Hybrid skip mode used for depth map encoding and decoding

A technology of depth map and mode, which is applied in the field of encoding and decoding, and video compression, can solve the problems of reducing encoding efficiency and achieve high encoding efficiency

Active Publication Date: 2012-10-24
HONG KONG APPLIED SCI & TECH RES INST
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  • Abstract
  • Description
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Problems solved by technology

Again, this predictive mode causes additional overhead and reduces coding efficiency

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  • Hybrid skip mode used for depth map encoding and decoding
  • Hybrid skip mode used for depth map encoding and decoding

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Embodiment Construction

[0022] In the following description, the system and method for encoding and decoding multi-view video depth maps using hybrid predictive skip mode and others are illustrated by way of preferred examples. It is obvious to those skilled in the art that modifications including additions and / or substitutions can be made without departing from the scope and spirit of the present invention. Specific details may have been left out in order not to obscure the invention; however, this disclosure is written to enable one skilled in the art to practice the teachings herein without undue experimentation.

[0023] According to various embodiments of the present invention, the macroblock prediction process in multi-view video depth map coding can be applied to video compression, transmission and playback systems, the system includes: uncoded multi-view video with depth map data Signal source; an encoder for compressing and encoding unencoded multi-view video with a depth map, said compressi...

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Abstract

The invention provides a hybrid skip mode used for depth map encoding and decoding. Compared with a texture view, the differences are that a depth map image has a smooth area and has no complex texture at the edge of an object or rapid change of a pixel value. Although the conventional interframe predicting skip mode is very effective for encoding the texture view, no intra-frame predicting capabilities are included, and the intra-frame prediction is very effective for encoding the smooth area. The hybrid predicting skip mode provided by the invention comprises an interframe predicting skip mode which is coupled with various intra-frame predicting modes; and the predicting mode is selected through calculating the side matching distortion (SMD) of the predicting mode. As no additional indicator bit is required and the bit stream syntax is not changed, high encoding efficiency is kept; and moreover, the encoding program provided by the invention and used for encoding the depth map can be used as the extension of the existing standard and can be realized more easily.

Description

technical field [0001] The present invention generally relates to video compression, encoding and decoding. In particular, the invention relates to prediction modes in the encoding of depth data in multi-view video. Background technique [0002] A typical video compression codec (eg, H.264 / AVC or HEVC) divides an image or frame in a video to be encoded into pixel blocks or macroblocks with different sizes, and assigns prediction modes to these macroblocks. The macroblock size can be 16x16, 8x8, 4x4, 8x16, 16x8, 4x8 or 8x4. A prediction mode defines a method for generating predicted data from previously encoded data (spatial or temporal). The goal is to minimize the residual or difference between the predicted data and the original data. As redundant data is discarded, the amount of data bits that video needs to send or store is therefore compressed, thereby achieving data compression. [0003] A prediction mode used to remove temporal redundancy is called an inter predic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N13/00H04N19/597
Inventor 陈锐霖曾锡豪萧允治张开珏许伟林伦柏江任俊彦
Owner HONG KONG APPLIED SCI & TECH RES INST
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