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A picture, direct technology, applied in the field of video encoding and decoding, can solve problems such as increasing coding complexity and increasing image resolution

Active Publication Date: 2015-11-25
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The requirements for increased image quality and increased image resolution for video coding techniques also increase the complexity of encoding

Method used

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Embodiment Construction

[0038] International Telecommunication Union Telecommunication Standardization Sector (ITU-T) Study Group 16 (SG16) Working Party 3 (WP3) and International Organization for Standardization / International Electrotechnical Commission (ISO / IEC) Joint Technical Committee 1 / Section 29 / Part 2 The Joint Collaborative Team on Video Coding (JCT-VC) of Working Group 11 (JTC1 / SC29 / WG11) conducts standardization work on a video coding standard called High Efficiency Video Coding (HEVC). HEVC uses block-based encoding.

[0039] In HEVC, the entropy coding technique of Context Adaptive Binary Arithmetic Coding (CABAC) is used to losslessly compress transformed and quantized coefficients (TQC). Depending on the transform size, TQC can have from different block sizes (eg, 4x4, 8x8, 16x16, 32x32).

[0040] A two-dimensional (2D) TQC can be converted into a one-dimensional (1D) array before entropy encoding. In one example, a 2D arrangement of TQCs in a 4x4 block can be arranged as shown in Ta...

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Abstract

A method for decoding a video bitstream is described. A base layer bitstream representative of a video sequence is received. A plurality of enhancement bitstreams representative of a video sequence is also received, wherein each of said base layer and / or enhancement bitstreams includes direct dependency data. Said base layer bitstream and each of said plurality of enhancement bitstreams are decoded, where a picture of said base layer bitstream encoded in an intra-coded IDR or intra-coded BLA shall have a corresponding intra-coded IDR or intra-coded BLA pictures for each of said enhancement bitstreams at a corresponding picture of said base layer bitstream, except in the case that one of said enhancement layer is not an independent bitstream.

Description

technical field [0001] The present invention relates to video encoding and decoding. Background technique [0002] Electronic devices are becoming smaller and more powerful in order to meet consumer demands and to improve portability and convenience. Consumers have become dependent on electronic devices and desire increased functionality. Some examples of electronic devices include desktop computers, laptop computers, cellular phones, smart phones, media players, integrated circuits, and the like. [0003] Some electronic devices are used to process and display digital media. For example, portable electronic devices now allow digital media to be consumed and / or produced almost anywhere a consumer may be. In addition, some electronic devices may provide for downloading or streaming of digital media content for consumption and enjoyment by consumers. [0004] Digital video is typically represented as a series of images or frames, each image or frame comprising an array of ...

Claims

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Application Information

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IPC IPC(8): H04N19/70H04N19/30
CPCH04N19/30H04N19/114H04N19/136H04N19/187H04N19/597
Inventor 萨琴·G·德希潘德
Owner SHARP KK