KR970056928A - Image Noise Reduction Circuit - Google Patents

Image Noise Reduction Circuit Download PDF

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Publication number
KR970056928A
KR970056928A KR1019950057822A KR19950057822A KR970056928A KR 970056928 A KR970056928 A KR 970056928A KR 1019950057822 A KR1019950057822 A KR 1019950057822A KR 19950057822 A KR19950057822 A KR 19950057822A KR 970056928 A KR970056928 A KR 970056928A
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KR
South Korea
Prior art keywords
image data
color
component
color component
data
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Application number
KR1019950057822A
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Korean (ko)
Inventor
김철
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배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950057822A priority Critical patent/KR970056928A/en
Publication of KR970056928A publication Critical patent/KR970056928A/en

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Abstract

본 발명은 영상노이즈 제거회로에 관한 것으로, 디자탈처리된 R컬러성부의 선행 영상데이터를 저장하고 그 저장된 영상데이터와 후속의 영상데이터의 차를 기준치와 비교하여 R컬러성분에서 백색노이즈성분을 검출하는 R 컬러필터(10)와, G컬러성분에서 선행 영상데이터를 저장하고 그 저장된 영상데이터와 후속의 영상데이터의차를 기준치와 비교하여 G컬러성분에서 백색노이즈성분을 검출하는 G컬러 필터(20), B컬러성분의 선행 영상데이터룰 저장하고 그 저장된 영상데이터와 후속의 영상데이터의 차를 기준치와 비교하여 B컬러성분에서 백색노이즈성분을 검출하는 B컬러필터(30), 상기 R/G/B컬러필터(10,20,30)에서의 백색노이즈성분 검출결과를 논리 AND처리하여 각R/G/B컬러피터(10,20,30)의 스위칭 제어신호에 의해 스위칭제어되어 상기 선행의 R/G/B컬러성분데이터 또는 상기 후행의 R/G/B컬러성분데이터를 동시적으로 스위칭출력하는 영상데이터스위칭부(50)를 포함하여 구성된 것이다.The present invention relates to an image noise removing circuit, which stores a preceding image data of a digitally processed R color portion and detects a white noise component from an R color component by comparing a difference between the stored image data and a subsequent image data with a reference value. G color filter 10 for storing the preceding image data in the G color component and detecting the white noise component in the G color component by comparing the difference between the stored image data and the subsequent image data with the reference value. And B color filter 30 for storing a white noise component in the B color component by comparing the difference between the stored image data and the subsequent image data with a reference value. The white noise component detection results of the B color filters 10, 20, and 30 are logically ANDed, and are controlled by the switching control signals of the respective R / G / B color Peters 10, 20, and 30 so that the preceding R is controlled. / G / B Colorability Data or be configured to include the image data switching section 50 for switching the output of R / G / B color component data of the trailing simultaneously.

Description

영상 노이즈 제거회로Video Noise Reduction Circuit

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

제1도는 본 발명의 바람직한 실시예에 따른 영상노이즈 제거회로구성을 나타낸 도면이다.1 is a diagram showing the configuration of an image noise removing circuit according to a preferred embodiment of the present invention.

Claims (2)

디지탈처리된 R컬러성분의 선행 영상데이터를 저장하고 그 저장된 영상데이터와 후속의 영상데이터의 차를 기준치와 비교하여 R컬러성분에서 백색노이즈성분을 검출하는 R 컬러필터(10)와, G컬러성분에서 선행 영상데이터를 저장하고 그 저장된 영상데이터와 후속의 영상데이터의 차를 기준치와 비교하여 G컬러성분에서 백색노이즈성분을 검출하는 G컬러필터(20), B컬러성분의 선행 영상데이터룰 저장하고 그 저장된 영상데이터와 후속의 영상데이터의 차를 기준치와 비교하여 B커러성분에서 백색노이즈성분을 검출하는 B컬러필터(30), 상기 R/G/B컬러필터(10,20,30)에서의 백색노이즈성분 검출결과를 논리AND처리하여 각R/G/B컬러필터(10,20,30)의 영상데이터를 스위칭출력하기 위한 스위칭제어신호를 생성하는 논리게이트(40), 상기논리게이트(40)의스위칭제어신호에 의해 스위칭제어되어 상기 선행의 R/G/B컬러성분데이터 또는 상기 후행의R/G/B컬러성분데이터를 동시적으로 스위칭출력하는 영상데이터 스위칭부 (50)를 포함하여 구성된 것을 특징으로 하는 영상노이즈 제거회로.An R color filter 10 and a G color component which store the preceding image data of the digitally processed R color component and detect the white noise component in the R color component by comparing the difference between the stored image data and the subsequent image data with a reference value. Stores the preceding image data and compares the difference between the stored image data and the subsequent image data with a reference value to detect the white noise component in the G color component 20, and stores the preceding image data rule of the B color component. In the B color filter 30, the R / G / B color filter 10, 20, 30, which detects the white noise component in the B color component by comparing the difference between the stored image data and the subsequent image data with a reference value. A logic gate 40 and a logic gate 40 for generating a switching control signal for switching and outputting image data of each of the R / G / B color filters 10, 20, and 30 by performing a logic AND process on the detection result of the white noise component. Switching control And an image data switching unit 50 which is switched by a call and simultaneously switches and outputs the preceding R / G / B color component data or the subsequent R / G / B color component data. Image noise reduction circuit. 제1항에 있어서,각 R/G/B컬러필터(10,20,30)는 대응하는R/G/B 컬러성분을 클럭신호에 의해 저장하는 데이터저장부(12,22,32)와 데이터저장부(12,22,32)에 저장된 선행의 R/G/B컬러성분과 후속의R/G/B컬러성분을 감산하여 차를 구하는 감산부(14,24,34), 상기 감산부(14,24,34)의 차신호와 기준데이터설정부(18,28,38)에 설정된 화이트레벨기준치를 비교하여 백색노이즈성분의 검출신호를 생성하는 비교부(16,26,36)를 포함하여 구성된 것을 특징으로 하는 영상노이즈 제거회로.The data storage unit (12, 22, 32) and data of claim 1, wherein each of the R / G / B color filters (10, 20, 30) stores corresponding R / G / B color components by a clock signal. A subtraction unit 14, 24, 34 for subtracting the preceding R / G / B color component and the subsequent R / G / B color component stored in the storage units 12, 22, and 32 to obtain a difference; A comparison unit (16, 26, 36) for generating a detection signal of the white noise component by comparing the difference signal of the 14, 24, 34 and the white level reference value set in the reference data setting unit (18, 28, 38); Image noise elimination circuit, characterized in that configured. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950057822A 1995-12-27 1995-12-27 Image Noise Reduction Circuit KR970056928A (en)

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Application Number Priority Date Filing Date Title
KR1019950057822A KR970056928A (en) 1995-12-27 1995-12-27 Image Noise Reduction Circuit

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Application Number Priority Date Filing Date Title
KR1019950057822A KR970056928A (en) 1995-12-27 1995-12-27 Image Noise Reduction Circuit

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KR970056928A true KR970056928A (en) 1997-07-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100860877B1 (en) * 2007-04-30 2008-09-29 엠텍비젼 주식회사 Apparatus and method for removing color noise

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100860877B1 (en) * 2007-04-30 2008-09-29 엠텍비젼 주식회사 Apparatus and method for removing color noise

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