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1 November 2011 Dedicated hardware processor and corresponding system-on-chip design for real-time laser speckle imaging
Chao Jiang, Hongyan Zhang, Jia Wang, Yaru Wang, Heng He, Rui Liu, Fangyuan Zhou, Jialiang Deng, Pengcheng Li, Qingming Luo
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Journal of Biomedical Optics, Vol. 16, Issue 11, 116008 (November 2011). https://doi.org/10.1117/1.3651772
Abstract
Laser speckle imaging (LSI) is a noninvasive and full-field optical imaging technique which produces two-dimensional blood flow maps of tissues from the raw laser speckle images captured by a CCD camera without scanning. We present a hardware-friendly algorithm for the real-time processing of laser speckle imaging. The algorithm is developed and optimized specifically for LSI processing in the field programmable gate array (FPGA). Based on this algorithm, we designed a dedicated hardware processor for real-time LSI in FPGA. The pipeline processing scheme and parallel computing architecture are introduced into the design of this LSI hardware processor. When the LSI hardware processor is implemented in the FPGA running at the maximum frequency of 130 MHz, up to 85 raw images with the resolution of 640×480 pixels can be processed per second. Meanwhile, we also present a system on chip (SOC) solution for LSI processing by integrating the CCD controller, memory controller, LSI hardware processor, and LCD display controller into a single FPGA chip. This SOC solution also can be used to produce an application specific integrated circuit for LSI processing.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE) 1083-3668/2011/16(11)/116008/10/$25.00
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Chao Jiang, Hongyan Zhang, Jia Wang, Yaru Wang, Heng He, Rui Liu, Fangyuan Zhou, Jialiang Deng, Pengcheng Li, and Qingming Luo "Dedicated hardware processor and corresponding system-on-chip design for real-time laser speckle imaging," Journal of Biomedical Optics 16(11), 116008 (1 November 2011). https://doi.org/10.1117/1.3651772
Published: 1 November 2011
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Cited by 9 scholarly publications.
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KEYWORDS
Field programmable gate arrays
Image processing
LCDs
Video
Blood circulation
CCD cameras
Control systems
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