Design and implementation of the parallel processing system of multi-channel polarization images

Zhi-yong Li; Qin-chao Huang

doi:10.1117/12.2034785

21 August 2013 Design and implementation of the parallel processing system of multi-channel polarization images

Zhi-yong Li, Qin-chao Huang

Proceedings Volume 8908, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Sensors and Applications; 890825 (2013) https://doi.org/10.1117/12.2034785
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Compared with traditional optical intensity image processing, polarization images processing has two main problems. One is that the amount of data is larger. The other is that processing tasks is more complex. To resolve these problems, the parallel processing system of multi-channel polarization images is designed by the multi-DSP technique. It contains a communication control unit (CCU) and a data processing array (DPA). CCU controls communications inside and outside the system. Its logics are designed by a FPGA chip. DPA is made up of four Digital Signal Processor (DSP) chips, which are interlinked by the loose coupling method. DPA implements processing tasks including images registration and images synthesis by parallel processing methods. The polarization images parallel processing model is designed on multi levels including the system task, the algorithm and the operation. Its program is designed by the assemble language. While the polarization image resolution is 782x582 pixels, the pixel data length is 12 bits in the experiment. After it received 3 channels of polarization image simultaneously, this system implements parallel task to acquire the target polarization characteristics. Experimental results show that this system has good real-time and reliability. The processing time of images registration is 293.343ms while the registration accuracy achieves 0.5 pixel. The processing time of images synthesis is 3.199ms.

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Zhi-yong Li and Qin-chao Huang "Design and implementation of the parallel processing system of multi-channel polarization images", Proc. SPIE 8908, International Symposium on Photoelectronic Detection and Imaging 2013: Imaging Sensors and Applications, 890825 (21 August 2013); https://doi.org/10.1117/12.2034785

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KEYWORDS

Polarization

Image processing

Digital signal processing

Parallel processing

Image registration

Logic

Field programmable gate arrays

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