디지털홀로그래피와 위상 펼침을 이용한 물체의 3차원 데이터 추출에 관한 연구

Abstract

Generally, many kinds of phase unwrapping methods are used to obtain three-dimensional feature in digital hologram. The Goldstein algorithm is representative method which requires small memory and short execution time for an unwrapping process. In case of a complex structure in wrapping data, however, the Goldstein algorithm is not appropriate comparing to simple structure of wrapping image. The problem occurs when connecting the shortest distance in residue eliminating process and deleting it in calculating. This is because couple of residue locate at boundary line. The proposed algorithm presents a solution of Goldstein algorithm problem using modified calculation of boundary residue. Consequently, we could have good result of three-dimensional data even if the structure has complex feature.