KR970019701A

KR970019701A - Luminance / Color Signal Separation Apparatus and Method Using Binary Edge Pattern

Info

Publication number: KR970019701A
Application number: KR1019950033100A
Authority: KR
Inventors: 김영택
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-09-29
Filing date: 1995-09-29
Publication date: 1997-04-30
Also published as: KR0157529B1

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

화상처리장치에 있어서 복합영상신호로부터 휘도/칼라신호를 분리하는 장치 및 방법에 관한 것이다.An apparatus and method for separating luminance / color signals from composite video signals in an image processing apparatus.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

샘플들간의 상관성이 낮은 여러 가지 다양한 형태의 에지로부터 휘도/칼라신호를 정확하게 분리해낼 수 있는 장치 및 방법을 제공함에 있다.The present invention provides an apparatus and method for accurately separating luminance / color signals from various types of edges having low correlation between samples.

3. 발명의 해결방법의 요지.3. Summary of the Solution of the Invention.

에지의 패턴(pattern)에 따라 필터뱅크로부터 그 패턴에 적합하게 설계된 필터를 선택하여 휘도/칼라신호를 분리해내도록 구성함을 특징으로 한다.It is characterized in that the filter is designed so as to separate the luminance / color signal from the filter bank according to an edge pattern.

4. 발명의 중요한 용도4. Important uses of the invention

샘플들간의 상관성이 낮은 여러 가지 다양한 형태의 에지로부터 휘도/칼라신호를 정확하게 분리해내는 데 사용한다.It is used to accurately separate luminance / color signals from various types of edges with low correlation between samples.

Description

Luminance / Color Signal Separation Apparatus and Method Using Binary Edge Pattern

제1도는 본 발명에 따른 이진에지패턴을 사용한 휘도/칼라신호 분리장치 및 그 주변회로의 구성도,1 is a block diagram of a luminance / color signal separation device using a binary edge pattern and a peripheral circuit thereof according to the present invention;

제2도는 제1도중 이진패턴벡터에 근거하여 필터뱅크로부터 필터의 계수를 선택하여 필터링신호를 계산하는 필터 및 필터계수 선택기의 구현 예시도.2 is a diagram illustrating an implementation of a filter and a filter coefficient selector for selecting a filter coefficient from a filter bank and calculating a filtering signal based on the binary pattern vector in FIG.

Claims

A device for separating luminance / color signals from a composite video signal sampled at a predetermined frequency, the apparatus comprising: means for generating a 3x3 window by predetermined line delay and sampling delay of the composite video signal; Means for classifying an edge pattern from samples of the window having two phases and outputting a binary pattern information signal according to the existence of edges in vertical, horizontal and diagonal directions, and a filter bank for storing a plurality of filter coefficients; Means for selecting and outputting a corresponding filter coefficient from the filter bank according to a pattern information signal, and inputting remaining samples having a phase opposite to a sample determined as a separation position and a sample determined as the separation position from the window. And means for performing filtering on the sample determined as the separation position according to a filter coefficient. Luminance / color signal separation device.

2. The luminance / color signal separation device of claim 1, wherein the binary pattern information signal is a binary pattern vector consisting of six binary numbers representing edges in the horizontal, vertical, upper left, upper right, lower left, and lower right directions, respectively. .

The apparatus of claim 1, wherein the filtered signal is determined as a luminance or a color signal according to filter coefficients stored in the filter bank.

The method according to any one of claims 1 to 3, wherein the means for performing the filtering comprises: first to corresponding to the samples determined as the separation positions and the remaining samples having phases opposite to the samples determined as the separation positions. And a first to fifth multipliers for multiplying the fifth filter coefficients, and an adder for adding the outputs of the first to fifth multipliers and outputting the filtering signal.

An apparatus for separating a luminance / color signal from a composite video signal sampled at a predetermined frequency, the apparatus comprising: a second sample having a second sample delay of the composite video signal, a third sample having a fourth sample delay of the composite video signal, A fourth sample having the first line delay of the composite video signal, a seventh sample having the second line delay of the composite video signal, a fifth sample having the second sample delayed after the first line delay of the composite video signal, and the composite video signal The sixth sample of the fourth sample delay after the first line delay, the eighth sample of the second sample delay after the second line delay, the fourth sample of the fourth sample delay after the second line delay Means for generating a 3x3 window consisting of 9 samples, means for classifying an edge pattern from each sample of the window, and outputting a binary pattern vector according to the presence or absence of an edge; To save as a filter bank Means for selecting and outputting a corresponding filter coefficient from the filter bank according to the binary pattern vector, and inputting remaining samples having a phase opposite to the sample determined as the separation position and the sample determined as the separation position from the window, And means for sampling the sample determined as the separation position according to the selected filter coefficient.

6. The luminance / color signal separation method of claim 5, wherein the distance between adjacent samples in the horizontal direction corresponds to two sampling points and the distance between adjacent samples in the vertical direction corresponds to one line in the interlaced image. Device.

7. A method according to any one of claims 5 and 6, wherein the means for performing filtering comprises: first-corresponding to a sample determined as a separation position and remaining samples each having a phase opposite to the sample determined as the separation position; And an adder configured to add a first multiplier that multiplies a fifth filter coefficient and an adder that adds an output of the first multiplier and outputs a filtering signal.

6. The luminance / color signal separation device of claim 5, wherein the binary pattern vector is composed of six binary digits representing the presence or absence of edges in a horizontal, vertical, top left, top right, bottom left and bottom right directions, respectively.

The apparatus of claim 5, wherein the filtered signal is determined as a luminance or a color signal according to filter coefficients stored in the filter bank.

Means for converting Y, RY, and BY signals into R, G, and B signals, means for converting the R, G, and B signals into an analog form, and R, G, and B signals converted into the analog form on a screen. An image processing apparatus comprising: a second sample delayed by a second sample of a composite video signal sampled at a predetermined frequency; a third sample delayed by a fourth sample of the composite video signal; Fourth sample with delayed primary line, Seventh sample with delayed secondary line of composite video signal, Fifth sample with secondary sample delayed after first line delay of composite video signal, Primary line with composite video signal A sixth sample delayed by the fourth sample after delay, an eighth sample delayed by the second sample after the second line delay, and a ninth sample delayed by the fourth sample after the second line delay after the second video delay Means for generating a 3x3 window and an edge pattern from each sample of said window. Means for outputting a pattern vector of six binary numbers according to the presence or absence of edges in the horizontal, vertical, upper left, upper right, lower left and right directions, and a filter for storing a plurality of filter coefficients as weights of the respective samples. Means for selecting and outputting a corresponding filter coefficient from the filter bank according to the pattern vector, and having a phase different from the second, fourth, sixth, and eighth samples having the same phase from the window. Means for outputting a first color signal by filtering the fifth sample by inputting five samples, and filtering only a predetermined band of the first color signal to output a second color signal; Passing means, means for subtracting the second color signal to a sample determined as the separation position and outputting a Y signal, and means for demodulating the second color signal and outputting RY and BY signals. A luminance / color signal separation device, characterized by consisting of a.

The luminance / color feature of claim 10, wherein the luminance corresponds to two sampling points between distances of adjacent samples in the window and corresponds to one line in the distance-interlaced image between adjacent samples in the vertical direction. Signal separator.

12. The method of claim 10 or 11, wherein the second, fourth, sixth, and eighth samples having the first phase in the window have a weight and a weight of the fifth sample having the second phase. An adder that multiplies corresponding first, second, fourth, fifth, and third filter coefficients, and adds an output of the first to fifth multipliers to output a first color signal; Luminance / color signal separation device characterized in that consisting of.

※ Note: The disclosure is based on the initial application.