KR100917208B1 - 블록 경계 영역 필터링 방법 - Google Patents
블록 경계 영역 필터링 방법 Download PDFInfo
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- KR100917208B1 KR100917208B1 KR1020080099675A KR20080099675A KR100917208B1 KR 100917208 B1 KR100917208 B1 KR 100917208B1 KR 1020080099675 A KR1020080099675 A KR 1020080099675A KR 20080099675 A KR20080099675 A KR 20080099675A KR 100917208 B1 KR100917208 B1 KR 100917208B1
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000001914 filtration Methods 0.000 title claims abstract description 11
- 238000013139 quantization Methods 0.000 claims description 23
- 238000009499 grossing Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims 1
- 238000012805 post-processing Methods 0.000 abstract description 10
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 101000969688 Homo sapiens Macrophage-expressed gene 1 protein Proteins 0.000 description 2
- 102100021285 Macrophage-expressed gene 1 protein Human genes 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
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- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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
- H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/70—Denoising; Smoothing
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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
- H04N19/182—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 a pixel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20172—Image enhancement details
- G06T2207/20182—Noise reduction or smoothing in the temporal domain; Spatio-temporal filtering
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims (3)
- 영상의 블록 경계 영역의 픽셀을 필터링하는 방법에 있어서,블록의 경계 영역을 중심으로 인접하는 두 픽셀 사이의 차이값과 양자화 계수 정보에 근거하는 임계치를 비교하여 디블록킹 필터링의 수행 여부를 판별하는 단계와;상기 판별 결과에 근거하여, 영상의 블록 경계를 중심으로 수평 방향 또는 수직 방향으로 4개씩의 픽셀들에 대해 디블록킹 필터링을 수행하는 단계를 포함하되,상기 디블록킹 필터링을 수행하는 단계에서,상기 블록 경계를 중심으로 바로 인접한 2개의 픽셀들에 대한 스무딩 처리와, 상기 블록 경계에 인접하지 않은 나머지 2개의 픽셀들에 대한 스무딩 처리는 서로 다른 것을 특징으로 하는 블록 경계 영역의 픽셀을 필터링하는 방법.
- 제 1항에 있어서,상기 블록 경계를 중심으로 바로 인접한 2개의 픽셀들에 대한 스무딩 처리는, 평균 연산 방법을 적용하는 것을 특징으로 하는 블록 경계 영역의 픽셀을 필터링하는 방법.
- 제 1항에 있어서,상기 스무딩 처리는, 서로 인접한 픽셀들 간의 차이가 덜하도록 픽셀값을 조정하는 것을 특징으로 하는 블록 경계 영역의 픽셀을 필터링하는 방법.
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KR1020080099675A KR100917208B1 (ko) | 2008-10-10 | 2008-10-10 | 블록 경계 영역 필터링 방법 |
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KR1020080099675A KR100917208B1 (ko) | 2008-10-10 | 2008-10-10 | 블록 경계 영역 필터링 방법 |
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KR1020050118575A Division KR100885441B1 (ko) | 2005-12-07 | 2005-12-07 | 블록 경계 영역 필터링 방법 |
Publications (2)
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KR20080101841A KR20080101841A (ko) | 2008-11-21 |
KR100917208B1 true KR100917208B1 (ko) | 2009-09-15 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20020014711A (ko) * | 2000-08-16 | 2002-02-25 | 모리시타 요이찌 | 디블록킹 필터링 장치 및 방법 |
KR20020053336A (ko) * | 2000-12-27 | 2002-07-05 | 송문섭 | 고속 디블럭킹 필터 장치 |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20020014711A (ko) * | 2000-08-16 | 2002-02-25 | 모리시타 요이찌 | 디블록킹 필터링 장치 및 방법 |
KR20020053336A (ko) * | 2000-12-27 | 2002-07-05 | 송문섭 | 고속 디블럭킹 필터 장치 |
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