서지주요정보
직선 불변량과 색인 논리 필터를 이용한 평면 물체 인식 = Planar object recognition using line invariants and indexing logic filter
서명 / 저자 직선 불변량과 색인 논리 필터를 이용한 평면 물체 인식 = Planar object recognition using line invariants and indexing logic filter / 정문호.
저자명 정문호 ; Jeong, Mun-Ho
발행사항 [대전 : 한국과학기술원, 1996].
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소장정보

등록번호

8006808

소장위치/청구기호

학술문화관(문화관) 보존서고

MADE 96022

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

We present a vision system to recognize planar objects composed of lines on condition of partial view and large image distortion by perspective effect. Under projective transformation, we cannot use euclidean geometric features such as length, angle and size ratio of lines. As a result, the recognition problem becomes a very difficult task. Our system uses the projective invariants of five lines on a plane to find a corresponding model stored in a database. However, a set of five coplanar lines produces 120 different invariant values depending on the order of five lines. Therefore, the search space to find a corresponding model in the database becomes so huge when many models are considered. We introduce the concept of line convex hull defined by five lines. Line convex hull gives a unique ordering to a set of five lines under projective transformation, so they have a single invariant value. In addition,this classifies them into 21 geometric types. ILF(Indexing Logic Filter) indexes models using line convex hull. ILF produces indexing logic value and order as index keys. They have a very strong power in discrimination of data. Therefore search space can be reduced remarkably. Also we present a recognition method of 3D objects, which are composed of planar panel and stiffeners. To do this, we select planar lines in 3D lines of an object using a stereo camera system. And then we recognized 3D objects in 2D recognition system by the selected planar lines. In series of real experiments using fifteen prototype panels, the system successfully recognizes panels in the database.

서지기타정보

서지기타정보
청구기호 {MADE 96022
형태사항 iii, 52 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Mun-Ho Jeong
지도교수의 한글표기 : 권인소
지도교수의 영문표기 : In-So Kweon
학위논문 학위논문(석사) - 한국과학기술원 : 자동화및설계공학과,
서지주기 참고문헌 수록
주제 물체인식
투사불변량
논리색인필터
직선볼록고리
Object recognition
Projective invariants
ILF
Line convex hull
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