KR970073169A - APPARATUS FOR CODING INTRA-FRAME AND METHOD THEREOF - Google Patents

Abstract

An apparatus and method for encoding an intra frame includes performing prediction processing using a plurality of contiguous blocks in an intra frame transmitted in block units in a predetermined unit in the video signal encoding system and performing predictive processing on the intra frame data in accordance with the PTSVQ method The apparatus includes a block integrator for dividing an intraframe signal into a predetermined number of blocks and outputting the intraframe signal; A predicted value extracting unit for extracting a predicted value for a predetermined block using a previously applied adjacent block based on a predetermined block currently transmitted from the block dividing unit; A change amount detecting unit for detecting a change amount of a predetermined block with respect to an adjacent block using a predetermined block transmitted from the block dividing unit and prediction values provided from the predicted value extracting unit; And a quantization unit for vector-quantizing the signal output from the change amount detection unit.

Description

APPARATUS FOR CODING INTRA-FRAME AND METHOD THEREOF

Since this is a trivial issue, I did not include the contents of the text.

FIG. 1 is a block diagram of an encoding apparatus for an intra frame according to the present invention; FIG. 2 (a) through FIG. 2 (e) are block diagrams for explaining the operation of the prediction unit shown in FIG.

Claims (8)

An intra-frame encoding apparatus for a video signal encoding system, the intra-frame encoding apparatus comprising: a block division unit (100) for dividing an intraframe signal into a predetermined number of blocks; A predicted value extraction unit 110 for extracting a predicted value for the predetermined block using a previously applied adjacent block based on a predetermined block currently transmitted from the block dividing unit 100; A variation detecting unit 120 for detecting a variation of the predetermined block with respect to the adjacent block using the predetermined block transmitted from the block dividing unit 100 and the prediction value provided from the predicted value extracting unit 110, ; And a quantization unit (130) for vector quantizing the signal output from the variation detection unit (120). 2. The method of claim 1, wherein the prediction value extraction unit (110) divides the pixel values in the adjacent block by a number corresponding to the number of adjacent adjacent blocks, And extracts a value obtained by adding the predicted value of the predetermined block to the predicted value of the predetermined block. The intra-frame encoding apparatus according to claim 1, wherein the variation detector (120) subtracts the predicted value from the predetermined block to detect the variation. The apparatus of claim 3, wherein the variation detector (120) comprises subtractors corresponding to the number of pixels existing in the predetermined block, and performs the subtraction. The apparatus of claim 1 or 3, wherein the quantization unit (130) performs the vector quantization using a PTSVQ scheme. An intra-frame encoding method of a video signal encoding system, the intra-frame encoding method comprising: dividing a block into a predetermined unit if the intra frame is transmitted; Transmitting the divided blocks in units of blocks in the dividing step; A first detecting step of detecting a previously applied neighboring block existing based on the predetermined block being currently transmitted; Extracting a predicted value for the currently transmitted block using the neighboring block detected in the first detecting step; A second detecting step of detecting a change amount of the currently transmitted predetermined block using the predicted value extracted in the extracting step; Quantizing an amount of change detected in the second detecting step and transmitting the vector quantized signal. 7. The method of claim 6, wherein the extracting the predicted value comprises: dividing a pixel value in the adjacent block by a number corresponding to the number of adjacent blocks; And extracting a prediction value of the predetermined block by adding values existing at the same position in each block among the values divided in the dividing step. The intra-frame encoding method according to claim 6, wherein the second detecting step detects the amount of change in units of pixels existing in the predetermined block. ※ Note: It is disclosed by the contents of the first application.