KR940022337A

KR940022337A - Tilt correction method of dot pattern

Info

Publication number: KR940022337A
Application number: KR1019940003653A
Authority: KR
Inventors: 마샤야 나카오
Original assignee: 모리시타 요이찌; 마쯔시다덴기산교 가부시기가이샤
Priority date: 1993-03-02
Filing date: 1994-02-28
Publication date: 1994-10-20
Also published as: JPH06259531A

Abstract

본 발명은 촬상면기준축에 대한 식별대상도트패턴의 기울기를, 적은 연신량으로 보정할 수 있는 도트패턴의 기울기보정방법을 제공하는 것을 목적으로 한 것으로서, 그 구성에서, 화상농도피이크점검출공정 #4에서 도트패턴을 구성하는 전체화소중에서, 화상농도가 극대인 화소, 또는 극소인 화소를 각 도트를 대표하는 대표화소로서 추출하고, 피이크점의 선택공정 #5에서 상기의 대표화소에 의해서 압축도트패턴을 구성하고, 피이크점의 기울기보정공정 #6에서, 상기 압축도트패턴을 구성하는 대표화소를 소정좌표점을 중심으로 회전해서 기울기를 보정한 압축도트패턴을 얻는 것을 특징으로 하는 것이다.An object of the present invention is to provide a tilt correction method of a dot pattern that can correct a tilt of an identification target pattern with respect to an image plane reference axis with a small amount of stretching, and in that configuration, an image concentration peak point detection step # In the entire pixels constituting the dot pattern at 4, the pixel having the maximum image density or the pixel having the minimum image size is extracted as the representative pixel representing each dot, and the compressed dot is selected by the representative pixel in the selection point # 5 of the peak point. The pattern is configured, and in the tilt correction step # 6 of the peak point, the compressed dot pattern having the corrected slope is obtained by rotating the representative pixel constituting the compressed dot pattern about a predetermined coordinate point.

(참고도면) 제20도.(Reference drawing) FIG. 20.

Description

Tilt correction method of dot pattern

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

제2도는 종래예의 도트패턴의 기울기보정방법을 사용하는 패턴식별방법의 순서도,2 is a flowchart of a pattern identification method using a tilt correction method of a dot pattern of a conventional example;

제3도는 화상입력공정을 표시한 도면,3 shows an image input process;

제4도는 예지검출미분연산기의 평면도.4 is a plan view of a predictive detection differential calculator.

Claims

Image of the tilt correction target dot pattern, A / D conversion of the video signal, stored in the image storage means as image data, the tilt of the stored dot pattern with respect to the image plane reference axis, and the entirety of the stored dot pattern A tilt correction method of rotating a pixel about a predetermined coordinate point to obtain a dot pattern correcting the detected tilt, wherein the pixel having the highest image concentration or the pixel having the smallest image density among all the pixels constituting the stored dot pattern Is extracted as a representative pixel representing each dot, a compressed dot pattern is formed by these representative pixels, and a representative pixel constituting the compressed dot pattern is rotated about the predetermined coordinate point to correct the detected tilt. A tilt correction method of a dot pattern, characterized by obtaining a compressed dot pattern.

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