CN106488241A - A kind of area-of-interest method to set up - Google Patents
A kind of area-of-interest method to set up Download PDFInfo
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- CN106488241A CN106488241A CN201610895201.1A CN201610895201A CN106488241A CN 106488241 A CN106488241 A CN 106488241A CN 201610895201 A CN201610895201 A CN 201610895201A CN 106488241 A CN106488241 A CN 106488241A
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- 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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- 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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/124—Quantisation
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- 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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
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- 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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/167—Position within a video image, e.g. region of interest [ROI]
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The present invention discloses a kind of area-of-interest method to set up, comprises the following steps：Step 1：Area-of-interest is selected in units of macro block in whole picture；Step 2：The difference value of the quantization parameter between arranging inside and outside area-of-interest；Step 3：Encoder arranges the quantization parameter of each macro block according to set difference value in the range of Rate Control；Step 4：Encoder encodes to determine picture quality according to different quantization parameters.Method provided by the present invention, is not take up unnecessary encoding strip thereof, area-of-interest number is not limited, and area-of-interest picture quality is better than non-image of interest quality.
Description
Technical field
The present invention relates to a kind of coding and decoding video field, in particular, is related to a kind of flexible and efficient area-of-interest
Method to set up.
Background technology
Area-of-interest (ROI) can draw will set area-of-interest on the basis of transmission bandwidth is not increased
Matter is apparent, and the image quality that does not go outside care area-of-interest.Using ROI technology, area-of-interest image quality was both can guarantee that, and
Can guarantee that transmission is limited less than bandwidth.
Traditional ROI is particularly the ROI of SVAC and realizes then increasing a special encoding strip thereof, so both increased transmission
Bandwidth, in addition also results in certain pressure to decoder, is unfavorable for realizing in a device.
In addition traditional SVAC ROI is also restricted to the setting number of area-of-interest, it is impossible to arbitrarily arrange the number of ROI
Mesh, setting area can only also be confined to rectangle frame.
Content of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provides a kind of area-of-interest method to set up, solves
Each ROI present in above-mentioned prior art is required for an independent encoding strip thereof, increased transmission bandwidth；ROI number has
Limit；ROI shape can only be the technical problem of rectangle frame.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows：
A kind of area-of-interest method to set up, comprises the following steps：
Step 1：Area-of-interest is selected in units of macro block in whole picture；
Step 2：The difference value of the quantization parameter between arranging inside and outside area-of-interest；
Step 3：Encoder arranges the quantization ginseng of each macro block according to set difference value in the range of Rate Control
Number；
Step 4：Encoder encodes to determine picture quality according to different quantization parameters.
The area-of-interest is arbitrary shape.
The area-of-interest is one or more.
The step 2 arrange area-of-interest inside and outside between the concrete grammar of difference value of quantization parameter be：User's root
According to the of poor quality arranging difference value of required area-of-interest and regions of non-interest, difference value span is 0 to 6,
Wherein 0 is that 6 is maximum difference without difference, and difference shows that more greatly the picture quality of area-of-interest is better.
Step 3 encoder arranges the quantization of each macro block according to set difference value in the range of Rate Control
The concrete grammar of parameter is：After encoder receives the difference value of setting, determined according to set code check first and entirely regard
The quantization parameter of frequency frame, is designated as Q, and difference value is designated as delta, then the quantized value in area-of-interest is Q-delta, region of interest
Overseas quantized value is Q+delta.
To the area-of-interest combined with intelligent algorithm, being capable of dynamic setting.
The intelligent algorithm includes face recognition algorithms, when face is recognized, the human face region for recognizing is set to
Area-of-interest, then, when face is moved, area-of-interest also dynamic can be arranged, and so can guarantee that the picture quality of face than non-sense
Interest region is good.
Quantized value in area-of-interest is set to Q+delta, regions of non-interest quantized value is set to Q-delta, then feels
Interest area image quality is poorer than regions of non-interest, and the picture quality so as to realize area-of-interest is inverted.
The present invention is as follows due to employing technique scheme, its advantage：
1) unnecessary encoding strip thereof is not take up, bandwidth is saved, alleviate decoding pressure；
2) area-of-interest can be arbitrarily set in whole picture in units of macro block, limits without number；
3) combined with intelligent algorithm, can dynamic setting area-of-interest；
4) not only can make area-of-interest than outside picture quality good, can also realize reversion, the overseas ratio of region of interest
Within picture quality good.
Description of the drawings
Fig. 1 is method flow diagram provided by the present invention.
Specific embodiment
Technical solution of the present invention is made a detailed description with reference to Figure of description and specific embodiment.
Shown in Fig. 1, flexible and efficient area-of-interest method to set up provided by the present invention is as follows including step：
Step 1：Area-of-interest is selected in units of macro block in whole picture；
Step 2：The difference value of the quantization parameter between arranging inside and outside area-of-interest；
Step 3：Encoder arranges the quantization ginseng of each macro block according to set difference value in the range of Rate Control
Number；
Step 4：Encoder is encoded according to different quantization parameters.
To there is multiple control points interested in monitoring range, and in the case of control point interested is irregular, using this
Method more flexibly can not limit number, not limit the setting area-of-interest of shape.
In conjunction with face recognition algorithms, human face region can be set to area-of-interest.It is implemented as：Recognition of face is calculated
The region at face place when method detects face, can be given, the region be set to area-of-interest, the figure of face can be improved
As quality.
License plate area can be set to area-of-interest in conjunction with Recognition Algorithm of License Plate.It is implemented as：Car license recognition is calculated
The region at car plate place when method detects car plate, can be given, the region be set to area-of-interest, license plate image can be improved
Quality.
For some privacy situations, the face of such as VIP, in conjunction with face recognition algorithms, face recognition algorithms are examined
The face area for measuring is set to area-of-interest, and by its quality reversion, this makes the picture quality of face than the image of background
Of poor quality, so as to realize protecting the purpose of its privacy.
Above-described embodiment is merely to illustrate technical solution of the present invention, but its be not for limiting the present invention.Any ability
Field technique personnel without departing from the spirit and scope of the present invention, may be by the content of the disclosure above to proposed by the invention
Scheme make possible variation and modification, therefore, every technology contents without departing from the present invention, according to the present invention technology reality
Any simple modification, equivalent variations and modification that confrontation above example is made, belong to protection scope of the present invention.
Claims (8)
1. a kind of area-of-interest method to set up, it is characterised in that comprise the following steps：
Step 1：Area-of-interest is selected in units of macro block in whole picture；
Step 2：The difference value of the quantization parameter between arranging inside and outside area-of-interest；
Step 3：Encoder arranges the quantization parameter of each macro block according to set difference value in the range of Rate Control；
Step 4：Encoder encodes to determine picture quality according to different quantization parameters.
2. area-of-interest method to set up according to claim 1, it is characterised in that the area-of-interest is arbitrary shape
Shape.
3. area-of-interest method to set up according to claim 1, it is characterised in that the area-of-interest be one or
Multiple.
4. area-of-interest method to set up according to claim 1, it is characterised in that the step 2 arranges region of interest
The concrete grammar of the difference value of the quantization parameter between domain is inside and outside is：User is according to required area-of-interest and non-interested
Region of poor quality arranging difference value, difference value span is 0 to 6, and wherein 0 is that 6 is maximum difference, poor without difference
The different picture quality for showing more greatly area-of-interest is better.
5. area-of-interest method to set up according to claim 4, it is characterised in that step 3 encoder is according to institute
The difference value of setting, the concrete grammar for arranging the quantization parameter of each macro block in the range of Rate Control is：Encoder is received
After the difference value of setting, determine the quantization parameter of whole frame of video first according to set code check, Q is designated as, difference value is remembered
For delta, then the quantized value in area-of-interest is Q-delta, and the overseas quantized value of region of interest is Q+delta.
6. area-of-interest method to set up according to claim 1, it is characterised in that intelligence is combined to the area-of-interest
Energy algorithm, being capable of dynamic setting.
7. area-of-interest method to set up according to claim 1, it is characterised in that the intelligent algorithm includes that face is known
Other algorithm, when face is recognized, the human face region for recognizing is set to area-of-interest, then when face is moved, interested
Region also dynamic can be arranged, and so can guarantee that the picture quality of face is better than regions of non-interest.
8. area-of-interest method to set up according to claim 5, it is characterised in that by the quantized value in area-of-interest
Q+delta is set to, regions of non-interest quantized value is set to Q-delta, then area-of-interest picture quality compares regions of non-interest
Difference, the picture quality so as to realize area-of-interest are inverted.
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| CN201610895201.1A CN106488241A (en) | 2016-10-13 | 2016-10-13 | A kind of area-of-interest method to set up |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418142A (en) * | 2019-08-06 | 2019-11-05 | 杭州微帧信息科技有限公司 | A kind of coding method based on video interested region, device, storage medium |
| CN110855989A (en) * | 2019-10-14 | 2020-02-28 | 深圳市天视通电子科技有限公司 | Network video image coding method and device |
| CN111131825A (en) * | 2019-10-28 | 2020-05-08 | 华为技术有限公司 | Video processing method and related device |
| CN111918066A (en) * | 2020-09-08 | 2020-11-10 | 北京字节跳动网络技术有限公司 | Video encoding method, device, equipment and storage medium |
| CN112153317A (en) * | 2020-09-25 | 2020-12-29 | 杭州涂鸦信息技术有限公司 | Image quality control method, system and equipment thereof |
| CN113011210A (en) * | 2019-12-19 | 2021-06-22 | 北京百度网讯科技有限公司 | Video processing method and device |
| CN115002512A (en) * | 2022-05-23 | 2022-09-02 | 北京市商汤科技开发有限公司 | Video transcoding method and device, electronic equipment and storage medium |
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| CN112153317A (en) * | 2020-09-25 | 2020-12-29 | 杭州涂鸦信息技术有限公司 | Image quality control method, system and equipment thereof |
| CN115002512A (en) * | 2022-05-23 | 2022-09-02 | 北京市商汤科技开发有限公司 | Video transcoding method and device, electronic equipment and storage medium |
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