CN109525842A - Location-based more Tile arranging and encoding method, apparatus, equipment and coding/decoding method - Google Patents
Location-based more Tile arranging and encoding method, apparatus, equipment and coding/decoding method Download PDFInfo
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- CN109525842A CN109525842A CN201811277399.2A CN201811277399A CN109525842A CN 109525842 A CN109525842 A CN 109525842A CN 201811277399 A CN201811277399 A CN 201811277399A CN 109525842 A CN109525842 A CN 109525842A
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- tile
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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
- H04N19/174—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 slice, e.g. a line of blocks or a group of blocks
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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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
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- Engineering & Computer Science (AREA)
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- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
More Tile arranging and encoding methods based on position correlation that the invention discloses a kind of, comprising steps of characterized in that it comprises the following steps: obtaining Tile fragment to be arranged；The arrangement of Tile fragment is carried out according to the positional relationship of Tile fragment.The positional relationship of Tile fragment specifically: the Tile fragment after ERP projection is subjected to position division according to different resolution ratio.The present invention passes through when decoding arranges Tile fragment, it is arranged according to the position correlation of Tile fragment, the Tile fragment in co-located region has equal resolution, it can be merged into a region when rendering after the decoding to be uniformly processed, processing speed is not only accelerated in this way, it is also avoided that the seam noise that two Tile fragment adjacents are likely to occur, reaches the performance for promoting Tile rendering by adjusting putting in order.
Description
Technical field
The present invention relates to field of video encoding, especially a kind of more Tile arranging and encoding methods based on position correlation,
Device, equipment and coding/decoding method.
Background technique
360 degree of videos: multiple angle shots are carried out to the object under the same space simultaneously using multiple video cameras, are obtained
Comprehensive 360 degree of videos shot show true scenario reduction with certain network technology on the internet entirely,
And there is stronger interactivity, and when carrying out 360 degree of video playings, allow user in the case where being not necessarily to suspend video playing, it can
Arbitrarily to adjust video free switching viewing angle up and down.
In the prior art, the transmission coding of video (such as 360 degree of videos) carries out the segmentation of Tile fragment, decoding using by video
After termination receives Tile fragment, according to Tile fragment coding, incremental sequence arranges Tile fragment, is decoded, but due to
The position correlation that Tile fragment is not accounted for when arrangement causes rendering treatment effeciency low, and it is possible to two Tile points
The problem of seam noise that the adjacent of piece will appear, therefore propose a kind of to improve treatment effeciency and reduce adjacent Tile point
The Tile fragment arranging and encoding method of the seam noise of piece is necessary.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
Purpose is to provide a kind of more Tile arranging and encoding method, apparatus, equipment and coding/decoding method based on position correlation.
The technical scheme adopted by the invention is that:
In a first aspect, the present invention provides a kind of more Tile arranging and encoding methods based on position correlation, comprising steps of
Obtain Tile fragment to be arranged；
The arrangement of Tile fragment is carried out according to the positional relationship of Tile fragment.
Further, the Tile fragment is the data fragmentation by ERP projection pattern.
Further, the positional relationship of the Tile fragment specifically: will by ERP projection after Tile fragment according to
Different resolution ratio carries out the positional relationship that position divides.
Further, described to carry out position to divide being specifically using first area resolution ratio as standard according to different resolution:
It is down-sampled that second area does 1/2 in horizontal resolution；
It is down-sampled that third region does 1/4 in horizontal resolution.
Further, the positional relationship of the Tile fragment specifically: the Tile fragment for being located at the same region is adjacent
Arrangement, the Tile fragment resolution ratio having the same positioned at the same region.
Further, the arrangement further includes, by the Tile fragment for being located at the same region sequence adjacent according to position
Arrangement.
Second aspect, the present invention provide a kind of more Tile permutation decoding methods based on position correlation, including such as first
The video data that any more Tile arranging and encoding methods based on position correlation obtain described in aspect will be same when rendering
The Tile fragment in one region is merged into a region and is handled.
Further, the minimum Tile fragment number needed for the Tile fragment number to be arranged of acquisition is less than decoding
When, use the remaining position of Tile fragment fills for being located at the most end that puts in order.
The third aspect, the present invention provide a kind of more Tile arranging and encoding devices based on position correlation, comprising:
Tile fragment to be arranged obtains module: for obtaining Tile fragment to be arranged；
Arrange module: for carrying out the arrangement of Tile fragment according to the positional relationship of Tile fragment.
Fourth aspect, the present invention provide a kind of control equipment of more Tile arranging and encodings based on position correlation, comprising:
At least one processor；And the memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes, so that at least one described processor is able to carry out method as described in relation to the first aspect.
The beneficial effects of the present invention are:
The present invention according to the position correlation of Tile fragment by being arranged, being located in coding permutations Tile fragment
The Tile fragment resolution ratio having the same in same position region, after the decoding render when can be merged into a region into
Row is uniformly processed, and not only accelerates processing speed in this way, moreover it is possible to which the seam for avoiding two Tile fragment adjacents from being likely to occur is made an uproar
Point reaches the performance for promoting Tile rendering by adjusting putting in order.
Detailed description of the invention
Fig. 1 a is spherical panoramic video schematic diagram；
Fig. 1 b is ERP perspective view；
Fig. 2 is more Tile arranging and encoding method flow diagrams in one embodiment of the present invention based on position correlation；
Fig. 3 is that the position Tile in one embodiment of the present invention by ERP mapping divides schematic diagram；
Fig. 4 is different resolution area schematic in one embodiment of the present invention；
Fig. 5 is that the existing sequence incremental according to Tile fragment coding arranges schematic diagram；
Fig. 6 is the practical ERP arrangement position of the Tile fragment received in one embodiment of the present invention；
Fig. 7 is the Tile fragment arrangement mode schematic diagram in one embodiment of the present invention based on position correlation；
Fig. 8 is more Tile arranging and encoding apparatus structure block diagrams in one embodiment of the present invention based on position correlation.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
In the prior art, 360 degree of spherical panoramic videos by processing acquisition mostly use, and spherical panoramic video is projected
ERP format video is formed on to 2D screen, most of shooting sequences are stored with ERP format.Equirectangular
Projection (ERP) is a kind of simple mapping mode, and warp is mapped as to the vertical line of constant space, weft is mapped as
The horizontal line of constant space.This projection pattern mapping relations are simple, but neither homalographic nor conformal, introduces
Sizable distortion.
It as shown in Figure 1a, is spherical panoramic video schematic diagram, visible video surrounds spherical surface in figure, is in 360 degree.
As shown in Figure 1 b, it is ERP perspective view, is equivalent to and a plane is stretched into the spherical video drawing of Fig. 1 a, realize
3D-2D conversion, wherein ERP is 360 degree of the plane of delineation, it can be seen that the south poles of high latitude are all stretched, and image is flat
The right boundary in face can be with doubling together.
Embodiment one:
As shown in Fig. 2, for more Tile arranging and encoding method flow diagrams based on position correlation in the present embodiment, including step
It is rapid: S1: to obtain Tile fragment to be arranged；S2: the arrangement of Tile fragment is carried out according to the positional relationship of Tile fragment.
Wherein Tile fragment is the data fragmentation by ERP projection pattern, the positional relationship of Tile fragment specifically: will be through
The Tile fragment crossed after ERP is projected carries out the positional relationship that position divides according to different resolution ratio.
As shown in figure 3, for the position the Tile division schematic diagram mapped by ERP, it can be seen that ball shown in Fig. 1 a in figure
Face panoramic video is divided into 42 Tile fragments after ERP maps, based on camera site, and coverage horizontal axis is [0,2 π],
The longitudinal axis is
As shown in figure 4, be different resolution area schematic, convenient for display, by the position Tile of Fig. 3 divide schematic diagram into
Row rearranges, visible in figure:
First area include: Tile fragment 9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,
25,26,27,28,29,30,31,32 }；
Second area includes: Tile fragment { 3,4,5,6,7,8,33,34,35,36,37,38 }；
Third region includes: Tile fragment { 0,1,2,39,40,41 }；
Wherein, comparison diagram 3 is as it can be seen that centered on longitudinal axis origin, and the south poles from the remoter high latitude with a distance from it of origin are closer,
It is considered that the content that its Tile video includes is relatively fewer, therefore Tile fragment position is divided according at a distance from longitudinal axis origin
Class is at three above-mentioned regions, i.e., the third region distance position that is farthest located at south poles, second area are in the firstth area farther out
Among domain and third region, first area is located at longitudinal axis origin two sides.
It is different since the Tile fragment after ERP projection is carried out position division according to different resolution ratio
Resolution ratio setting is as follows, and using first area resolution ratio as standard, second area does 1/2 down-sampled, third in horizontal resolution
It is down-sampled that region does 1/4 in horizontal resolution.Since third region is relatively more farther than second area, it is believed that it includes it is effective
Content is less, therefore 1/4 down-sampled, the Tile fragment resolution ratio having the same positioned at the same region is used to it.
Embodiment two:
According to embodiment one, when decoding, the Tile fragment in the same region is merged into a region and is handled.
In the present embodiment, it is assumed that when user decodes multiple Tile fragments for receiving be 3,8,9,10,19,20,21,22,
31,32,33,38 }, such 12 Tile fragments.
As shown in figure 5, arrange schematic diagram for the existing sequence incremental according to Tile fragment coding, wherein Tile fragment into
When row decoding, putting in order for Tile fragment is incremented by arrange according to Tile_id, due to the coding application currently based on Tile
In, when decoding, can download most M*N Tile fragments (such as Fig. 5, M=6, N=3, totally 18 Tile fragments), and at most this
M*N fragment is merged into Tile coding region all the way, gives hardware decoder and goes to decode, the Tile of this M*N fragment composition MxN
List.
When minimum number (M*N) needed for the Tile fragment number of downloading is less than decoding, need using suitable positioned at arranging
The remaining position of Tile fragment fills of sequence most end.
As shown in fig. 6, the practical ERP arrangement position of the Tile fragment received in the present embodiment, visible Tile points in figure
Adjacent between piece 8 and Tile fragment 3, Tile fragment 19 and Tile fragment 20 are adjacent, Tile fragment 20 and and 9 phase of Tile fragment
Neighbour, Tile fragment 9 is adjacent with Tile fragment 10, and Tile fragment 31 and Tile fragment 32 are adjacent, and Tile fragment 32 divides with Tile again
Piece 21 is adjacent, and Tile fragment 21 is adjacent with Tile fragment 22, and Tile fragment 38 is adjacent with Tile fragment 33, therefore according to adjacent pass
System, practical arrangement position with it is shown in fig. 5 according to incremental relationship arrangement it is not identical.
Therefore shown in available Fig. 7, the Tile fragment arrangement mode schematic diagram based on position correlation, wherein [8,3],
[19,20,9,10], [31,32,21,22], [38,33], and rest position is filled using Tile fragment 38, only in this way arrange
Column could make all adjacent Tile in position on ERP image, can be arranged together, and be easy to the same region
Tile fragment is merged into a region and is handled.
In the present embodiment, Tile fragment 8 and Tile fragment 3 or so are adjacent, and horizontal scaling ratio having the same, this
It can be merged into a region when sample is rendered after the decoding, be uniformly processed.Processing speed is not only accelerated in this way
Degree, moreover it is possible to which the seam noise for avoiding two Tile fragment adjacents from being likely to occur promotes Tile by adjusting putting in order to reach
The performance of rendering.
Embodiment three:
As shown in figure 8, for a kind of more Tile arranging and encoding apparatus structure block diagrams based on position correlation in the present embodiment,
Include:
Tile fragment to be arranged obtains module: for obtaining Tile fragment to be arranged；Arrange module: for according to Tile
The positional relationship of fragment carries out the arrangement of Tile fragment.
On the other hand, the present invention provides a kind of control equipment of more Tile arranging and encodings based on position correlation, comprising:
At least one processor；And the memory being connect at least one processor communication；Wherein, memory stores
There is the instruction that can be executed by least one described processor, instruction is executed by least one processor, so that at least one is handled
Device is able to carry out such as the method in embodiment one.
The present invention according to the position correlation of Tile fragment by being arranged, being located in coding permutations Tile fragment
The Tile fragment resolution ratio having the same in same position region, after the decoding render when can be merged into a region into
Row is uniformly processed, and not only accelerates processing speed in this way, moreover it is possible to which the seam for avoiding two Tile fragment adjacents from being likely to occur is made an uproar
Point reaches the performance for promoting Tile rendering by adjusting putting in order.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of more Tile arranging and encoding methods based on position correlation, which is characterized in that comprising steps of
Obtain Tile fragment to be arranged；
The arrangement of Tile fragment is carried out according to the positional relationship of Tile fragment.
2. a kind of more Tile arranging and encoding methods based on position correlation according to claim 1, which is characterized in that institute
Stating Tile fragment is the data fragmentation by ERP projection pattern.
3. a kind of more Tile arranging and encoding methods based on position correlation according to claim 1, which is characterized in that institute
State the positional relationship of Tile fragment specifically: the Tile fragment after ERP projection is subjected to position according to different resolution ratio
Set the positional relationship for dividing and obtaining.
4. a kind of more Tile arranging and encoding methods based on position correlation according to claim 3, which is characterized in that institute
It states and carries out position to divide being specifically using first area resolution ratio as standard according to different resolution:
It is down-sampled that second area does 1/2 in horizontal resolution；
It is down-sampled that third region does 1/4 in horizontal resolution.
5. a kind of more Tile arranging and encoding methods based on position correlation according to claim 4, which is characterized in that institute
State the positional relationship of Tile fragment specifically: the Tile fragment arranged adjacent in the same region will be located at, it is described positioned at same
The Tile fragment resolution ratio having the same in region.
6. a kind of more Tile arranging and encoding methods based on position correlation according to claim 5, which is characterized in that institute
Stating arrangement further includes, and the Tile fragment for being located at the same region is arranged according to the adjacent sequence in position.
7. a kind of more Tile permutation decoding methods based on position correlation, which is characterized in that including such as claim 1 to 6 institute
The video data that any more Tile arranging and encoding methods based on position correlation stated obtain, when rendering, by the same area
The Tile fragment in domain is merged into a region and is handled.
8. a kind of more Tile permutation decoding methods based on position correlation according to claim 7, which is characterized in that when
When minimum Tile fragment number needed for the Tile fragment number wait arrange obtained is less than decoding, put in order most using being located at
The remaining position of Tile fragment fills at end.
9. a kind of more Tile arranging and encoding devices based on position correlation characterized by comprising
Tile fragment to be arranged obtains module: for obtaining Tile fragment to be arranged；
Arrange module: for carrying out the arrangement of Tile fragment according to the positional relationship of Tile fragment.
10. a kind of control equipment of more Tile arranging and encodings based on position correlation characterized by comprising
At least one processor；And the memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
It manages device to execute, so that at least one described processor is able to carry out such as method as claimed in any one of claims 1 to 6.
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| CN201811277399.2A CN109525842B (en) | 2018-10-30 | 2018-10-30 | Position-based multi-Tile permutation coding method, device, equipment and decoding method |
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