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Combined scalability processing for multi-layer video coding

A video encoding and encoding technology, applied in image data processing, image data processing, digital video signal modification, etc.

Active Publication Date: 2016-08-17
VID SCALE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Known SVC video coding implementations (e.g. exploiting spatial scalability) have proven efficient for encoding HD video signals, but have drawbacks when dealing with digital video signals that extend beyond HD resolution (e.g. UHD video signals)

Method used

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  • Combined scalability processing for multi-layer video coding
  • Combined scalability processing for multi-layer video coding
  • Combined scalability processing for multi-layer video coding

Examples

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Embodiment Construction

[0030] figure 1 is a simplified block diagram depicting an example block-based hybrid scalable video coding (SVC) system. The spatial and / or temporal signal resolution represented by layer 1 (eg, base layer) may be generated by downsampling the input video signal. In subsequent encoding stages, the setting of a quantizer such as Q1 results in a quality level of the underlying information. One or more subsequent higher layers may be encoded and / or decoded using the base layer reconstruction Y1, which may represent an approximation to the higher layer resolution level. The upsampling unit may perform upsampling of the base layer reconstructed signal to a layer 2 resolution. Downsampling and / or upsampling may be performed across multiple layers (eg, for N layers, layers 1, 2...N). Downsampling and / or upsampling rates may differ according to, for example, a dimension of scalability between two layers.

[0031] exist figure 1 In an example scalable video coding system of , for...

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Abstract

A video coding system may perform inter-layer processing by simultaneously performing inverse tone mapping and color gamut conversion scalability processes on a base layer of a video signal. The video coding system may then perform upsampling on the processed base layer. The processed base layer may be used to code an enhancement layer. Bit depth may be considered for color gamut conversion modules. Luma and / or chroma bit depths may be aligned with respective larger or smaller bit depth values of luma and / or chroma.

Description

[0001] cross reference [0002] This application claims the benefit of U.S. Provisional Patent Application No. 61 / 887,782, filed October 7, 2013, and U.S. Provisional Patent Application No. 62 / 045,495, filed September 3, 2014, the contents of which are incorporated by reference in their entirety way combined here. Background technique [0003] As digital display technology evolves, display resolution continues to increase. For example, high definition (HD) digital video streaming, which recently embodies the best commercial display resolutions available, is about to be surpassed by ultra high definition (UHD) displays (eg, 4K displays, 8K displays, etc.). [0004] Video coding systems are often used to compress digital video signals, eg, to reduce consumed storage space and / or reduce transmission bandwidth consumption associated with such signals. Scalable Video Coding (SVC) has been shown to improve the quality of experience of video applications running on devices with dif...

Claims

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Application Information

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IPC IPC(8): H04N19/30H04N19/186
CPCH04N19/30H04N19/597H04N19/34H04N19/186H04N19/52H04N19/187G06T7/90G06T1/00
Inventor 叶琰董洁贺玉文R·内夫
Owner VID SCALE INC
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