Title :
Behavioral simulation results of the optical flow estimation algorithm for CADSP system design
Author :
Lee, Teahyung ; Anderson, David V.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
This paper presents the behavioral simulation results of an optical flow estimation (OFE) algorithm, the Lukas-Kanade (LK) method, for a cooperative analog/digital signal processing (CADSP) system design. First, performance tests are executed considering the limited-bit resolution of analog circuitry. To incorporate general analog circuit noise, OFE is evaluated with additive Gaussian noise. Finally, OFE that depends on noise from the CMOS image sensor is presented. Bit-level simulations show that different reduced-bit resolutions for each dimension in smoothing can make OFE very little affected. The experimental results can provide a guideline for system specification of CADSP system design or the efficient implementation of an OFE algorithm using reduced precision arithmetic.
Keywords :
AWGN; CMOS image sensors; band-pass filters; circuit noise; gradient methods; image resolution; image sequences; low-pass filters; CMOS image sensors; additive Gaussian noise; analog circuitry; behavioral simulation results; circuit noise; optical flow estimation algorithm; precision arithmetic reduction; Additive noise; Circuit simulation; Circuit testing; Gaussian noise; Image motion analysis; Optical noise; Optical sensors; Optical signal processing; Signal processing algorithms; Signal resolution;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399457
