Method and apparatus for encoding and decoding based on inter prediction

A technology of inter-frame prediction and inter-frame prediction mode, which is applied in the direction of TV, electrical components, pulse modulation TV signal transmission, etc., to achieve the effect of improving the compression rate

Inactive Publication Date: 2010-02-17
SAMSUNG ELECTRONICS CO LTD
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  • Method and apparatus for encoding and decoding based on inter prediction
  • Method and apparatus for encoding and decoding based on inter prediction
  • Method and apparatus for encoding and decoding based on inter prediction

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[0034] Hereinafter, the present invention will be fully described with reference to the accompanying drawings showing exemplary embodiments of the invention.

[0035] figure 2 is a block diagram of an apparatus for encoding based on inter prediction ("the apparatus") according to an exemplary embodiment of the present invention. refer to figure 2 , the device includes a motion estimation unit 210 , a motion compensation unit 220 , an encoding unit 230 , a restoration unit 240 , a frame memory 250 and a filter 260 . The motion compensation unit 220 and the encoding unit 230 correspond to an apparatus for encoding based on inter prediction according to the present invention.

[0036] The motion estimation unit 210 searches the frame memory 250 for a reference block corresponding to the current block, and estimates a motion vector for the current block using the reference block.

[0037] Such as Figure 1A As shown, a reference block is detected from a reference picture by u...

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Abstract

A method and apparatus for encoding and decoding based on inter prediction are provided. In the encoding method, a current block is encoded by respectively performing intra prediction on the current block and a reference block in a reference picture which corresponds to the current block, and performing inter prediction on the current block based on the results of performing intra prediction. Accordingly, it is possible to reduce the size of data regarding the current block, which is generated as a result of performing inter prediction, thereby improving the compression rate of video data.

Description

technical field [0001] Methods and apparatus consistent with the present invention relate to encoding and decoding based on inter prediction, and more specifically, to performing inter prediction such that the residual of the current block to be encoded is minimized, and based on the result of performing inter prediction to Encode and decode the current block. Background technique [0002] In video compression methods such as MPEG-1, MPEG-2 and MPEG-4 H.264 / MPEG-4 Advanced Video Coding (AVC), a picture is divided into macroblocks for encoding the picture. Next, each macroblock is encoded using inter prediction and intra prediction. Then the optimal encoding method is selected in consideration of the data size of the encoded macroblock and the degree of degradation of the original macroblock, and the macroblock is encoded according to the optimal encoding mode. [0003] Among methods of encoding images by using inter prediction in the related art, images are compressed by r...

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Application Information

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IPC IPC(8): H04N7/26
CPCH04N19/00781H04N7/50H04N19/00763H04N19/00733H04N7/362H04N7/345H04N19/51H04N19/593H04N19/61H04N19/176
Inventor 金素英韩宇镇
Owner SAMSUNG ELECTRONICS CO LTD
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