KR20080035440A - 이미지 처리장치 및 방법 - Google Patents
이미지 처리장치 및 방법 Download PDFInfo
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- KR20080035440A KR20080035440A KR1020070073440A KR20070073440A KR20080035440A KR 20080035440 A KR20080035440 A KR 20080035440A KR 1020070073440 A KR1020070073440 A KR 1020070073440A KR 20070073440 A KR20070073440 A KR 20070073440A KR 20080035440 A KR20080035440 A KR 20080035440A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005315 distribution function Methods 0.000 claims description 51
- 238000003672 processing method Methods 0.000 claims description 7
- 101100482664 Arabidopsis thaliana ASA1 gene Proteins 0.000 claims description 5
- 101100206895 Arabidopsis thaliana TIR1 gene Proteins 0.000 claims description 5
- 230000000873 masking effect Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 description 9
- 238000001454 recorded image Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241001428800 Cell fusing agent virus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000036971 interstitial lung disease 2 Diseases 0.000 description 2
- 241000321422 Mycteroperca jordani Species 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
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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
- G06T5/20—Image enhancement or restoration using local operators
-
- 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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/30—Noise filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- 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
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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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
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
-
- 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
- G06T2207/20004—Adaptive image processing
- G06T2207/20012—Locally adaptive
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Color Television Image Signal Generators (AREA)
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
Description
Claims (8)
- 칼라 필터 배열(color filter array: CFA) 도메인에서 캡쳐 또는 기록된 이미지의 노이즈들을 줄이기 위한 이미지 처리방법으로서, 상기 방법은:상기 이미지를 녹색 평면, 적색 평면, 및 청색 평면으로 분리하는 단계;상기 녹색 평면, 적색 평면, 및 청색 평면의 각각에 대해, 칼라 평면들의 각각에 대해 작업창을 순서적으로 마스킹함으로써, 칼라 평면들 각각의 각 픽셀이 작업창의 중심에 순서적으로 위치하고 중심픽셀(Cc)로 불리어지도록 하는 마스킹 단계; 및상기 작업창 내의 중심픽셀 이외의 픽셀들을 N개의 엣지 픽셀들(Cedge ,i) 및 M개의 비엣지 픽셀들(Cnon ,j)로 분류하는 단계로서, 여기서 N 및 M 모두는 1 보다 큰 정수이며, i는 1 내지 N 범위의 정수 지수이며, j는 1 내지 M 범위의 정수 지수인, 분류단계; 및 아래 공식에 따라 필터링된 중심픽셀(Cfc)을 계산하고 중심픽셀(Cc)을 필터링된 중심픽셀(Cfc)로 교체하는 단계;를 포함하며, 이에 따라 CFA 도메인에 잔존하는 이미지의 노이즈들이 억제되는, 이미지 처리방법:여기서 WEI1은 제 1 분포함수이며, WEI2는 제 2 분포함수.
- 제 1 항에 있어서,상기 제 1 분포함수는 레일리 분포함수(Rayleigh distribution function)이며, 상기 제 2 분포함수는 다른 레일리 분포함수인, 이미지 처리방법.
- 제 2 항에 있어서,상기 제 1 분포함수는 제 1 계단함수로 구현되며, 상기 제 2 분포함수는 제 2 계단함수로 구현되는, 이미지 처리방법.
- 제 1 항에 있어서,상기 CFA는 베이어 패턴(Bayer pattern)으로 정열되는, 이미지 처리방법.
- 칼라 필터 배열(color filter array: CFA) 도메인에서 캡쳐 또는 기록된 이미지의 노이즈들을 줄이기 위한 이미지 처리장치로서, 상기 이미지 처리장치는:상기 이미지의 녹색 평면, 적색 평면, 및 청색 평면을 개별적으로 수신하는 저장유닛; 및상기 저장유닛에 연결되어, 상기 녹색 평면, 적색 평면, 및 청색 평면의 각각에 대해, 작업창을 순서적으로 마스킹함으로써, 칼라평면들 각각의 픽셀들 각각이 작업창의 중심에 순서적으로 위치하고 중심픽셀(Cc)로 불리어지도록 하며, 상기 작업창 내의 중심픽셀 이외의 픽셀들을 N개의 엣지 픽셀들(Cedge,i) 및 M개의 비엣지픽셀들(Cnon,j)로 분류하며, 여기서 N 및 M 모두는 1 보다 큰 정수이며, i는 1 내지 N 범위의 정수 지수이며, j는 1 내지 M 범위의 정수 지수이며, 아래 공식에 따라 필터링된 중심픽셀(Cfc)을 계산하고 중심픽셀(Cc)을 필터링된 중심픽셀(Cfc)로 교체하는, 이미지 처리유닛; 를 포함하며, 이에 따라 CFA 도메인에 잔존하는 이미지의 노이즈들이 억제되는, 이미지 처리장치:여기서 WEI1은 제 1 분포함수이며, WEI2는 제 2 분포함수.
- 제 5 항에 있어서,상기 제 1 분포함수는 레일리 분포함수(Rayleigh distribution function)이며, 상기 제 2 분포함수는 다른 레일리 분포함수인, 이미지 처리장치.
- 제 6 항에 있어서,상기 제 1 분포함수는 제 1 계단함수로 구현되며, 상기 제 2 분포함수는 제 2 계단함수로 구현되는, 이미지 처리장치.
- 제 5 항에 있어서,상기 CFA는 베이어 패턴(Bayer pattern)으로 정열되는, 이미지 처리장치.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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TW095138329 | 2006-10-18 | ||
TW095138329A TWI319676B (en) | 2006-10-18 | 2006-10-18 | Image processing apparatus and method |
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KR20080035440A true KR20080035440A (ko) | 2008-04-23 |
KR100869134B1 KR100869134B1 (ko) | 2008-11-17 |
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KR1020070073440A KR100869134B1 (ko) | 2006-10-18 | 2007-07-23 | 이미지 처리장치 및 방법 |
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US (1) | US7636112B2 (ko) |
KR (1) | KR100869134B1 (ko) |
TW (1) | TWI319676B (ko) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100891825B1 (ko) * | 2007-11-27 | 2009-04-07 | 삼성전기주식회사 | 디지털 영상의 컬러 노이즈 제거 장치 및 방법 |
US8861885B2 (en) * | 2009-08-26 | 2014-10-14 | Apple Inc. | Directional noise filtering |
US10762795B2 (en) * | 2016-02-08 | 2020-09-01 | Skydio, Inc. | Unmanned aerial vehicle privacy controls |
US11242143B2 (en) | 2016-06-13 | 2022-02-08 | Skydio, Inc. | Unmanned aerial vehicle beyond visual line of sight control |
CN114402334A (zh) | 2019-10-11 | 2022-04-26 | 3M创新有限公司 | 用于预处理具有关注的元素的图像的装置和方法 |
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US5003618A (en) * | 1989-07-14 | 1991-03-26 | University Of Pittsburgh Of The Commonwealth System Of Higher Education | Automatic adaptive anisotropic digital filtering and biasing of digitized images |
DE69331719T2 (de) * | 1992-06-19 | 2002-10-24 | Agfa-Gevaert, Mortsel | Verfahren und Vorrichtung zur Geräuschunterdrückung |
JP3222805B2 (ja) * | 1997-06-17 | 2001-10-29 | 旭光学工業株式会社 | 画像読取装置 |
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CA2309002A1 (en) * | 2000-05-23 | 2001-11-23 | Jonathan Martin Shekter | Digital film grain reduction |
JP4090671B2 (ja) * | 2000-06-19 | 2008-05-28 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 画像処理方法、画像処理装置および画像撮影装置 |
JP4149126B2 (ja) * | 2000-12-05 | 2008-09-10 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 画像処理方法、画像処理装置および画像撮影装置 |
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KR100843084B1 (ko) * | 2006-06-22 | 2008-07-02 | 삼성전자주식회사 | 노이즈 저감 방법 및 장치 |
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TW200820743A (en) | 2008-05-01 |
TWI319676B (en) | 2010-01-11 |
KR100869134B1 (ko) | 2008-11-17 |
US7636112B2 (en) | 2009-12-22 |
US20080094491A1 (en) | 2008-04-24 |
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