| 題名: | Resolution enhancement of spectrum normalization in synthetic aperture digital holographic microscopy |
| 作者: | Lai, Xin-Ji
Tu, Han-Yen
Wu, Chung-Hsin
Lin, Yu-Chih
Cheng, Chau-Jern |
| 貢獻者: | Dept Elect Engn |
| 關鍵詞: | LENSLESS FOURIER HOLOGRAPHY
OFF-AXIS HOLOGRAMS
COMPLEX FIELDS
IMAGING METHOD
SUPERRESOLUTION |
| 日期: | 2015-01 |
| 上傳時間: | 2015-11-03 16:56:39 (UTC+8) |
| 摘要: | This study describes the overlapping of spatial frequency bands for synthetic aperture in digital holography using spectrum normalization to effectively enhance the spatial resolutions of image reconstruction. Synthesized spectrum swelling induced by excessive frequency overlaps can be normalized through the inverse apodization of an adjustable window function, which is similar to the effects of suppressing low-frequency expansion and strengthening high-frequency components of the reconstructed images. The results indicated that using the normalized spectrum synthesis that requires only a few frequency bands effectively enhances the spatial resolution and phase sensitivity of reconstructed images in digital holographic microscopy. (C) 2014 Optical Society of America |
| 關聯: | APPLIED OPTICS 卷: 54 期: 1 頁碼: A51-A58 |
| 顯示於類別: | [電機工程系] 期刊論文
|
