optimization rule |
| CN102905157A (en) * | 2012-09-29 | 2013-01-30 | 四川长虹电器股份有限公司 | Television three-dimensional (3D) signal format automatically identifying method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139104A (en) * | 2018-02-09 | 2019-08-16 | 腾讯科技（深圳）有限公司 | Video encoding/decoding method, device, computer equipment and storage medium |
| CN110139104B (en) * | 2018-02-09 | 2023-02-28 | 腾讯科技（深圳）有限公司 | Video decoding method, video decoding device, computer equipment and storage medium |
| CN112738525A (en) * | 2020-12-11 | 2021-04-30 | 深圳万兴软件有限公司 | Video processing method, device and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6286718B2 (en) | Content adaptive bitrate and quality management using frame hierarchy responsive quantization for highly efficient next generation video coding | |
| CN105426883B (en) | The method and device that visual classification quickly identifies | |
| TW200818919A (en) | A method and apparatus for decoding/encoding a video signal | |
| Zhang et al. | Low-complexity and high-efficiency background modeling for surveillance video coding | |
| CN103338376A (en) | Video steganography method based on motion vector | |
| JP2002125233A (en) | Image compression system for weighting video contents | |
| CN103020138A (en) | Method and device for video retrieval | |
| US7408989B2 (en) | Method of video encoding using windows and system thereof | |
| CN105847822A (en) | Video decoding method and device | |
| CN106937127B (en) | Display method and system for intelligent search preparation | |
| CN103533353B (en) | A kind of near video coding system | |
| CN113366842B (en) | System and method for content layer based video compression | |
| US10997426B1 (en) | Optimal fragmentation of video based on shot analysis | |
| CN104168482B (en) | A kind of video coding-decoding method and device | |
| CN108668169B (en) | Image information processing method and device, and storage medium | |
| KR20210064587A (en) | High speed split device and method for video section | |
| KR20240006667A (en) | Point cloud attribute information encoding method, decoding method, device and related devices | |
| CN115834906A (en) | Video encoding and decoding method and device, electronic equipment and medium | |
| CN107018421B (en) | A kind of image sending, receiving method and device, system | |
| CN105847821A (en) | Video decoding method and device | |
| US10397609B2 (en) | Method and apparatus for predicting residual | |
| CN115550652A (en) | Context-based image coding and decoding | |
| Jubran et al. | Sequence-level reference frames in video coding | |
| KR20190067577A (en) | Apparatus and method for encoding and decoding of data | |
| US7706440B2 (en) | Method for reducing bit rate requirements for encoding multimedia data |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160810 |