Title
Approximate stochastic computing (ASC) for image processing applications
Abstract
SC (stochastic computation) has been found to be very advantageous in image processing applications because of its lower area consumption and low-power operation. However, one of the major issues with the SC is its long run-time requirement for accurate results. In this paper, a new technique called the approximate stochastic computing (ASC) approach called the approximate stochastic computing (ASC) focusing on image processing applications is proposed to reduce the computation time of a SC by a factor of 16 at a trade-off of an error percentage of 3.13% in the absolute stochastic value ([0,1)) computed. The proposed technique considers only the first four MSBs of the image pixel value for SC, which introduce a maximum error of 6.25% in the stochastic output. Attempts have been made to reduce this error to 3.13% by linearly increasing the clock cycles from 16 to 17 rather than exponentially (ex: 32, 64,128,256...). Experimental results from SC edge detection circuit indicate that this technique is a promising approach for efficient approximate image processing.
Year
DOI
Venue
2016
10.1109/ISOCC.2016.7799758
2016 International SoC Design Conference (ISOCC)
Keywords
Field
DocType
SC edge detection circuit,clock cycles,stochastic output,maximum error,image pixel value,MSB,absolute stochastic value,computation time reduction,ASC approach,image processing applications,approximate stochastic computing
Computer science,Edge detection,Stochastic process,Image processing,Algorithm,Electronic engineering,Pixel,Stochastic computing,Grayscale,Computation,Exponential growth
Conference
ISSN
ISBN
Citations 
2163-9612
978-1-5090-3220-4
0
PageRank 
References 
Authors
0.34
7
5
Name
Order
Citations
PageRank
Ramu Seva101.69
Prashanthi Metku202.70
Kyung Ki Kim39921.62
Yong-Bin Kim4227.14
Minsu Choi515627.63