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Development and simulation of soft morphological operators for a field programmable gate array

[+] Author Affiliations
Andrew J. Tickle

Coventry University, Department of Aerospace, Electrical, and Electronic Engineering, Priory Street Coventry CV1 5FB, United Kingdom

Paul K. Harvey

University of Liverpool, School of Electrical Engineering, Electronics, and Computer Science, Brownlow Hill Liverpool L69 3GJ, United Kingdom

Jeremy S. Smith

University of Liverpool, School of Electrical Engineering, Electronics, and Computer Science, Brownlow Hill Liverpool L69 3GJ, United Kingdom

Q. Henry Wu

University of Liverpool, School of Electrical Engineering, Electronics, and Computer Science, Brownlow Hill Liverpool L69 3GJ, United Kingdom

J. Electron. Imaging. 22(2), 023034 (Jun 25, 2013). doi:10.1117/1.JEI.22.2.023034
History: Received August 22, 2010; Revised August 6, 2012; Accepted April 29, 2013
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Abstract.  In image processing applications, soft mathematical morphology (MM) can be employed for both binary and grayscale systems and is derived from set theory. Soft MM techniques have improved behavior over standard morphological operations in noisy environments, as they can preserve small details within an image. This makes them suitable for use in image processing applications on portable field programmable gate arrays for tasks such as robotics and security. We explain how the systems were developed using Altera’s DSP Builder in order to provide optimized code for the many different devices currently on the market. Also included is how the circuits can be inserted and combined with previously developed work in order to increase their functionality. The testing procedures involved loading different images into these systems and analyzing the outputs against matlab-generated validation images. A set of soft morphological operations are described, which can then be applied to various tasks and easily modified in size via altering the line buffer settings inside the system to accommodate a range of image attributes ranging from image sizes such as 320×240pixels for basic webcam imagery up to high quality 4000×4000pixel images for military applications.

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Citation

Andrew J. Tickle ; Paul K. Harvey ; Jeremy S. Smith and Q. Henry Wu
"Development and simulation of soft morphological operators for a field programmable gate array", J. Electron. Imaging. 22(2), 023034 (Jun 25, 2013). ; http://dx.doi.org/10.1117/1.JEI.22.2.023034


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