A gradient coprocessor of optical flow: A hardware co-simulation using FPGA based on MAC-DA

Rustam, R. and Hamid, N.H. and Hussin, F.A. (2011) A gradient coprocessor of optical flow: A hardware co-simulation using FPGA based on MAC-DA. In: UNSPECIFIED.

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Abstract

Optical flow is one of the tools for video content analysis (VCA). The optical flow involves a gradient coprocessor as preprocessing to estimate partial derivative. The gradient processor consists of kernels (masks) to convolute each pixel of image sequences. In hardware implementation of the gradient into FPGA, a multiply accumulate (MAC) is an important technique that is useful for reducing the number of multipliers and adders in a convolution process. Finite impulse response (FIR) is one of methods usually used to implement MAC. The multiply accumulate based on FIR (MAC-FIR) still needs more resources and has less speed. In order to fulfill this lack, this paper presents an implementation of distributed arithmetic to MAC. Design and optimization of the multiply accumulate based on distributed arithmetic (MAC-DA) is illustrated in this paper. Comparisons in resources (area) and speeds between MAC-FIR and MAC-DA are also given. © 2011 IEEE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 0; Conference of 1st International Conference on Electrical, Control and Computer Engineering 2011, InECCE 2011 ; Conference Date: 21 June 2011 Through 22 June 2011; Conference Code:85983
Uncontrolled Keywords: Co-processors; Distributed arithmetic; Finite-impulse response; mulitply accumulate; Partial derivatives, Computer hardware; Computer simulation; Convolution; Filter banks; Hardware; Impulse response, Optical flows
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:50
Last Modified: 09 Nov 2023 15:50
URI: https://khub.utp.edu.my/scholars/id/eprint/1956

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