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Adaptive Upsampling for Multilayer Video Coding

A post-encoding, video sequence technology, applied in digital video signal modification, image communication, electrical components, etc., can solve problems such as complex transmission channel characteristics, packet loss rate between network and transmission channel, and difference in burst error rate of available channel bandwidth

Active Publication Date: 2019-03-29
VID SCALE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Network and transport channels may have very different characteristics in terms of packet loss rate, available channel bandwidth, burst error rate, etc.
Video data can be transmitted over a combination of wired and wireless networks, which complicates the characteristics of the underlying transmission channel

Method used

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  • Adaptive Upsampling for Multilayer Video Coding
  • Adaptive Upsampling for Multilayer Video Coding
  • Adaptive Upsampling for Multilayer Video Coding

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 is a diagram illustrating an example of a block-based hybrid video coding system. The input video signal 102 may be processed on a block-by-block basis. A video block unit may include 16x16 pixels. A block unit may be referred to as a macroblock or MB. In High Efficiency Video Coding (HEVC), extended block sizes (eg, may be referred to as coding units or CUs) may be used to compress high-resolution (eg, 1080p or higher) video signals. In HEVC, a CU can be up to 64x64 pixels. A CU can also be partitioned into prediction units (PUs), for which separate prediction implementations can be applied. For an input video block (eg, MB or CU), spatial prediction 160 and / or temporal prediction 162 may be performed. Spatial prediction (eg, intra prediction) may use pixels from coded neighboring blocks in the same video picture / slice to predict a current video block. Spatial prediction reduces the spatial redundancy inherent in video signals. Temporal prediction (whic...

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Abstract

Systems, methods and means for adaptive upsampling for multi-layer video coding are disclosed. A method of transmitting video data may include applying an upsampling filter to a video sequence to generate encoded enhancement layer pictures. This upsampling filter can be applied at the sequence level of the video sequence to generate the enhancement layer bitstream. The upsampling filter may be selected from a plurality of candidate upsampling filters, for example, by determining whether there is class information associated with the video sequence and selecting a candidate upsampling filter designed for the class associated with the video sequence. Upsampling filter information may be encoded. The encoded upsampling filter information may include a plurality of coefficients of the upsampling filter. The encoded upsampling filter information and encoded enhancement layer pictures may be sent in the output video bitstream. The method can be performed, for example, by an encoder.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 61 / 706,941, filed September 28, 2012, and U.S. Provisional Patent Application No. 61 / 750,883, filed January 10, 2013, the contents of which are incorporated by reference combined here. Background technique [0003] Video coding systems are used to compress digital video signals to reduce the storage requirements and / or transmission bandwidth of the signals. Video coding systems may include block-based systems, wavelet-based systems, object-based systems, and the like. Block-based hybrid video coding systems can be used and deployed. Examples of block-based video coding systems include, but are not limited to, international video coding standards such as MPEG1 / 2 / 4 Part 2, H.264 / MPEG-4 Part 10 AVC and VC-1 standards. [0004] As smartphones and tablets grow in both resolution and computing power, additional video applications such as video ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/70H04N19/147H04N19/172H04N19/61H04N19/117H04N19/136H04N19/174H04N19/179H04N19/192H04N19/80H04N19/33H04N19/59
CPCH04N19/159H04N19/176H04N19/70H04N19/147H04N19/172H04N19/61H04N19/136H04N19/174H04N19/179H04N19/192H04N19/80H04N19/33H04N19/59H04N19/117H04N19/187
Inventor 董洁罗恩铭贺玉文叶琰
Owner VID SCALE INC