KR100908856B1 - 화상 처리 방법 및 화상 처리기 - Google Patents
화상 처리 방법 및 화상 처리기 Download PDFInfo
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- KR100908856B1 KR100908856B1 KR1020060091563A KR20060091563A KR100908856B1 KR 100908856 B1 KR100908856 B1 KR 100908856B1 KR 1020060091563 A KR1020060091563 A KR 1020060091563A KR 20060091563 A KR20060091563 A KR 20060091563A KR 100908856 B1 KR100908856 B1 KR 100908856B1
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- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 105
- 238000000605 extraction Methods 0.000 claims abstract description 50
- 239000000284 extract Substances 0.000 claims abstract description 9
- 238000009499 grossing Methods 0.000 claims description 9
- 230000000877 morphologic effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 24
- 239000003550 marker Substances 0.000 description 19
- 230000003287 optical effect Effects 0.000 description 8
- 230000010354 integration Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000004256 retinal image Effects 0.000 description 1
- 210000001210 retinal vessel Anatomy 0.000 description 1
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/12—Edge-based segmentation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- G06T7/155—Segmentation; Edge detection involving morphological operators
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- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/36—Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given point; Non-linear local filtering operations, e.g. median filtering
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1347—Preprocessing; Feature extraction
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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
- G06T2207/20036—Morphological image processing
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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
- G06T2207/20192—Edge enhancement; Edge preservation
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30088—Skin; Dermal
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- G—PHYSICS
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30101—Blood vessel; Artery; Vein; Vascular
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
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Abstract
Description
Claims (26)
- 계조 캡쳐 화상으로부터 선분 요소를 추출하는 화상 처리 방법으로서,상기 계조 캡쳐 화상에 따른 화상을 2진화하고, 상기 2진화 화상으로부터 상기 계조 캡쳐 화상이 미리 결정된 임계치로 2진화 된 영역을 추출 영역으로서 선택하는 단계와;상기 선택된 추출 영역상에 몰포로지(morphological) 오퍼레이터를 복수의 방향으로 주사하고, 각 방향에서 추출된 화상으로부터 선형 요소를 추출하는 몰포로지(morphology) 처리를 실행하는 단계와;상이한 콘트라스트비를 갖는 상기 추출된 선형 요소들로부터, 콘트라스트비가 높은 부분과 콘트라스트비가 낮은 부분을 갖고 상기 콘트라스트비가 높은 부분으로부터 선분의 성장 방향으로 연속하는, 연속적인 선분 요소를 추출하는 단계를 포함하는 화상 처리 방법.
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- 제1항에 있어서, 상기 계조 캡쳐 화상을 평활화하여 상기 계조 캡쳐 화상 주위의 노이즈를 제거하고 엣지 강조 처리하여 상기 계조 캡쳐 화상에 따른 화상을 생성하는 단계를 더 포함하는 화상 처리 방법.
- 제1항에 있어서,상기 추출된 선분 요소를 평활화하여 상기 추출된 선분 요소 주위의 노이즈를 제거하고 엣지 강조 처리하는 단계와;상기 평활화되고 엣지 강조된 선분 요소를 2진화하여 선분 데이터를 생성하는 단계를 더 포함하는 화상 처리 방법.
- 제1항에 있어서, 상기 몰포로지 처리를 실행하는 단계는,상기 몰포로지 오퍼레이터를 복수의 방향으로 주사하고, 각 방향에서 오픈 처리 화상을 생성하는 단계와;상기 계조 캡쳐 화상에 따른 화상으로부터 상기 각 방향에서 탑햇(top hat) 처리 화상과 상기 각 방향에서 오픈 처리 화상을 생성하는 단계와;상기 각 방향에서 탑햇 처리 화상을 가산하여 상기 선형 요소를 추출하는 단계를 더 포함하는 화상 처리 방법.
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- 계조 캡쳐 화상으로부터 선분 요소를 추출하는 화상 처리기로서,피검체의 화상을 캡쳐하는 화상 캡쳐 장치와;상기 화상 캡쳐 장치가 캡쳐한 상기 계조 캡쳐 화상에 따른 화상을 2진화하기 위하여, 상기 계조 캡쳐 화상이 미리 결정된 임계치로 2진화 된 영역을 추출 영역으로서 선택하고, 상기 선택된 추출 영역에 대하여 몰포로지 오퍼레이터를 복수의 방향으로 주사하고 각 방향에서 추출된 화상으로부터 선형 요소를 추출하여 몰포로지 처리를 수행하고, 상이한 콘트라스트비를 갖는 상기 추출된 선형 요소들로부터, 콘트라스트비가 높은 부분과 콘트라스트비가 낮은 부분을 갖고 상기 콘트라스트비가 높은 부분으로부터 선분의 성장 방향으로 연속하는, 연속적인 선분 요소를 추출하는 선분 추출 장치를 포함하는 화상 처리기.
- 삭제
- 삭제
- 제14항에 있어서, 상기 선분 추출 장치는, 상기 계조 캡쳐 화상을 평활화하여 상기 계조 캡쳐 화상 주위의 노이즈를 제거하고 엣지 강조 처리함으로써 상기 캡쳐 화상에 따른 화상을 생성하는 것인, 화상 처리기.
- 제14항에 있어서, 상기 선분 추출 장치는, 상기 추출된 선분 요소를 평활화하여 상기 추출된 선분 요소 주위의 노이즈를 제거하고 엣지 강조 처리하며, 그 평활화되고 엣지 강조된 선분 요소를 2진화하여 선분 데이터를 생성하는 것인, 화상 처리기.
- 제14항에 있어서, 상기 선분 추출 장치는, 상기 몰포로지 오퍼레이터를 복수의 방향으로 주사하고, 각 방향에서 오픈 처리 화상을 생성하며, 상기 계조 캡쳐 화상에 따른 화상으로부터 상기 각 방향에서 탑햇 처리 화상과 상기 각 방향에서 오픈 처리 화상을 생성하여, 각 방향에서 탑햇 처리 화상을 가산하여 상기 선형 요소를 추출하기 위한 상기 몰포로지 처리를 수행하는 것인, 화상 처리기.
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JP2006025690A JP2007207009A (ja) | 2006-02-02 | 2006-02-02 | 画像処理方法及び画像処理装置 |
JPJP-P-2006-00025690 | 2006-02-02 |
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KR1020090026086A KR100944171B1 (ko) | 2006-02-02 | 2009-03-26 | 화상 처리 방법 및 화상 처리기 |
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US (1) | US8606012B2 (ko) |
EP (2) | EP1918852B1 (ko) |
JP (1) | JP2007207009A (ko) |
KR (2) | KR100908856B1 (ko) |
CN (1) | CN101013469B (ko) |
DE (2) | DE602006015033D1 (ko) |
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US8606012B2 (en) | 2013-12-10 |
EP1816588B1 (en) | 2010-06-23 |
CN101013469B (zh) | 2011-01-12 |
CN101013469A (zh) | 2007-08-08 |
KR20090040412A (ko) | 2009-04-24 |
KR20070079552A (ko) | 2007-08-07 |
EP1816588A1 (en) | 2007-08-08 |
EP1918852B1 (en) | 2009-12-09 |
DE602006015033D1 (de) | 2010-08-05 |
EP1918852A1 (en) | 2008-05-07 |
DE602006011025D1 (de) | 2010-01-21 |
KR100944171B1 (ko) | 2010-02-24 |
US20070177825A1 (en) | 2007-08-02 |
JP2007207009A (ja) | 2007-08-16 |
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