Share Email Print
cover

Proceedings Paper

Pixel super-resolution in digital in-line holography
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report a new holographic microscope using pixel super-resolution algorithm. In our method, a sequence of low resolution images are acquired by a complementary metal oxide semiconductor (CMOS) sensor in digital inline holography system and the resolution is limited by the sensor pixel size. Then the super-resolution algorithm is applied to the low resolution images to get the image with much higher resolution that beyond the Nyquist criteria. We perform both numerical simulation and experiments to demonstrate our method with US Air Force Target used as the sample. The sample is randomly moved in the sample plane and a set of holograms are captured by the camera in inline holographic system. We use two methods to reconstruct the sample image. In the first method, super-resolution algorithm is applied with the low resolution holograms to get the high resolution hologram. Then the high resolution hologram is reconstructed using auto-focusing algorithm to get the high resolution sample image. In the second method, the raw holograms are directly reconstructed to get a set of low resolution sample images, then the super-resolution algorithm is applied to get the high resolution sample image. We observed that the above mentioned two methods can get similar results in both numerical stimulation and experiments. We believe that the combination of pixel super-resolution algorithm and digital in-line holography can be very useful to implement a compact low-cost microscope with high resolution.

Paper Details

Date Published: 31 October 2016
PDF: 6 pages
Proc. SPIE 10022, Holography, Diffractive Optics, and Applications VII, 100220A (31 October 2016); doi: 10.1117/12.2245969
Show Author Affiliations
Mingjun Wang, Univ. of Michigan (United States)
Shanghai Jiao Tong Univ. (China)
Shaodong Feng, Univ. of Michigan (United States)
Shanghai Jiao Tong Univ. (China)
Jigang Wu, Univ. of Michigan (United States)
Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 10022:
Holography, Diffractive Optics, and Applications VII
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

© SPIE. Terms of Use
Back to Top