KR930019046A - Color Reproducibility Correction Circuit of Digital Camera - Google Patents

Color Reproducibility Correction Circuit of Digital Camera Download PDF

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Publication number
KR930019046A
KR930019046A KR1019920002664A KR920002664A KR930019046A KR 930019046 A KR930019046 A KR 930019046A KR 1019920002664 A KR1019920002664 A KR 1019920002664A KR 920002664 A KR920002664 A KR 920002664A KR 930019046 A KR930019046 A KR 930019046A
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KR
South Korea
Prior art keywords
gamma
unit
color reproducibility
output
correcting
Prior art date
Application number
KR1019920002664A
Other languages
Korean (ko)
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KR950005067B1 (en
Inventor
박상조
Original Assignee
강진구
삼성전자 주식회사
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Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019920002664A priority Critical patent/KR950005067B1/en
Publication of KR930019046A publication Critical patent/KR930019046A/en
Application granted granted Critical
Publication of KR950005067B1 publication Critical patent/KR950005067B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/82—Camera processing pipelines; Components thereof for controlling camera response irrespective of the scene brightness, e.g. gamma correction
    • H04N23/83—Camera processing pipelines; Components thereof for controlling camera response irrespective of the scene brightness, e.g. gamma correction specially adapted for colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/85—Camera processing pipelines; Components thereof for processing colour signals for matrixing

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

이 발명은 디지탈 카메라에서 색재현성을 보정하기 위한 수단과 관련된 것으로서, 종래에는 이러한 시스템에서 R,G,B의 아날로그 신호를 그대로 감마보정한 후 리니어 매트릭스에 의한 보정처리를 행하므로서 여기에서 사용되는 아날로그 →디지탈 변환의 AD 컨버터 특성상 정확한 색재현상을 보장할 수 없는 등의 그 색재현성 품질에 문제가 있었다.The present invention relates to a means for correcting color reproducibility in a digital camera. In the related art, an analog signal used here is performed by gamma-correcting an analog signal of R, G, and B in such a system and then performing a correction process using a linear matrix. There was a problem in the color reproducibility quality, such as the inability of accurate color reproduction due to the AD converter characteristics of the digital conversion.

이 발명은 종래 기술의 문제점을 개선할 수 있도록 R,G,B입력을 전처리 감마처리하는 전처리 감마부(11)와, 이 전처리 감마부(11)의 출력이 AD 컨버터부 (12)를 거쳐 제공되면 이것으로부터 초기신호를 생성하는 역감마부(13) 및 이 역감마부(13)의 출력으로 부성분을 보정하는 리니어 매트릭스(14)와, 리니어 매트릭스(14)의 출력에서 선형 보정처리하는 감마보정부(15)를 일체로 포함한 구성의 색재현성 보정회로를 제공하는데 있다.The present invention provides a preprocessing gamma unit 11 for preprocessing gamma processing of R, G, and B inputs, and an output of the preprocessing gamma unit 11 through the AD converter unit 12 to improve the problems of the prior art. In this case, the inverse gamma part 13 which generates an initial signal from the linear gamma part 13 and the linear matrix 14 for correcting the subcomponents at the output of the inverse gamma part 13 and the gamma beam which is linearly corrected at the output of the linear matrix 14 are obtained. An object of the present invention is to provide a color reproducibility correction circuit including the government unit 15 integrally.

Description

디지탈 카메라의 색재현성 보정회로Color Reproducibility Correction Circuit of Digital Camera

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

제2도는 제1도와 관련된 감마보정 벡터 궤적을 나타낸 참고도.2 is a reference diagram showing a gamma correction vector trajectory associated with FIG.

제3도는 이 발명에 의한 시스템 회로 블럭도.3 is a system circuit block diagram according to the present invention.

제4도는 제3도의 전처리 감마부에서 처리되는 동작곡선의 참고도.4 is a reference diagram of an operation curve processed by the preprocessing gamma part of FIG.

제5도는 제3도의 역감마부의 처리조작을 시스템회로에서 제어하는 상태를 동작플로챠트.5 is an operation flowchart showing a state in which a system circuit controls the processing operation of the inverse gamma portion of FIG.

제6도는 제3도에서 리니어 매트릭스의 실시예도.6 is an exemplary embodiment of a linear matrix in FIG.

Claims (1)

아날로그에 색상입력(Ri, Gi, Bi)을 구간별로 전처리 감마처리를 행하는 전처리 감마부(11)와, 이 전처리 감마부(11)의 출력을 디지탈 신호로 변환하는 AD컨버터부(12)와, 이 AD 컨버터부(12)의 출력에서 부성분을 보정처리하는 리니어 매트릭스(14)와, 이 리니어 매트락스(14)의 출력으로부터 선형 데이타로 근접시키는 감마보정부(15)와, 로 된 디지탈 카메라의 색재현성 보정회로.A pre-processing gamma unit 11 which performs pre-processing gamma processing on the color inputs Ri, Gi, and Bi for each section, an AD converter unit 12 for converting the output of the pre-processing gamma unit 11 into a digital signal, A linear matrix 14 for correcting subcomponents at the output of the AD converter section 12, a gamma correction unit 15 for approaching linear data from the output of the linear matrox 14, and a digital camera of Color reproducibility correction circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920002664A 1992-02-21 1992-02-21 Apparatus for compensating color regeneration of digital video camera KR950005067B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920002664A KR950005067B1 (en) 1992-02-21 1992-02-21 Apparatus for compensating color regeneration of digital video camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920002664A KR950005067B1 (en) 1992-02-21 1992-02-21 Apparatus for compensating color regeneration of digital video camera

Publications (2)

Publication Number Publication Date
KR930019046A true KR930019046A (en) 1993-09-22
KR950005067B1 KR950005067B1 (en) 1995-05-17

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Application Number Title Priority Date Filing Date
KR1019920002664A KR950005067B1 (en) 1992-02-21 1992-02-21 Apparatus for compensating color regeneration of digital video camera

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KR (1) KR950005067B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101360268B1 (en) * 2012-12-28 2014-02-12 (주)실리콘화일 Color noise cancellation method of the image sensor

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KR950005067B1 (en) 1995-05-17

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