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학술지 Distortion Compensation of Reconstructed Hologram Image in Digital Holographic Display Based on Viewing Window
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저자
박민식, 김현의, 추현곤, 김진웅, 박정희
발행일
201708
출처
ETRI Journal, v.39 no.4, pp.480-492
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.17.0116.0049
협약과제
15MR8100, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
초록
A holographic display based on a viewing window enables the converging of a reconstruction wave into a viewing window by means of an optical system. Accordingly, a user can observe a reconstructed hologram image, even with a small diffraction angle. It is very difficult to manufacture an optical system with no aberrations; thus, it is inevitable that a certain amount of wave aberrations will exist. A viewing-window-based holographic display, therefore, always includes distortions in an image reconstructed from a hologram pattern. Compensating the distortions of a reconstructed image is a very important technical issue because it can dramatically improve the performance when reconstructing a digital three-dimensional content image from a hologram pattern. We therefore propose a method for suppressing image distortion by measuring and compensating the wave aberration calculated from a Zernike polynomial, which can represent arbitrary wave aberrations. Through our experimental configuration using only numerical calculations, our proposed method decreased the reconstructed image distortion by more than 28%.
키워드
Holographic display, Wave aberration, Zernike polynomial
KSP 제안 키워드
Image Distortion, Numerical calculation, Three dimensional(3D), Wave aberration, Zernike Polynomial, distortion compensation, holographic display, optical system, reconstructed image, viewing window
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