KR970057877A - Error Compensator in Video Decoder - Google Patents

Error Compensator in Video Decoder Download PDF

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Publication number
KR970057877A
KR970057877A KR1019950052071A KR19950052071A KR970057877A KR 970057877 A KR970057877 A KR 970057877A KR 1019950052071 A KR1019950052071 A KR 1019950052071A KR 19950052071 A KR19950052071 A KR 19950052071A KR 970057877 A KR970057877 A KR 970057877A
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South Korea
Prior art keywords
screen block
error
decoder
current screen
block
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KR1019950052071A
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Korean (ko)
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KR100196848B1 (en
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박충수
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배순훈
대우전자 주식회사
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Publication of KR970057877A publication Critical patent/KR970057877A/en
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Publication of KR100196848B1 publication Critical patent/KR100196848B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 복원영상의 화면 블록들간 연속성이 정확하게 구현될 수 있도록 된 영상복호기에서의 에러보상장치에 관한 것으로, 이를 해결하기 위하여 부호화되어 입력되는 영상데이타를 디코더(100)에 의해 화면블럭 단위로 복원하는 영상복호기에 있어서, 디코더(100)로부터 제공되는 현재 화면블록의 선형 예측된 화소값과 인접된 화면블록의 화소값에 의거하여 상기 현재 화면블럭 및 에러정보를 출력하는 에러검출부(200)와; 상기 에러검출부(200)의 에러정보에 의거하여 상기 현재 화면블럭을 이전 영상신호의 동일 위치화면블럭으로 대치시켜 출력하는 에러보정부(300)와; 상기 에러보정부(300)로부터 출력되는 보정된 화면 블록을 디스플레이하는 디스플레이장치(400)를 포함함으로써, 복원영상의 화면블럭들간 연속성이 정확하게 구현될 수 있는 효과가 있다.The present invention relates to an error compensator in an image decoder in which continuity between screen blocks of a reconstructed image can be accurately implemented. To solve this problem, the image data, which is encoded and input, is reconstructed by the decoder 100 in units of screen blocks. An image decoder comprising: an error detector (200) for outputting the current screen block and error information based on a linear predicted pixel value of a current screen block provided from a decoder (100) and a pixel value of an adjacent screen block; An error correction unit 300 for replacing the current screen block with the same position screen block of the previous video signal and outputting the same based on the error information of the error detection unit 200; By including the display device 400 for displaying the corrected screen block output from the error correction unit 300, there is an effect that the continuity between the screen blocks of the reconstructed image can be accurately implemented.

Description

영상복호기에서의 에러보상장치Error Compensator in Video Decoder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 영상복호기에서의 에러보상장치를 도시한 블록 구성도.1 is a block diagram showing an error compensator in an image decoder according to the present invention.

Claims (3)

부호화되어 입력되는 영상 데이타를 디코더(100)에 의해 화면 블록 단위로 복원하는 영상 복호기에 있어서, 상기 디코더(100)로부터 제공되는 현재 화면블럭의 선형 예측된 화소값과 인접된 화면블럭의 화소값에 의거하여 상기 현재 화면블럭 및 에러정보를 출력하는 에러검출부(200)와; 상기 에러검출부(200)의 에러정보에 의거하여 상기 현재 화면 블록을 이전 영상신호의 동일 위치화면블럭으로 대치시켜 출력하는 에러보정부(300)와; 상기 에러보정부(300)로부터 출력되는 보정된 화면블럭을 디스플레이하는 디스플레이장치(400)를 포함함을 특징으로 하는 영상복호기에서의 에러보상장치.A video decoder for reconstructing coded and input image data in units of picture blocks by the decoder 100, wherein the decoder 100 performs a linear predicted pixel value of the current screen block provided from the decoder 100 and a pixel value of an adjacent picture block. An error detector for outputting the current screen block and error information based on the error detection unit; An error correction unit 300 for replacing the current screen block with the same position screen block of a previous video signal and outputting the same based on the error information of the error detection unit 200; And a display device (400) for displaying the corrected screen block output from the error compensator (300). 제1항에 있어서, 상기 에러검출부(200)의 선형 예측을 위해서 적용되는 식은,According to claim 1, The equation applied for linear prediction of the error detector 200, 와 같으며, Is the same as 여기서, C'AC'LC'B은 현재 화면블럭과 인접한 화면 블록의 경계 부분에서의 위쪽, 왼쪽, 아래쪽에 위치한 화소값의 선형 예측된 값이며; fR은 복원된 현재 화면블럭의 화소이고; fP은 현재 화면블럭의 소정화소값에 대한 선형 예측된 값을 의미함을 특징으로 하는 영상복호기에서의 에러보상장치.Where C ' A C' L C ' B is a linear predicted value of pixel values located at the top, left, and bottom of the boundary of the screen block adjacent to the current screen block; f R is the pixel of the restored current screen block; and f P is a linear predicted value with respect to a predetermined pixel value of the current screen block. 상기 C'AC'LC'B를 합하여 얻어지는 C'이 기설정된 임계값보다 클 경우, 현재 화면블럭이 인접한 화면블럭과 연속성이 없다는 에러신호를 제공함을 특징으로 하는 영상복호기에서의 에러보상 장치.When C 'obtained by adding C' A C ' L C' B is larger than a preset threshold, an error compensator for the current decoder provides an error signal that the current screen block is not continuous with the adjacent screen block. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950052071A 1995-12-19 1995-12-19 Apparatus for compensating error in image decoder KR100196848B1 (en)

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KR1019950052071A KR100196848B1 (en) 1995-12-19 1995-12-19 Apparatus for compensating error in image decoder

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Application Number Priority Date Filing Date Title
KR1019950052071A KR100196848B1 (en) 1995-12-19 1995-12-19 Apparatus for compensating error in image decoder

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KR970057877A true KR970057877A (en) 1997-07-31
KR100196848B1 KR100196848B1 (en) 1999-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030086099A (en) * 2002-05-03 2003-11-07 엘지전자 주식회사 Error concellment method for video decoder
KR100548316B1 (en) * 2002-11-08 2006-02-02 엘지전자 주식회사 Error compansation method and apparatus for moving picture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030086099A (en) * 2002-05-03 2003-11-07 엘지전자 주식회사 Error concellment method for video decoder
KR100548316B1 (en) * 2002-11-08 2006-02-02 엘지전자 주식회사 Error compansation method and apparatus for moving picture

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