CN104683820A - Loop filtering method and loop filter - Google Patents
Loop filtering method and loop filter Download PDFInfo
- Publication number
- CN104683820A CN104683820A CN201510091320.7A CN201510091320A CN104683820A CN 104683820 A CN104683820 A CN 104683820A CN 201510091320 A CN201510091320 A CN 201510091320A CN 104683820 A CN104683820 A CN 104683820A
- Authority
- CN
- China
- Prior art keywords
- filtering
- block elimination
- elimination filtering
- boundary
- unit
- 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.)
- Granted
Links
Abstract
The invention discloses a loop filtering method and a loop filter. The loop filter is applied in a video compression encoding and is capable of supporting two video compression encoding standards namely H.264 and H.265 and realizing the reuse of resources. The method includes the following steps: during a deblocking filter processing procedure, for each biggest coding unit, sequentially performing deblocking filter on each vertical edge of the edges to be filtered in the biggest coding unit from left to right; after deblocking filter is performed on each vertical edge, sequentially performing deblocking filter on each horizontal edge of the edges to be filtered in the biggest coding unit from top to bottom, wherein each of the vertical edges and the horizontal edges includes a plurality of unit data block edges, during the deblocking filter process, two unit data blocks adjacent to each unit data block edge are used as a filtering unit.
Description
Technical field
The present invention relates to technology of video compressing encoding field, particularly relate to a kind of loop circuit filtering method and loop filter.
Background technology
Loop filtering is as a pith of video compression coding, and major function carries out filtering to the reconstruction image that video compression coding process produces, and improves reconstructed image quality thus reaches the object improving image subjective effect and reduce code check.
In prior art, loop filtering carries out as unit with LCU (Largest Coding Unit, maximum coding unit).The video compression coding standard of current main flow is H.264 i.e. AVC (Advanced Video Coding, advanced video encoding) and be H.265 HEVC (High Efficiency Video Coding, efficient video coding).In h .264, loop filtering only comprises block elimination filtering process, removes the blocking artifact rebuild because of inverse transformation, inverse quantization appearance during coding in image; In H.265, loop filtering not only comprises block elimination filtering process, also comprises sampled point self adaptation migration processing, selects the partial pixel point rebuild in image to be that it adds an optimum deviant adaptively, makes reconstruction image closer to original image.
Although the loop filtering H.264 and H.265 all comprises block elimination filtering process, concrete filtering algorithm is also similar, H.264 different with the filter range of block elimination filtering process H.265, and namely border to be filtered is different.Further, in block elimination filtering process H.264 and H.265, division, the filter sequence of filter unit are all different, therefore, need two cover resources realize respectively H.264 and H.265 in block elimination filtering process, can not resource multiplex be carried out.
Summary of the invention
The embodiment of the present invention provides a kind of loop circuit filtering method and loop filter, can support H.264 and H.265 two kinds of video compression coding standards simultaneously, achieve resource multiplex.
First aspect, provides a kind of loop circuit filtering method, is applied in video compression coding, comprises:
In block elimination filtering processing procedure, perform for each maximum coding unit:
To each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
After block elimination filtering is carried out to each vertical boundary, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, described carry out block elimination filtering time, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
In conjunction with first aspect, in the implementation that the first is possible, to each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right, specifically comprise:
For every bar vertical boundary, interval preset duration after block elimination filtering is carried out to the left neighboring vertical border of this vertical boundary, then block elimination filtering is carried out to this vertical boundary;
To each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom, specifically comprise:
For every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
In conjunction with first aspect, or in conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, to each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right, specifically comprise:
When carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out;
To each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom, specifically comprise:
When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
In conjunction with first aspect, the first possible implementation of first aspect, or the implementation that the second of first aspect is possible, in the implementation that the third is possible, also comprise:
In block elimination filtering processing procedure, for each filter unit, data before the block elimination filtering that after using block elimination filtering, data cover stores.
Second aspect, provides a kind of loop filter, is applied in video compression coding, comprises block elimination filtering unit;
Described block elimination filtering unit is used in block elimination filtering processing procedure, performs for each maximum coding unit:
To each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
After block elimination filtering is carried out to each vertical boundary, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, described carry out block elimination filtering time, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
In conjunction with second aspect, in the implementation that the first is possible, described block elimination filtering unit, specifically for for every bar vertical boundary, interval preset duration after block elimination filtering is carried out to the left neighboring vertical border of this vertical boundary, then block elimination filtering is carried out to this vertical boundary; For every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
In conjunction with second aspect, or in conjunction with the first possible implementation of second aspect, in the implementation that the second is possible, described block elimination filtering unit, specifically for when carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out; When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
In conjunction with second aspect, the first possible implementation of second aspect, or the implementation that the second of second aspect is possible, in the implementation that the third is possible, described block elimination filtering unit, also in block elimination filtering processing procedure, for each filter unit, data before the block elimination filtering that after using block elimination filtering, data cover stores.
According to the loop circuit filtering method that first aspect provides, the loop filter that second aspect provides, in block elimination filtering processing procedure, for each LCU, the each vertical boundary first treated in filtering boundary carries out block elimination filtering successively, then carries out block elimination filtering successively to each horizontal boundary; Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, when carrying out block elimination filtering, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.According to division and this filter sequence of this filter unit, can meet H.264 and the H.265 requirement of the filter range of block elimination filtering process in two kinds of video compression coding standards simultaneously, therefore, only need the block elimination filtering process that H.264 and H.265 a set of resource just can realize, namely achieve resource multiplex.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, is not construed as limiting the invention with the embodiment of the present invention one.In the accompanying drawings:
The schematic diagram of the loop circuit filtering method that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the schematic diagram of the filter range of H.265 middle brightness block elimination filtering process;
The schematic diagram of the H.265 middle brightness block elimination filtering process that Fig. 3 provides for the embodiment of the present invention;
One of schematic diagram of the H.265 loop filter method that Fig. 4 provides for the embodiment of the present invention;
The schematic diagram two of the H.265 loop filter method that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the schematic diagram of the filter range of H.264 middle brightness block elimination filtering process;
The schematic diagram of the H.264 middle brightness block elimination filtering process that Fig. 7 provides for the embodiment of the present invention;
The schematic diagram of the H.264 middle chroma deblocking filtering process that Fig. 8 provides for the embodiment of the present invention;
The schematic diagram of the realizing circuit of the strong filtering of brightness that Fig. 9 provides for the embodiment of the present invention.
Embodiment
In order to provide support H.264 simultaneously and H.265 two kinds of video compression coding standards, realize the scheme of resource multiplex, embodiments provide a kind of loop circuit filtering method and loop filter, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein, only for instruction and explanation of the present invention, is not intended to limit the present invention.And when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Embodiments provide a kind of loop circuit filtering method, be applied in video compression coding, in block elimination filtering processing procedure, perform step shown in Fig. 1 for each maximum coding unit:
Step 101, to each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
Step 102, block elimination filtering is carried out to each vertical boundary after, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, when carrying out block elimination filtering, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
Concrete, above-mentioned unit data block is 4 × 4 data blocks.
Namely the block elimination filtering process in the loop circuit filtering method that provides of the embodiment of the present invention, with two 4 × 4 data blocks for filter unit, first carry out the block elimination filtering of vertical boundary, then carry out the block elimination filtering of horizontal boundary, concrete filtering algorithm is identical with prior art, is not described in detail in this.Under this block elimination filtering order, whole block elimination filtering processing procedure can adopt full flowing water to design, there are in each filter unit 4 row (column) data, every row (column) data have 8 data, each row (column) data are sent on filtering streamline successively, filtering was calculated without free time, and therefore, filtration efficiency is higher.
Concrete, above-mentioned block elimination filtering process is divided into the process of brightness block elimination filtering and chroma deblocking filtering process.
In embodiments of the present invention, the process of brightness block elimination filtering and chroma deblocking filtering process can parallel processings, are independent of each other.Namely for each LCU, in a flow process, perform the process of brightness block elimination filtering, be specially: first treat each vertical boundary in filtering boundary, carry out brightness block elimination filtering successively according to order from left to right, again to each horizontal boundary, carry out brightness block elimination filtering successively according to order from top to bottom; In another flow process, perform chroma deblocking filtering process simultaneously, be specially: first treat each vertical boundary in filtering boundary, carry out chroma deblocking filtering successively according to order from left to right, then to each horizontal boundary, carry out chroma deblocking filtering successively according to order from top to bottom; These two flow processs are parallel.
H.265 in, for each LCU, the filter range of brightness block elimination filtering process, namely border to be filtered is as shown in thick line in Fig. 2, comprise 8 vertical boundaries and 8 horizontal boundaries, in every bar vertical boundary and every bar horizontal boundary, include 16 unit data block boundaries.The method adopting the embodiment of the present invention to provide, when carrying out the process of brightness block elimination filtering, first can carry out the brightness block elimination filtering of vertical boundary, then carrying out the brightness block elimination filtering of horizontal boundary.When carrying out the brightness block elimination filtering of vertical boundary, the division of filter unit, filter sequence are as shown in Figure 3, two unit data blocks that each oval frame is corresponding are a filter unit, the numeral at oval frame center is filter unit mark, when carrying out the brightness block elimination filtering of vertical boundary, according to the order of filter unit mark, each filter unit is processed.When carrying out the brightness block elimination filtering of horizontal boundary, division, the filter sequence of filter unit are all similar to the brightness block elimination filtering of vertical boundary.
H.265, in, when carrying out chroma deblocking filtering process, the filter unit dividing mode identical with the process of brightness block elimination filtering and filter sequence can be adopted, be not described in detail in this.Further, chroma deblocking filtering process is divided into again the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking, concrete, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking can sequentially be carried out, namely for each LCU, first carry out the filtering of Cb chroma deblocking and carry out the filtering of Cr chroma deblocking again, or first carry out the filtering of Cr chroma deblocking and carry out the filtering of Cb chroma deblocking again.
Further, H.265, loop filtering also comprises sampled point self adaptation migration processing.Because the block elimination filtering treatment effeciency in the loop circuit filtering method that the embodiment of the present invention provides is higher, therefore in block elimination filtering processing procedure, for each filter unit, data before the block elimination filtering that after can using block elimination filtering, data cover stores, therefore can realize sampled point self adaptation migration processing and block elimination filtering process is arranged in a pipelining-stage.After completing the process of brightness block elimination filtering, the brightness statistics of sampled point self adaptation skew can be started, carry out subsequent step; After completing chroma deblocking filtering process, the chromaticity statistics of sampled point self adaptation skew can be started, carry out subsequent step, as shown in Figure 4.
After pipelining-stage merges, as shown in Figure 5, before block elimination filtering after data and block elimination filtering deposit data at one piece of single port RAM (Random Access Memory, random asccess memory) in, i.e. reconstructed image R AM in Fig. 5, no longer need RAM data cached between block elimination filtering process and sampled point self adaptation migration processing, sampled point self adaptation migration processing directly reads data from reconstructed image R AM.And after pipelining-stage merges, also only need the RAM buffer memory raw image data of a LCU size, i.e. original image RAM in Fig. 5.Compared to prior art, greatly save storage resources.
According to dividing mode, the filter sequence of above-mentioned filter unit, H.265, between filter unit, there is not data feedback.But, H.264, because filter range is different, between filter unit, there is data feedback.Such as, H.264, for each LCU, the filter range of brightness block elimination filtering process, namely border to be filtered is as shown in thick line in Fig. 6, comprises 4 vertical boundaries and 4 horizontal boundaries, has included 4 unit data block boundaries in every bar vertical boundary and every bar horizontal boundary.According to the method that the embodiment of the present invention provides, certainly exist the adjacent filter unit with overlapped data block, between the adjacent filter unit namely with overlapped data block, there is data feedback.
H.264 in, in order to ensure to exist data feedback adjacent filter unit between there is enough buffer time, to each vertical boundary in the border to be filtered of this maximum coding unit, when carrying out block elimination filtering successively according to order from left to right, can for every bar vertical boundary, interval preset duration after block elimination filtering is carried out to the left neighboring vertical border of this vertical boundary, then block elimination filtering is carried out to this vertical boundary; To each horizontal boundary in the border to be filtered of this maximum coding unit, when carrying out block elimination filtering successively according to order from top to bottom, can for every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
Such as, to carry out brightness block elimination filtering to each vertical boundary successively according to order from left to right, the mode of Fig. 7 can be adopted, for each LCU, by realizing interval preset duration carrying out read-write to the part filter unit in LCU adjacent on this LCU, namely only read and write for filter unit in Fig. 70, filter unit 5, filter unit 10, filter unit 15, do not carry out brightness block elimination filtering.When carrying out the brightness block elimination filtering of horizontal boundary, division, the filter sequence of filter unit are all similar to the brightness block elimination filtering of vertical boundary.
Preferably, H.264, have enough buffer time in order between the adjacent filter unit that ensures further to there is data feedback, when carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking can interleave to be carried out; When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
Such as shown in Fig. 8, be when carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave a kind of mode of carrying out, and left side is Cb chroma deblocking filtering schematic diagram, and right side is Cr chroma deblocking filtering schematic diagram.Namely for every bar vertical boundary, first carry out the Cb chroma deblocking filtering of this vertical boundary, carry out the Cr chroma deblocking filtering of this vertical boundary again, and then carry out the Cb chroma deblocking filtering on right neighboring vertical border of this vertical boundary, then carry out the Cr chroma deblocking filtering on this right neighboring vertical border.Be only the filtering of Cb chroma deblocking shown in Fig. 8 and the filtering of Cr chroma deblocking interleaves an example of carrying out, be not intended to limit the present invention.
In sum, adopt the embodiment of the present invention to provide loop circuit filtering method to support H.264 and H.265 two kinds of video compression coding standards simultaneously, only need the block elimination filtering process that H.264 and H.265 a set of resource just can realize, namely achieve resource multiplex.During concrete enforcement, can in H.264 and H.265 deblocking filter algorithm, publicly-owned or close part merges, multiplexing computational resource.
Be described with the example that is fused to of the strong filtering part of brightness in block elimination filtering process below.Before the strong filtering of brightness, the data line of a filter unit is p3, p2, p1, p0, q0, q1, q2, q3, and the strong filtered the row data of brightness are p3, p'2, p'1, p'0, q'0, q'1, q'2, q3.In h .264, brightness strong filtering computing formula is as follows:
p'0＝(p2+2×p1+2×p0+2×q0+q1+4)>>3
p'1＝(p2+p1+p0+q0+2)>>2
p'2＝(2×p3+3×p2+p1+p0+q0+4)>>3
q'0＝(p1+2×p0+2×q0+2×q1+q2+4)>>3
q'1＝(p0+q0+q1+q2+2)>>2
q'2＝(2×q3+3×q2+q1+q0+p0+4)>>3
In H.265, brightness strong filtering computing formula is as follows, and tc is filter factor:
p'0＝Clip3(p0-2×tc，p0+2×tc，(p2+2×p1+2×p0+2×q0+q1+4)>>3)
p'1＝Clip3(p1-2×tc，p1+2×tc，(p2+p1+p0+q0+2)>>2)
p'2＝Clip3(p2-2×tc，p2+2×tc，(2×p3+3×p2+p1+p0+q0+4)>>3)
q'0＝Clip3(q0-2×tc，q0+2×tc，(p1+2×p0+2×q0+2×q1+q2+4)>>3)
q'1＝Clip3(q1-2×tc，q1+2×tc，(p0+q0+q1+q2+2)>>2)
q'2＝Clip3(q2-2×tc，q2+2×tc，(p0+q0+q1+3×q2+2×q3+4)>>3)
Wherein, thickened portion is reusable part, and the realizing circuit of the strong filtering part of brightness after therefore merging as shown in Figure 9.
For the other parts in block elimination filtering process, such as filtering parameter calculating section, the weak filtering part of brightness are graded, and all can adopt aforesaid way, extract publicly-owned or close part in computing formula and carry out the fusion of realizing circuit, no longer illustrate at this.
Based on same inventive concept, according to the loop circuit filtering method that the above embodiment of the present invention provides, correspondingly, another embodiment of the present invention additionally provides a kind of loop filter, is applied in video compression coding, comprises block filter unit;
Block elimination filtering unit is used in block elimination filtering processing procedure, performs for each maximum coding unit:
To each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
After block elimination filtering is carried out to each vertical boundary, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, when carrying out block elimination filtering, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
Further, block elimination filtering unit, specifically for for every bar vertical boundary, carries out interval preset duration after block elimination filtering to the left neighboring vertical border of this vertical boundary, then carries out block elimination filtering to this vertical boundary; For every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
Further, block elimination filtering unit, specifically for when carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out; When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
Further, block elimination filtering unit, also in block elimination filtering processing procedure, for each filter unit, data before the block elimination filtering that after using block elimination filtering, data cover stores.Now, if also comprise sampled point self adaptation offset units in loop filter, sampled point self adaptation offset units and block elimination filtering unit can be arranged in a pipelining-stage.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing specific function in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes specific function in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing specific function in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a loop circuit filtering method, is applied in video compression coding, it is characterized in that, comprising:
In block elimination filtering processing procedure, perform for each maximum coding unit:
To each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
After block elimination filtering is carried out to each vertical boundary, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, described carry out block elimination filtering time, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
2. the method for claim 1, is characterized in that, to each vertical boundary in the border to be filtered of this maximum coding unit, carries out block elimination filtering successively, specifically comprise according to order from left to right:
For every bar vertical boundary, interval preset duration after block elimination filtering is carried out to the left neighboring vertical border of this vertical boundary, then block elimination filtering is carried out to this vertical boundary;
To each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom, specifically comprise:
For every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
3. method as claimed in claim 1 or 2, is characterized in that, to each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively, specifically comprise according to order from left to right:
When carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out;
To each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom, specifically comprise:
When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
4. the method as described in as arbitrary in claim 1-3, is characterized in that, also comprise:
In block elimination filtering processing procedure, for each filter unit, data before the block elimination filtering that after using block elimination filtering, data cover stores.
5. a loop filter, is applied in video compression coding, it is characterized in that, comprises block elimination filtering unit;
Described block elimination filtering unit is used in block elimination filtering processing procedure, performs for each maximum coding unit:
To each vertical boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from left to right;
After block elimination filtering is carried out to each vertical boundary, to each horizontal boundary in the border to be filtered of this maximum coding unit, carry out block elimination filtering successively according to order from top to bottom;
Wherein, each vertical boundary, each horizontal boundary comprise multiple unit data block boundary, described carry out block elimination filtering time, using adjacent two the unit data blocks of each unit data block boundary as a filter unit.
6. loop filter as claimed in claim 5, it is characterized in that, described block elimination filtering unit, specifically for for every bar vertical boundary, interval preset duration after block elimination filtering is carried out to the left neighboring vertical border of this vertical boundary, then block elimination filtering is carried out to this vertical boundary; For every bar horizontal boundary, interval preset duration after block elimination filtering is carried out to the upper adjacent level border of this horizontal boundary, then block elimination filtering is carried out to this horizontal boundary.
7. the loop filter as described in claim 5 or 6, is characterized in that, described block elimination filtering unit, and specifically for when carrying out chroma deblocking filtering to each vertical boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out; When carrying out chroma deblocking filtering to each horizontal boundary, the filtering of Cb chroma deblocking and the filtering of Cr chroma deblocking interleave to be carried out.
8. the loop filter as described in as arbitrary in claim 5-7, is characterized in that, described block elimination filtering unit, also in block elimination filtering processing procedure, for each filter unit, and data before the block elimination filtering that after using block elimination filtering, data cover stores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091320.7A CN104683820B (en) | 2015-02-28 | 2015-02-28 | A kind of loop circuit filtering method and loop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510091320.7A CN104683820B (en) | 2015-02-28 | 2015-02-28 | A kind of loop circuit filtering method and loop filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104683820A true CN104683820A (en) | 2015-06-03 |
| CN104683820B CN104683820B (en) | 2018-03-06 |
Family
ID=53318300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510091320.7A Active CN104683820B (en) | 2015-02-28 | 2015-02-28 | A kind of loop circuit filtering method and loop filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104683820B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454997A (en) * | 2020-09-23 | 2021-09-28 | 深圳市大疆创新科技有限公司 | Video encoding apparatus, method, computer storage medium, and removable platform |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101304526A (en) * | 2007-05-09 | 2008-11-12 | 安凯（广州）软件技术有限公司 | Parallel processing method for de-locking filtering in video encoding/decoding system |
| CN101951519A (en) * | 2010-10-12 | 2011-01-19 | 西安电子科技大学 | High speed de-blocking effect filtering method |
| CN103220529A (en) * | 2013-04-15 | 2013-07-24 | 北京大学 | Method for achieving video coding and decoding loop filtering |
-
2015
- 2015-02-28 CN CN201510091320.7A patent/CN104683820B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101304526A (en) * | 2007-05-09 | 2008-11-12 | 安凯（广州）软件技术有限公司 | Parallel processing method for de-locking filtering in video encoding/decoding system |
| CN101951519A (en) * | 2010-10-12 | 2011-01-19 | 西安电子科技大学 | High speed de-blocking effect filtering method |
| CN103220529A (en) * | 2013-04-15 | 2013-07-24 | 北京大学 | Method for achieving video coding and decoding loop filtering |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113454997A (en) * | 2020-09-23 | 2021-09-28 | 深圳市大疆创新科技有限公司 | Video encoding apparatus, method, computer storage medium, and removable platform |
| WO2022061613A1 (en) * | 2020-09-23 | 2022-03-31 | 深圳市大疆创新科技有限公司 | Video coding apparatus and method, and computer storage medium and mobile platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104683820B (en) | 2018-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2012327672B2 (en) | Method and apparatus for non-cross-tile loop filtering | |
| CN104702963B (en) | The boundary processing method and device of a kind of adaptive loop filter | |
| CN105898335B (en) | Promote the loop circuit filtering method and loop filter of hardware efficiency | |
| CN103947208B (en) | Reduce the method and device of deblocking filter | |
| JP2018532318A (en) | Method and apparatus for evolutionary deblocking filter in video coding | |
| JP7350082B2 (en) | Loop filtering method, apparatus and computer storage medium | |
| CN103051892B (en) | Embedded loop filter method and embedded loop filter | |
| WO2012096623A1 (en) | Deblocking filtering | |
| EP2880856A1 (en) | Method and apparatus for sample adaptive offset in a video decoder | |
| CN110234012A (en) | The device of intra-loop filtering for the lossless coding mode in high-performance video coding | |
| Zhang et al. | Adaptive loop filter with temporal prediction | |
| US10944997B2 (en) | Method and apparatus of video coding | |
| CA2844761C (en) | Method and apparatus of deblocking filter with simplified boundary strength decision | |
| CN104253998A (en) | Hardware on-chip storage method of deblocking effect filter applying to HEVC (High Efficiency Video Coding) standard | |
| CN104756492A (en) | Method and apparatus for deblocking-filtering second image from encoding information on first image in stereoscopic video | |
| CN104683820A (en) | Loop filtering method and loop filter | |
| CN103491372A (en) | Filtering method of blocking-removing filter suitable for HEVC standard | |
| Eldeken et al. | High throughput parallel scheme for HEVC deblocking filter | |
| CN107172423B (en) | A kind of method and device that video frame is filtered | |
| US20140056363A1 (en) | Method and system for deblock filtering coded macroblocks | |
| JP7260638B2 (en) | Deblocking between block boundaries and sub-block boundaries in a video encoder and/or video decoder | |
| CN105530519B (en) | A kind of intra-loop filtering method and device | |
| CN110249630B (en) | Deblocking filter apparatus, method and storage medium | |
| Kthiri et al. | A parallel hardware architecture of deblocking filter in H264/AVC | |
| JP7387878B2 (en) | Deblocking filter selection in video or image coding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |