Title :
A portable hardware implementation for temporal laser speckle imaging
Author :
Rege, Aunshul ; Tyler, Betty M. ; Brooke, M. Jason ; Murari, Kartikeya
Author_Institution :
Vasoptic Med., Vasoptic Med., Inc., Columbia, MD, USA
fDate :
Oct. 31 2013-Nov. 2 2013
Abstract :
We present a memory-optimized, portable hardware implementation for temporal laser speckle imaging (tLSI) consisting of a complementary metal oxide semiconductor (CMOS) image sensor, a field programmable gate array (FPGA) processor and a microSD card for storage. The system is compared to a typical benchtop setup consisting of a charge coupled device (CCD) based image sensor and a computer for imaging rat brain vasculature. The hardware implementation enables faster operation, reduced data bandwidth, lower power consumption, smaller footprint and comparable performance in terms of contrast to noise ratio and flow-fidelity. We expect these advantages to enable portable, point-of-care diagnostic imaging devices for high-resolution, high-contrast measurement of haemodynamic parameters.
Keywords :
CCD image sensors; CMOS image sensors; biomedical optical imaging; brain; field programmable gate arrays; laser applications in medicine; medical image processing; noise; speckle; CCD based image sensor; CMOS image sensor; FPGA processor; charge coupled device; complementary metal oxide semiconductor; contrast-noise ratio; data bandwidth reduction; field programmable gate array; flow fidelity; haemodynamic parameters; memory optimization; microSD card; point-of-care diagnostic imaging devices; portable hardware implementation; power consumption; rat brain vasculature imaging; temporal laser speckle imaging; Blood; CMOS integrated circuits; Field programmable gate arrays; Hardware; Imaging; Speckle; Standards;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2013 IEEE
Conference_Location :
Rotterdam
DOI :
10.1109/BioCAS.2013.6679636
