Apparatus of decoding video data

A device and technology of intra-frame prediction mode, which is applied in the direction of digital video signal modification, television, and pulse-modulated television signal transmission. The effect of reducing coding complexity

Active Publication Date: 2013-05-08
GENSQUARE LLC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, as the number of intra prediction modes increases, the amount of coding bits required to transmit the intra prediction mode increases
Also, as the size of the coding unit becomes larger, the difference between the initial block and the predicted block is larger

Method used

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  • Apparatus of decoding video data
  • Apparatus of decoding video data
  • Apparatus of decoding video data

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Embodiment Construction

[0016] Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the exemplary embodiments disclosed below, but can be implemented in various ways. Accordingly, many other modifications and variations of the present invention are possible, and it is to be understood that the invention may be practiced otherwise than as specifically described within the scope of the disclosed concept.

[0017] figure 1 is a block diagram of the image encoding device 100 according to the present invention.

[0018] refer to figure 1 , the image coding device 100 according to the present invention includes a picture segmentation unit 110, an intra prediction unit 120, an inter prediction unit 130, a transformation unit 140, a quantization unit 150, a scanning unit 160, an entropy coding unit 170, an inverse quantization unit 155, an inverse Transformation unit 145 , post-pr...

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Abstract

Provided is an apparatus that derives a luma intra prediction mode and a chroma intra prediction mode, determines a size of a luma transform unit and a size of a chromatransform unit using luma transform size information, adaptively filters the reference pixels of a current luma block based on the luma intra prediction mode and the size of the luma transform unit, generates prediction blocks of the currentluma block and the currentcurrent block and generates a residual luma residual block and a chroma residual block. Therefore, the distance of intra prediction becomes short, and the amount of coding bits required to encode intra prediciton modes and residual blocks of luma and chroma components is reduced and the coding complexity is reduced by adaptively encoding the intra prediction modes and adaptively filtering the reference pixels.

Description

technical field [0001] The present invention relates to an apparatus for decoding video data, and more particularly, to an apparatus for generating prediction blocks and residual blocks to restore reconstructed blocks for luma and chrominance components using derived intra prediction modes. Background technique [0002] In H.264 / MPEG-4AVC, a picture is divided into a plurality of macroblocks to encode the image, and inter-frame prediction or intra-frame prediction is used to generate prediction blocks, thereby encoding the corresponding macroblocks. The difference between the original block and the predicted block is transformed to generate a transformed block, and the transformed block is quantized using a quantization parameter and one of a plurality of predetermined quantization matrices. The quantized coefficients of the quantized block are scanned by a predetermined scan type and then entropy encoded. The quantization parameter is adjusted for each macroblock and encod...

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N11/02H04N19/593
CPCH04N19/00375H04N19/00278H04N19/00303H04N19/00763H04N19/00315H04N19/00218H04N19/00272H04N19/00066H04N19/00109H04N19/00042H04N19/0009H04N19/00212H04N19/00084H04N7/26H04N19/00381H04N19/00551H04N19/124H04N19/11H04N19/117H04N19/122H04N19/129H04N19/13H04N19/157H04N19/159H04N19/172H04N19/176H04N19/186H04N19/463H04N19/593H04N19/82H04N19/119H04N19/105H04N19/139H04N19/50
Inventor 吴秀美
Owner GENSQUARE LLC
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