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3차원 내시경에서 기본영상 변환을 통한 재생영상의 깊이감 개선 연구
서광범,신승호 강원대학교 정보통신연구소 2008 정보통신논문지 Vol.12 No.-
Three-dimensional(3D) image is an image that provides the feeling of depth by perceiving different perspectives from two eyes. Nowadays, use of 3D image is being expended into area such as HDTV, computer monitors and cellular phone screens. In this thesis, 3D image formed on endoscope by using non-glass type lenticular lens method is implemented and investigated to solve the viewing angles limitation. For the first method, the distance between two eyes and the images collected from limited viewing angle of an endoscope was expanded to make a proper gap between two eyes. In this method, the elemental image and the distance between two images during reconstruction are simultaneously, magnified with same rate to provide the most optimal viewing distance for a human to feel it as 3D. However expanding the elemental image with arbitrary ratio causes discontinuity between two pixels in the elemental image. To compensate this problem, linearly interpolated new pixel can be inserted between two pixels. In the second method, synthetic images located at the corresponding position for two eyes were composed based on the collected two elemental images. This images were obtained from calculating the displacement and the location of each pixel by comparing both elemental images. This was compared with the actual images obtained from the same location. This confirmed that by combining the image with a new viewing: angle obtained from left and right elemental image using elemental image conversion it is possible to realize a 3D endoscope image with a normal viewing angle.
집적영상에서 기본영상 재배열시 수렴광축을 이용한불연속성 개선
유현우,서광범,이호철,차성도,신승호 한국광학회 2019 한국광학회지 Vol.30 No.3
집적영상에서 깊이역전 문제를 해결하기 위해 기본영상 재배열이 제안되었지만 시점영상이 연속적으로 재생되지 못하는 불연 속성 문제를 포함하고 있다. 본 논문에서는 불연속성 요인을 분석하였다. 수렴광축으로 기본영상을 획득하고, 재배열한 후 실상및 허상모드를 동시에 재생하는 불연속성 개선 방법을 제안하고, 평행광축을 이용하여 획득하고 실상모드로 재생하는 일반적인 방법과 비교하여 유효성을 정량적으로 검증하였다.