8 September 2011 Correlation recognition device based on spatial light modulator for infrared imaging system
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Abstract
In some special circumstances, some dynamic infrared target need to be detected and identificated on the static background, This paper presents a correlation identification device based on spatial light modulator for infrared imaging system, a 4F Fourier transform system added to infrared imaging system, The images captured by infrared camera is loaded onto the input plane of 4Fsystem in real time using spatial light modulator, After a Fourier transform lens and the digital image transform of its spectrum pattern, in this spectrum plane a special device is placed, and the device is pre-proseecing through the background of the target then made into the matched filter, Thus, once again through another Fourier transform lens to do the inverse Fourier transform, When there is a specific dynamic infrared target in the background, the image loaded on the spatial light modulator will be different, the output plane will produce significantly different output signal, Thus, in a very short period of time to complete the dynamic target recognition. This design can transformed infrared image into coherent lignt information processing, it can improve recognition speed and reduce the identification error, to do parallel multi-channel target recognition.
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Ye Wang, Ye Wang, "Correlation recognition device based on spatial light modulator for infrared imaging system", Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 81931K (8 September 2011); doi: 10.1117/12.900133; https://doi.org/10.1117/12.900133
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