KR930018924A

KR930018924A - Resolution conversion method

Info

Publication number: KR930018924A
Application number: KR1019920002852A
Authority: KR
Inventors: 강구수; 김재호
Original assignee: 정용문; 삼성전자 주식회사
Priority date: 1992-02-25
Filing date: 1992-02-25
Publication date: 1993-09-22
Also published as: KR940010475B1

Abstract

입력 영상을 겨치지 않게 2행 2열 마스크를 좌측 상단에서 우측 상단까지 씌우고 각 마스트에 대하여 3행3열로 해상도를 변환하는 방법에 관한 것이다. ]The present invention relates to a method of converting a resolution into three rows and three columns for each mast by covering a two-row, two-column mask from the upper left to the upper right so as not to miss the input image. ]

수직 방향으로 짝수번째 마스크이면 3행 3열의 1행을 제1화소의 중간밝기, 제2화소의 밝기로 변화하고 상기 마스크가 수평방향으로도 짝수번째 마스크이고 제1 및 제2화소가 흑이면 2행을 백, 흑, 백 밝기로 변환하고 상기 제1및 제2화소중 어느 하나가 흑이 아니면 2행을 제1화소의 밝기, 제1 및 제2화소중 어느 하나가 흑이 아니면 2행을 제1화소의 밝기, 제1 및 제2화소의 중간밝기, 제2화소의 밝기로 변환하며 3행을 제3화소의 밝기, 제3및 제4화소의 중간밝기, 제4화소의 밝기로 변화하는 수직 방향으로 홀수번째 마스크이면 3행 3열의 1행을 제1화소의 밝기, 제1 및 제2화소의 중간밝기, 제2화소의 밝기로 변환하며 상기 마스크가 수평 방향으로 짝수번째 마스크이고 제3및 제4화소가 흑이면 2행을 흑, 백, 흑으로 변환하며 상기 마스크가 수평방향으로 홀수번째 마스크이고 제3및 제4화소가 흑이면 2행을 백, 흑, 백으로 변환하고 상기 제3 및 제4화소중 어느 하나가 흑이 아니면 2행을 제1화소의 밝기, 제1 및 제4화소의 중간밝기, 제2화소의 밝기로 변환하며 3행을 제3화소의 밝기, 제3 및 제4화소의 중간 밝기, 제4화소의 밝기로 변환하여 해상도를 높임으로써 화질을 개선한다.If the even numbered mask in the vertical direction is changed, the first row of 3 rows and 3 columns is changed to the intermediate brightness of the first pixel and the brightness of the second pixel, and if the mask is the even number mask in the horizontal direction and the first and second pixels are black, 2 Convert rows to white, black, and white brightness, and if either one of the first and second pixels is not black, two rows are replaced if one of the brightness of the first pixel, and one of the first and second pixels is not black. Changes the brightness of the first pixel, the intermediate brightness of the first and second pixels, the brightness of the second pixel, and changes three rows to the brightness of the third pixel, the intermediate brightness of the third and fourth pixels, and the brightness of the fourth pixel. In the vertical direction, the first row of three rows and three columns is converted into the brightness of the first pixel, the intermediate brightness of the first and second pixels, and the brightness of the second pixel. If the third and fourth pixels are black, two rows are converted into black, white, and black, and the mask is odd in the horizontal direction. If the mask and the third and fourth pixels are black, two rows are converted to white, black, and white, and if either of the third and fourth pixels is not black, the second row is the brightness of the first pixel, the first and fourth. The image quality is improved by converting the intermediate brightness of the pixel and the brightness of the second pixel and converting three rows into the brightness of the third pixel, the intermediate brightness of the third and fourth pixels, and the brightness of the fourth pixel to increase the resolution.

Description

Resolution conversion method

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

제1도는 본 발명이 적용되는 팩시밀리의 블럭도.1 is a block diagram of a facsimile to which the present invention is applied.

제4도는 본 발명의 해상도 변환 방법 예시도.4 is a diagram illustrating a resolution conversion method of the present invention.

제5도는 본 발명의 다른 해상도 변환 방법 예시도.5 is a diagram illustrating another resolution conversion method of the present invention.

제6도는 제4도, 및 제5도의 일 적용 예시도.6 is an application example of FIG. 4, and FIG.

제7도는 본 발명의 해상도 변환 흐름도.7 is a resolution conversion flowchart of the present invention.

Claims

A method of converting a two-row, two-column mask from the upper left to the upper right so that the input image does not overlap, and converting the resolution to three rows and three columns with respect to each mask. If the brightness of the pixel, the intermediate brightness of the first and first pixels, and the brightness of the second pixel are changed, and the mask is an even numbered mask even in the horizontal direction, and the first and second pixels are black, two rows are white, black, and white. If the horizontal direction of the mask is an odd mask and the first and second pixels are black, two rows are converted to black, white, and black, and if either of the first and second pixels is not black, two rows are replaced. If one of the brightness of the first pixel, one of the first and second pixels is not black, two rows are converted into the brightness of the first pixel, the intermediate brightness of the first and second pixels, and the brightness of the second pixel, and the third row is Converting brightness of three pixels, intermediate brightness of third and fourth pixels, brightness of fourth pixel In the first step and the odd-numbered mask in the vertical direction, the first row of three rows and three columns is converted into the brightness of the first pixel, the intermediate brightness of the first and second pixels, and the brightness of the second pixel, and the mask is even in the horizontal direction. If the mask is black and the third and fourth pixels are black, two rows are changed to black, white, and black. If the mask is an odd mask in the horizontal direction, and the third and fourth pixels are black, the second row is black, white, and white. And converts two rows to the brightness of the first pixel, the intermediate brightness of the first and fourth pixels, and the second pixel brightness if either of the third and fourth pixels is not black, and the third row to the brightness of the third pixel. And a second process of converting the intermediate brightness of the third and fourth pixels into the brightness of the fourth pixel.

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