Title :
Enhancing image objects resolution with Walsh-coded spatial light modulators embedded into Mach-Zehnder interferometry
Author :
Huang, Jen-Fa ; He, Yu-Chang
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In this paper, we use Mach-Zehnder interferometry (MZI) technique to enhance image objects resolution. We take sample´s correlation characteristics over Walsh-Hadamard (WH)-coded spatial-light modulator (SLM) to boost the image resolution of sample objects detection. Comparing the spectral interferences with and without WH-coded SLM, we get more contrast difference on the correlation magnitudes. Through with computer simulations, we find that the interference correlations under coded-SLM have a contrast ratio of 2.0 which is larger than the contrast ratio of 1.49 for sample measurement without SLM coding. The enhancement of image objects resolution is thus assured in the paper.
Keywords :
Hadamard codes; Mach-Zehnder interferometers; image coding; image enhancement; image resolution; light interference; object detection; spatial light modulators; MZI technique; Mach-Zehnder interferometry; WH-coded spatial-light modulator; Walsh-Hadamard coded spatial light modulators; coded-SLM; computer simulations; correlation magnitudes; image object resolution enhancement; interference correlations; sample object detection; spectral interferences; Correlation; Encoding; Fourier transforms; Interference; Modulation; Optical interferometry; Tomography; Interference correlations; Liquid crystal modulator (LCM); Mach-Zehnder interferometry (MZI); Spatial light modulator (SLM);
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2012 IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4673-2192-1
DOI :
10.1109/ICSPCC.2012.6335586
