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KR970014394A - Window setting method in motion estimation - Google Patents

Window setting method in motion estimation Download PDF

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Publication number
KR970014394A
KR970014394A KR1019950028093A KR19950028093A KR970014394A KR 970014394 A KR970014394 A KR 970014394A KR 1019950028093 A KR1019950028093 A KR 1019950028093A KR 19950028093 A KR19950028093 A KR 19950028093A KR 970014394 A KR970014394 A KR 970014394A
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KR
South Korea
Prior art keywords
window
motion estimation
frame
image data
frame image
Prior art date
Application number
KR1019950028093A
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Korean (ko)
Other versions
KR0178202B1 (en
Inventor
안정모
Original Assignee
배순훈
대우전자 주식회사
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Priority to KR1019950028093A priority Critical patent/KR0178202B1/en
Publication of KR970014394A publication Critical patent/KR970014394A/en
Application granted granted Critical
Publication of KR0178202B1 publication Critical patent/KR0178202B1/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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/57—Motion estimation characterised by a search window with variable size or shape

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

Abstract

본 발명은 움직임 추정에서의 윈도우 설정방법에 관한 것으로, I 프레임과 P 프레임 영상데이타 간에 연결된 선상에 존재하는 B 프레임의 매크로블럭 위치를 계산하고, 계산된 위치에 대한 탐색영역(A)을 구성하며, 예측방향에 따라 I 프레임과 P 프레임 영상데이타 상에서 윈도우의 크기를 설정한 다음 움직임 추정을 수행하므로써, 움직임 추정을 위한 매크로블럭의 서치시에 윈도우의 크기를 적절히 조절하므로, 연산시간의 절감 및 정확한 움직임벡터를 연산할 수 있도록 한 것이다.The present invention relates to a method for setting a window in motion estimation. The present invention relates to calculating a macroblock position of a B frame existing on a line connected between I frame and P frame image data, and configuring a search area A for the calculated position. By setting the window size on the I-frame and P-frame image data according to the prediction direction, and then performing the motion estimation, the window size is properly adjusted during the search of the macroblock for motion estimation, thereby reducing the computation time and accurate The motion vector can be calculated.

Description

움직임 추정에서의 윈도우 설정방법Window setting method in motion estimation

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

제2도는 본 발명의 바람직한 실시예에 따라 윈도우의 크기를 조절하는 동작과정을 도시한 플로우챠트.2 is a flowchart illustrating an operation of adjusting the size of a window according to a preferred embodiment of the present invention.

제3도는 본 발명에 따라 윈도우의 크기를 설정하는 것을 설명하기 위한 도면.3 is a view for explaining the setting of the size of the window according to the present invention.

Claims (1)

움직임추정수단(18)을 통해 I 프레임과 P 프레임 영상데이타의 움직임벡터를 추정하는 방법에 있어서, 거대 탐색영역에 대한 윈도우를 설정한 다음 상기 움직임추정수단(180)을 통해 상기 I 프레임과 상기 P 프레임에 대한 움직임벡터를 추정하는 제1단계; B 프레임 영상데이타에 대한 매크로블럭의 상대위치를 판별하고, 상기 매크로블럭의 상대위치에 대한 예측방향이 전방예측이면 상기 I 프레임 영상데이타에 상기 거대 탐색영역에 대한 윈도우에 비해 작은 윈도우를 설정하는 제2단계; 상기 매크로블럭의 상대위치에 대한 예측방향이 후방에측이면 상기 P 프레임 영상데이타에 대한 상기 거대 탐색영역에 대한 윈도우에 비해 작은 윈도우를 설정하는 제3단계; 상기 제2 및 제3단계에서 설정된 상기 거대 탐색영역에 대한 윈도우에 비해 작은 윈도우를 이용하여 상기 움직임추정수단(180)을 통해 상기 움직임벡터를 추정하는 제4단계로 이루어진 것을 특징으로 하는 움직임 추정에서의 윈도우 설정방법.In the method for estimating the motion vector of the I frame and the P frame image data through the motion estimation means (18), a window for a huge search area is set and then the I frame and the P through the motion estimation means (180). Estimating a motion vector for the frame; Determining a relative position of the macroblock with respect to the B-frame image data, and setting a small window in the I-frame image data as compared with the window for the huge search region if the prediction direction of the macroblock relative to the macroblock is forward predicted. Step 2; Setting a window smaller than the window of the huge search region for the P-frame image data when the prediction direction of the macro block is backward; In the motion estimation, characterized in that the fourth step of estimating the motion vector through the motion estimation means 180 using a window smaller than the window for the giant search area set in the second and third steps How to set Windows. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application. (선택도 제2도)(Selectivity second degree)
KR1019950028093A 1995-08-31 1995-08-31 Method for establishing the window in motion estimation KR0178202B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950028093A KR0178202B1 (en) 1995-08-31 1995-08-31 Method for establishing the window in motion estimation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950028093A KR0178202B1 (en) 1995-08-31 1995-08-31 Method for establishing the window in motion estimation

Publications (2)

Publication Number Publication Date
KR970014394A true KR970014394A (en) 1997-03-29
KR0178202B1 KR0178202B1 (en) 1999-05-01

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Application Number Title Priority Date Filing Date
KR1019950028093A KR0178202B1 (en) 1995-08-31 1995-08-31 Method for establishing the window in motion estimation

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KR0178202B1 (en) 1999-05-01

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