KR980007719A - Image Signal Processing Method Using Padding Technique and Contour Information - Google Patents

Image Signal Processing Method Using Padding Technique and Contour Information Download PDF

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Publication number
KR980007719A
KR980007719A KR1019960020286A KR19960020286A KR980007719A KR 980007719 A KR980007719 A KR 980007719A KR 1019960020286 A KR1019960020286 A KR 1019960020286A KR 19960020286 A KR19960020286 A KR 19960020286A KR 980007719 A KR980007719 A KR 980007719A
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South Korea
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block
contour
padding
information
data
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KR1019960020286A
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Korean (ko)
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KR100209415B1 (en
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김종일
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배순훈
대우전자 주식회사
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Priority to KR1019960020286A priority Critical patent/KR100209415B1/en
Priority to US08/869,557 priority patent/US5881175A/en
Priority to JP9149266A priority patent/JPH1084544A/en
Priority to IN1073CA1997 priority patent/IN192319B/en
Publication of KR980007719A publication Critical patent/KR980007719A/en
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Publication of KR100209415B1 publication Critical patent/KR100209415B1/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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

본 발명에 따른 패딩 기법 및 물체의 윤곽선 정보를 이용하여 비트 발생율을 감소시킬 수 있는 개선된 영상 신호 처리 방법은, 입력되는 상기 물체의 윤곽선을 포함하는 윤곽선 데이타 블럭을 기설정된 부호화 기법에 의해 부호화하고, 부호화된 데이터를 윤곽선 정보로서 제공하며, 부호화된 윤곽선 정보를 다시 복호화하여, 재구성된 윤곽선 데이타 블럭을 제공하며, 상기 재구성된 윤곽선 데이타 블럭을 이용하여, 상기 데이타 블럭내의 각각의 8×8 화소 블럭내에서 복호화된 윤곽선을 둘러싸는 최소 사각형 블럭을 구현하여 이 최소 시각형 블럭의 가로 길이(LM), 세로 길이(LN) 및 위치 정보를 검출하여 메모리로 어드레스하며, 입력되는 윤곽선 데이타 블럭을 부호화되기 전의 원래의 윤곽선 데이타를 이용하여 전체적으로 패딩하여 이 패딩 블럭을 메모리로 전송하고, 메모리로 입력되는 정보에 따라 메모리에 저장된 패딩 블럭을 순차적으로 전송하며, 전송되는 패딩블럭에 대하여 LM×LN 2차원 DCT 및 양자화를 수행하여, 양자화된 계수 데이타 블럭을 제공하고, 제공되는 양자화된 계수 데이타 블럭에 대하여 앞단의 LM×LN 영역에의 양자화된 계수 데이타만을 스캐닝하여 가변길이 부호화를 수행한다.An improved image signal processing method capable of reducing a bit generation rate by using a padding technique and contour information of an object according to the present invention comprises encoding a contour data block including the contour of the object to be input by a predetermined encoding technique. Provide the encoded data as contour information, decode the encoded contour information again to provide a reconstructed contour data block, and using the reconstructed contour data block, each 8x8 pixel block in the data block Implement the smallest rectangular block surrounding the decoded contour within the frame, detect the horizontal length (LM), vertical length (LN), and position information of the minimum visual block and address it to memory, and encode the input contour data block. Pad this padding block by padding it entirely using the original original contour data. And transmit the padding blocks stored in the memory sequentially according to the information input into the memory, and perform LM × LN two-dimensional DCT and quantization on the transmitted padding block to provide quantized coefficient data blocks. The variable length coding is performed by scanning only the quantized coefficient data in the LM × LN region of the preceding quantized coefficient data block.

Description

패딩 기법 및 윤곽선 정보를 이용한 영상 신호 처리 방법Image Signal Processing Method Using Padding Technique and Contour Information

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제 1 도는 본 발명에 따른 물체의 영상 신호 처리장치의 동작을 예시적으로 설명하기 위한 블럭도.1 is a block diagram for explaining the operation of the image signal processing apparatus of an object according to the present invention.

Claims (3)

패딩 기법 및 물체의 윤곽선 정보를 이용하여 비트 발생율을 감소시킬 수 있는 개선된 영상 신호 처리 방법에 있어서, 입력되는 상기 물체의 윤곽선을 포함하는 윤각선 데이타 블럭을 기설정된 부호화 기법에 의해 부호화하고, 부호화된 데이터를 윤곽선 정보로서 제공하는 제 1 단계, 상기 제 1 단계에서 재공된 윤곽선 정보를 다시 복호화하여, 재구성된 윤곽선 데이타 블럭을 제공하며, 상기 재구성된 윤곽선 데이타 블럭을 이용하여, 상기 데이타 블럭내의 각각의 8×8 화소 블럭내에서 복화된 윤곽선을 둘러싸는 최소 사각형 블럭을 구현하여 상기 최소 사각형에 관한 정보를 검출하여 메모리로 어드레스하는 제 3 단계; 상기 제 1 단계로 입력되는 윤곽선 데이타 블럭을 부호화되기 전의 원래의 윤곽선 데이타를 이용하여 전체적으로 패딩하여 이 패딩 블럭을 메모리로 전송하는 제 4 단계; 상기 제 3 단계에서 입력되는 정보에 따라 메모리에 저장된 패딩 블럭을 순차적으로 전송하는 제 5 단계; 상기 제 5 단계에서 얻어진 패딩블럭에 대하여 상기 최소 사각형 블럭의 가로 길이 및 세로 길이의 곱인 LM×LN 2차원 DCT 및 양자화를 수행하여, 양자화된 계수 데이타 블럭을 제공하는 제 6 단계; 및 상기 제 6 단계에서 제공되는 양자화된 계수 데이타 블럭에 대하여 상기 LM×LN 영역에의 양자화된 계수 데이타만을 스캐닝하여 가변 길이 부호화를 수행하는 제 7 단계를 포함하는 것을 특징으로 하는 영상 신호 처리 방법.An improved image signal processing method capable of reducing a bit generation rate by using a padding technique and contour information of an object, comprising: encoding a circumferential data block including the contour of the input object by a predetermined encoding method A first step of providing data as outline information, and again decoding the outline information provided in the first step to provide a reconstructed outline data block, and using each of the reconstructed outline data blocks, A third step of realizing a minimum rectangular block surrounding a duplicated contour in an 8x8 pixel block to detect information about the minimum rectangular and address it to a memory; A fourth step of totally padding the contour data block input in the first step by using the original contour data before encoding and transmitting the padding block to the memory; A fifth step of sequentially transmitting a padding block stored in a memory according to the information input in the third step; A sixth step of providing quantized coefficient data blocks by performing LM × LN two-dimensional DCT and quantization on the padding block obtained in the fifth step, the product of the horizontal length and the vertical length of the smallest rectangular block; And a seventh step of performing variable length coding by scanning only the quantized coefficient data in the LM × LN region with respect to the quantized coefficient data block provided in the sixth step. 제 1 항에 있어서, 상기 최소 사각형에 관한 정보는, 상기 최소 사각형 블럭의 가로길이, 세로 길이 및 상기 최소 사각형이 상기 화소 블럭에서 위치하는 위치 정보인 것을 특징으로 하는 영상 신호 처리 방법.The image signal processing method according to claim 1, wherein the information on the minimum rectangle is information on the width, length, and position of the minimum rectangle in the pixel block. 제 1 항에 있어서, 상기 LM×LN 2차원 DCT 대신 DST, 하트리 변환 혹은 또 다른 방법을 사용할 수 있는 것을 특징으로 하는 영상 신호 처리 방법.The video signal processing method according to claim 1, wherein a DST, a Hartley transform, or another method may be used instead of the LM × LN two-dimensional DCT.
KR1019960020286A 1996-06-07 1996-06-07 Method for processing video signals using padding technique and contour information KR100209415B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960020286A KR100209415B1 (en) 1996-06-07 1996-06-07 Method for processing video signals using padding technique and contour information
US08/869,557 US5881175A (en) 1996-06-07 1997-06-05 Method and apparatus for encoding an image signal by using the contour signal thereof
JP9149266A JPH1084544A (en) 1996-06-07 1997-06-06 Video signal coder
IN1073CA1997 IN192319B (en) 1996-06-07 1997-06-09

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Application Number Priority Date Filing Date Title
KR1019960020286A KR100209415B1 (en) 1996-06-07 1996-06-07 Method for processing video signals using padding technique and contour information

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KR980007719A true KR980007719A (en) 1998-03-30
KR100209415B1 KR100209415B1 (en) 1999-07-15

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