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Method for scalable video coding

A technology for scaling and encoding data, applied in digital video signal modification, television, electrical components, etc., can solve problems such as optimization of encoding costs that do not allow high-resolution images

Inactive Publication Date: 2007-11-14
INTERDIGITAL VC HLDG INC
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  • Claims
  • Application Information

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Problems solved by technology

[0012] Therefore, the available coding modes do not allow to optimize the coding cost of high-resolution images, especially when the image resolution or format is not proportional

Method used

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  • Method for scalable video coding
  • Method for scalable video coding
  • Method for scalable video coding

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Embodiment Construction

[0057] The data encoding method described is a hierarchical encoding method, in other words, the encoded data stream is structured in a hierarchical manner, incorporating data related to the lowest resolution format into the bottom layer or lower layer, and combining data related to the higher resolution format Relevant supplementary data are incorporated above. By selecting only the layers corresponding to the desired resolution level, it is facilitated to select only data related to one standard or one format from the data stream. Here, it corresponds to spatial scalability, compatible with arbitrary temporal scalability required by standards related to resolution formats.

[0058] The invention relates to encoding video content having different formats, which may be different but have at least one common video part. The invention is especially suitable for formats that are not proportional in width and / or height of the image. One format has a lower resolution than the oth...

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Abstract

The method for inheriting coding data implements the following steps : - superimposition (4), after zooming and for the common video part, of an image (F2) (101) of low resolution onto an image (F1) (102) of higher resolution, - determination (61) of the number of zoomed BR blocks of F2 covering a HR block of F1, - if this number equals 1 (64), assignment of the mode and motion data (65) of the zoomed BR block to this HR image block, - if this number is greater than 1, assignment of a mode and of motion data (66) as a function of the modes and the motion data of the zoomed BR blocks covering this HR block, - merging neighbouring HR blocks depending on the similarity of the motion data and / or of the coding modes assigned to the HR blocks and assignment of the coding modes and motion data to the new blocks according to the coding modes and motion data of the merged blocks.

Description

technical field [0001] The invention relates to a method for performing scalable video encoding and decoding on a high-resolution image based on a lower-resolution image, in particular to a method for inheriting encoding data from a lower-resolution image to encode and decode a high-resolution image. [0002] The invention also relates to the generation of a video sequence bitstream. Said coded bitstream consists of coded video data, wherein each data item is described by means of a bitstream syntax which allows the identification and decoding of all components of said bitstream content. [0003] The domain is, for example, video complying with the MPEG family of video coding standards (e.g. MPEG-1, MPEG-2, MPEG-4) and the recommendations of the ITU-H.26X family (H.261, H.263 and extensions, H.264) compression. Background technique [0004] Video encoders with spatial scalability are known in the art. The data stream produced by the video encoder has a scalable hierarchy;...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/36H04N7/46
CPCH04N19/00684H04N19/00436H04N19/00818H04N19/00733H04N19/00757H04N7/26351H04N19/59H04N19/17H04N19/187H04N19/33H04N19/463H04N19/51H04N19/513H04N19/63H04N19/70
Inventor 格温埃利·马康尼古拉斯·比尔丹帕特里克·洛佩兹爱德华·弗朗索瓦丝纪尧姆·布瓦松
Owner INTERDIGITAL VC HLDG INC
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