Title :
Phase-based passive stereovision systems dedicated to cortical visual stimulators
Author :
Hawi, Firas ; Sawan, Mohamad
Author_Institution :
Dept. of Electr. Eng., Polystim Neurotechnologies Lab., Montreal, QC, Canada
fDate :
Sept. 30 2012-Oct. 3 2012
Abstract :
In this paper, we design, evaluate and compare two phase-based passive stereovision architectures. We present two approaches to implement phase-based correspondence search algorithms in real-time for sparse stereovision applications. The first approach enhances the accuracy of the 1D phase correlation method. The second approach optimizes the 2D phase correlation method at the cost of degradation in disparity estimation accuracy. We report experimental results that encourage the use of the proposed systems in a 3D imaging device dedicated to cover vision for blinds through cortical visual stimulation. FPGA implementation running at 200 fps is described.
Keywords :
computer vision; field programmable gate arrays; handicapped aids; neurophysiology; stereo image processing; vision defects; visual perception; 1D phase correlation method; 2D phase correlation method; 3D imaging device; FPGA; blind; cortical visual stimulation; cortical visual stimulator; degradation cost; disparity estimation accuracy; phase-based correspondence search algorithm; phase-based passive stereovision architecture; phase-based passive stereovision system; sparse stereovision application; Accuracy; Correlation; Estimation; Field programmable gate arrays; Image color analysis; Real-time systems; Visualization; 3D imaging; Computer Vision; Real-Time Systems; Signal Processing; Stereo;
Conference_Titel :
Computer Design (ICCD), 2012 IEEE 30th International Conference on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-3051-0
DOI :
10.1109/ICCD.2012.6378649