- 著者
- Tomioka Satoshi Nishiyama Shusuke
- 出版者
- Optical Society of America
- 雑誌
- Applied Optics (ISSN:1559128X)
- 巻号頁・発行日
- vol.51, no.21, pp.4984-4994, 2012-07-20
- 被引用文献数
- 23
Phase unwrapping for a noisy image suffers from many singular points. Singularity-spreading methods are useful for the noisy image to regularize the singularity. However, the methods have a drawback of distorting phase distribution in a regular area that contains no singular points. When the singular points are confined in some local areas, the regular region is not distorted. This paper proposes a new phase unwrapping algorithm that uses a localized compensator obtained by clustering and by solving Poisson's equation for the localized areas. The numerical results demonstrate that the proposed method can improve the accuracy compared with other singularity-spreading methods.
- 著者
- Min Eun Jung Shin Jun Geun Lee Jae Hwi Yasuno Yoshiaki Lee Byeong Ha
- 出版者
- Optical Society of America
- 雑誌
- Applied optics (ISSN:1559128X)
- 巻号頁・発行日
- vol.52, no.21, pp.5143-5151, 2013-07
We propose a single-step method appropriated for a fiber-optic probe-based full-range spectral domain optical coherence tomography (OCT). The fiber-optic probe was scanned over a sample with a magnetically driven actuator. In the reference arm, a phase shift of π/2 was applied during two neighbor axial scanning, from which the complex spectral interferogram was directly reconstructed. Since the complex-conjugate-free OCT image is obtained by doing just one Fourier transform on the complex interferogram, obtaining the full-range image is simple in algorithm and effective in computation time. Some full-range images of biological samples created with the proposed method are presented and the processing time is analyzed.