KR960033143A - Color signal processor improves the quality of contours on the screen - Google Patents

Color signal processor improves the quality of contours on the screen Download PDF

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Publication number
KR960033143A
KR960033143A KR1019950002507A KR19950002507A KR960033143A KR 960033143 A KR960033143 A KR 960033143A KR 1019950002507 A KR1019950002507 A KR 1019950002507A KR 19950002507 A KR19950002507 A KR 19950002507A KR 960033143 A KR960033143 A KR 960033143A
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KR
South Korea
Prior art keywords
signal
color
receiving
color signal
image quality
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KR1019950002507A
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Korean (ko)
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KR0163914B1 (en
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장지훈
이철호
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김광호
삼성전자 주식회사
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Priority to KR1019950002507A priority Critical patent/KR0163914B1/en
Publication of KR960033143A publication Critical patent/KR960033143A/en
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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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
    • H04N7/0142—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes the interpolation being edge adaptive
    • 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
    • H04N9/70—Circuits for processing colour signals for colour killing
    • 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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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

이 발명은 화면에서 윤곽 부분의 화질을 개선한 색신호 처리장치에 관한 것으로 단판식 고체 촬상소자(Charge Coupled Device)를 이용한 색신호 처리과정에서, 단판식 고체촬상소자의 출력 특성을 이용하여 하드웨어의 크기를 크게 하지 않으며, 화면의 윤곽부분에 나타나는 가짜 색신호 성분을 제거하기 위해 새로운 신호처리방식을 채택한 윤곽부분의 화질을 개선한 색신호 처리장치에 관한 것이다.The present invention relates to a color signal processing apparatus that improves the image quality of a contour portion on a screen. The present invention relates to a color signal processing apparatus using a single-coupled solid-state image pickup device. The present invention relates to a color signal processing apparatus which improves the image quality of an outline portion by adopting a new signal processing method to remove a fake color signal component appearing on the outline portion of a screen without increasing the size.

Description

화면에서 윤곽부분의 화질을 개선한 색신호 처리 장치Color signal processing device that improves the quality of contours

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

제6도는 이 발명의 실시예에 따른 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치의 구성 블럭도.6 is a block diagram of a color signal processing apparatus for improving image quality of a contour portion in a screen according to an embodiment of the present invention.

Claims (5)

고체촬상소자의 출력신호를 입력받아 신호를 지연시키고, 선형보간을 하기 위한 선형 보간부와; 상기 선형 보간부의 신호를 입력받아 휘도신호를 생성하기 위한 휘도신호 생성부와; 상기 선형 보간부로부터 고체촬상소자의 출력신호 및 보간된 신호를 입력받아 고체촬상소자 출력의 반복적인 특성을 이용하여 색신호를 생성하기 위한 제1색차신호 생성부와; 상기 선형 보간부로부터 고체촬상소자의 출력 및 보간된 신호를 입력받아 고체촬상소자 출력의 반복적인 특성을 이용하여 색신호를 생성하기 위한 제2색차신호 생성부와; 상기 제1색차신호 생성부와 제2색차신호 생성부로부터의 감산된 신호를 입력받아 색신호 억압용 신호를 생성하기 위한 색신호 억압용 신호 생성부로 구성되어짐을 특징으로 하는 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치.A linear interpolator for delaying the signal by receiving the output signal of the solid state image pickup device and performing linear interpolation; A luminance signal generator for receiving a signal from the linear interpolator and generating a luminance signal; A first chrominance signal generator for receiving the output signal of the solid state image pickup device and the interpolated signal from the linear interpolation unit and generating a color signal using the repetitive characteristics of the output of the solid state image pickup device; A second chrominance signal generator for receiving the output of the solid state image pickup device and the interpolated signal from the linear interpolation unit to generate a color signal using the repetitive characteristics of the solid state image pickup device; Improving the image quality of the contour portion on the screen, characterized in that it is composed of a color signal suppression signal generator for generating a color signal suppression signal by receiving the subtracted signal from the first color difference signal generator and the second color difference signal generator One color signal processing device. 제1항에 있어서, 상기한 선형 보간부는 제1지연부에서 지연된 신호를 제2지연부에서 다시 지연하고, 상기 제1지연부,제2지연부의 신호를 제1가산기를 이용하여 보간하고, 보간된 신호를 1/2디바이더로 나누는 구조로 구성되어 있는 것을 특징으로 하는 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치.The method of claim 1, wherein the linear interpolator delays the signal delayed by the first delay unit again from the second delay unit, interpolates the signals of the first delay unit and the second delay unit using a first adder, and interpolates the interpolated signal. The color signal processing apparatus of which the image quality of the outline part is improved in the structure which divides the divided signal into 1/2 divider. 제1항에 있어서, 상기한 제1색차신호 생성부는 지연된 신호를 한주기마다 반복되는 아이디신호에 의하여 제1스위치를 통하여 입력받으며, 제1샘플 앤드 홀딩기와 제2샘플 앤드 홀딩기로 S1,S2 두 신호를 홀딩하여 제1감산기를 이용하여 감산을 하고, 제2저역통과기를 통과시켜 높은 주파수 성분을 제거하여 색차신호를 생성하는 것을 특징으로 하는 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치.The method of claim 1, wherein the first color difference signal generation unit receives the delayed signal through the first switch by the ID signal repeated every cycle, and the first sample and holding unit and the second sample and holding unit S1, S2 A color signal processing apparatus for improving image quality of a contour portion of a screen, characterized in that the signal is held and subtracted using a first subtractor, and a high frequency component is removed by passing through a second low pass filter to generate a color difference signal. 제1항에 있어서, 상기한 제2색차신호 생성부는 지연된 신호를 한주기마다 반복되는 아이디신호에 의하여 제2스위치를 통하여 입력받으며, 제3샘플 앤드 홀딩기와 제4샘플 앤드 홀딩기로, S1,S2 두 신호를 홀딩하여 제2감산기를 이용하여 감산을 하고, 제3저역통과기를 통과시켜 높은 주파수 성분을 제거하여 색차신호를 생성하는 구조인 것을 특징으로 하는 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치.The method of claim 1, wherein the second color difference signal generation unit receives the delayed signal through the second switch by the ID signal repeated every cycle, and the third sample and the holding to the fourth sample and holding, S1, S2 Color signal processing with improved image quality in the contour, which is characterized by holding two signals, subtracting using a second subtractor, and removing a high frequency component by passing through a third low pass to generate a color difference signal. Device. 제1항에 있어서, 상기한 색신호 억압용 신호 생성부는 한주기마다 반복되는 아이디신호에 의하여 상기 제1감산기 및 제2감산기의 출력을 입력받는 제3스위치로 입력받아 미분기 및 절대치부를 통하여 롬에 저장되었다가 색신호 억압용 신호로 사용되는 것을 특징으로 하는 화면에서 윤곽부분의 화질을 개선한 색신호 처리장치.The method of claim 1, wherein the color signal suppression signal generator is input to a third switch receiving the outputs of the first subtractor and the second subtractor by an ID signal repeated every cycle to the ROM through the differentiator and the absolute value unit. And a color signal processing apparatus for improving image quality of a contour portion of a screen, which is stored and used as a signal for suppressing color signals. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950002507A 1995-02-11 1995-02-11 The improved color signal process apparatus for the picture quality of a contour in screen KR0163914B1 (en)

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KR1019950002507A KR0163914B1 (en) 1995-02-11 1995-02-11 The improved color signal process apparatus for the picture quality of a contour in screen

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KR960033143A true KR960033143A (en) 1996-09-17
KR0163914B1 KR0163914B1 (en) 1999-01-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446721B1 (en) * 1997-07-30 2004-11-03 엘지전자 주식회사 Interpolation and contour compensating circuit of a digital still camera, in particular relating to increasing an effect of an image contour emphasis of an image signal by preventing the amplitude of a contour signal from getting smaller while increasing the frequency of the contour signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446721B1 (en) * 1997-07-30 2004-11-03 엘지전자 주식회사 Interpolation and contour compensating circuit of a digital still camera, in particular relating to increasing an effect of an image contour emphasis of an image signal by preventing the amplitude of a contour signal from getting smaller while increasing the frequency of the contour signal

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