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.
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