KR100719939B1 - 영상 움직임 추정기 및 그 영상 움직임 추정기를 이용한영상 압축방법 - Google Patents
영상 움직임 추정기 및 그 영상 움직임 추정기를 이용한영상 압축방법 Download PDFInfo
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- KR100719939B1 KR100719939B1 KR1020040080533A KR20040080533A KR100719939B1 KR 100719939 B1 KR100719939 B1 KR 100719939B1 KR 1020040080533 A KR1020040080533 A KR 1020040080533A KR 20040080533 A KR20040080533 A KR 20040080533A KR 100719939 B1 KR100719939 B1 KR 100719939B1
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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
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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
- H04N19/10—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
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
- H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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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
- H04N19/10—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
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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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/43—Hardware specially adapted for motion estimation or compensation
- H04N19/433—Hardware specially adapted for motion estimation or compensation characterised by techniques for memory access
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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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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Abstract
Description
Claims (2)
- 현재 프레임과 참조 프레임의 픽셀정보를 입력받아 SAD를 계산하는 비교부(PE array)(1)와, 참조 프레임의 정보를 임시적으로 저장하는 탐색 영역 메모리(search area SRAM)(2)와, 4x4 SAD 값을 입력받아 더 큰 부분의 SAD를 생성해내고 최소값과 그에 해당하는 움직임 벡터를 저장하는 가산기와 비교기(adder & comparator)(3)와, 탐색 영역 메모리(search area SRAM)의 주소와 다른 블록의 제어 신호(control signal)을 생성해내는 제어부(ME control)(4)를 포함함을 특징으로 하는 영상 움직임 추정기
- PE 영역에서는 매 사이클마다 수평 방향으로 탐색 영역 데이터를 이동시키고, 탐색 위치가 수직 방향으로 바뀔 때마다 수직 방향으로 현재 블록 데이터를 이동시키는 단계와; PE내에서 매 클럭마다 현재 블록 레지스터(CBR : current block register)과 참조 블록 레지스터(RBR : reference block register)에 있는 값의 차의 절대치를 계산하고 예비 블록 레지스터(Preload register)는 현재 프레임의 다음 매크로블록 데이터를 저장하고 있며, 그 저장된 데이터는 현재 매크로블록에 대해 연산이 끝나면 CBR로 데이터를 가져오는 단계와; 현재 탐색중인 가로줄 탐색이 끝나고 새로운 가로줄에 대해서 탐색을 시작할 때 탐색 데이터 버퍼(search data buffer)에 저장된 데이터를 가져오는 단계와; 16x4 PE 에서 16개의 1x4 SAD 결과를 합해 4개의 4x4 SAD 결과를 만들고 1x4 PE의 결과와 가산기(adder) 사이에 선택기(selector)를 추가하여 1x4 SAD가 올바로 가산기(adder)로 입력되도록 하는 단계와; 4x4 SAD들은 더하기 전에 레지스터에 저장되어 임계 경로(critical path)를 없애 준 뒤 다음 클럭 때 가산기(adder)를 거쳐 8x4, 4x8, 8x8, 16x8, 8x16, 16x16 SAD를 생성하는 단계 및 41개의 SAD에 대해 최소값을 비교하여 41개의 최소 SAD와 그에 해당하는 움직임 벡터를 저장하는 단계를 포함함을 특징으로 하는 영상 움직임 추정기를 이용한 영상 압축방법.
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KR1020040080533A KR100719939B1 (ko) | 2004-10-08 | 2004-10-08 | 영상 움직임 추정기 및 그 영상 움직임 추정기를 이용한영상 압축방법 |
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KR1020040080533A KR100719939B1 (ko) | 2004-10-08 | 2004-10-08 | 영상 움직임 추정기 및 그 영상 움직임 추정기를 이용한영상 압축방법 |
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KR20060031478A KR20060031478A (ko) | 2006-04-12 |
KR100719939B1 true KR100719939B1 (ko) | 2007-05-18 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI295540B (en) * | 2005-06-15 | 2008-04-01 | Novatek Microelectronics Corp | Motion estimation circuit and operating method thereof |
KR100951847B1 (ko) * | 2007-05-22 | 2010-04-12 | 한국전자통신연구원 | 가변 블록 움직임 추정을 위한 sad 계산 방법 및 장치 |
US8731059B2 (en) | 2007-05-22 | 2014-05-20 | Electronics And Telecommunications Research Institute | Apparatus and method for calculating sum of absolute differences for motion estimation of variable block |
Citations (4)
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JP2000023163A (ja) | 1998-06-30 | 2000-01-21 | Sharp Corp | 動きベクトル検出装置 |
JP2000102005A (ja) | 1998-09-21 | 2000-04-07 | Nippon Telegr & Teleph Corp <Ntt> | 再構成可能アーキテクチャを用いた画像符号化方法及びそのための装置、及びそのための方法を記述したプログラムを記録した記録媒体 |
JP2000295613A (ja) | 1999-04-09 | 2000-10-20 | Nippon Telegr & Teleph Corp <Ntt> | 再構成可能なハードウェアを用いた画像符号化方法,画像符号化装置および画像符号化のためのプログラム記録媒体 |
KR20040000907A (ko) * | 2002-06-26 | 2004-01-07 | 이문기 | 영상부호화를 위한 블록 매칭 움직임 추정 장치 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2000023163A (ja) | 1998-06-30 | 2000-01-21 | Sharp Corp | 動きベクトル検出装置 |
JP2000102005A (ja) | 1998-09-21 | 2000-04-07 | Nippon Telegr & Teleph Corp <Ntt> | 再構成可能アーキテクチャを用いた画像符号化方法及びそのための装置、及びそのための方法を記述したプログラムを記録した記録媒体 |
JP2000295613A (ja) | 1999-04-09 | 2000-10-20 | Nippon Telegr & Teleph Corp <Ntt> | 再構成可能なハードウェアを用いた画像符号化方法,画像符号化装置および画像符号化のためのプログラム記録媒体 |
KR20040000907A (ko) * | 2002-06-26 | 2004-01-07 | 이문기 | 영상부호화를 위한 블록 매칭 움직임 추정 장치 |
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