Hugh In Hardware: Processors Get Algorithm-Specific

The architecture of the Histogram/Hough Transform Processor (HHP) from LSI Logic Corp. (Milpitas, California) consists of 2 banks of random access memory, one of which stores histograms, modified Hough transform results, and x, y pixel coordinates. The other bank stores the histogram equalization tr...

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Bibliographic Details
Published inESD Vol. 19; no. 2; p. 51
Main Authors Dolan, Simon, Sasena, Ed
Format Journal Article
LanguageEnglish
Published Boston Digital Design Publishing 01.02.1989
Subjects
Algorithms
Architecture
Integrated circuits
Microprocessors
Random access memory
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ISSN0893-2565

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Summary:The architecture of the Histogram/Hough Transform Processor (HHP) from LSI Logic Corp. (Milpitas, California) consists of 2 banks of random access memory, one of which stores histograms, modified Hough transform results, and x, y pixel coordinates. The other bank stores the histogram equalization transfer function, the modified Hough transform function, and pixel location storage tables. Also included in the HHP architecture are three 9-bit counters, location logic, adders, shifters, and control logic. Histogramming, modified Hough transforming, and pixel locating functions each use the HHP architecture in a unique manner. The Hough transform extracts actual information from an image, viewing the image as a set of parallel lines. Gray values are input to the HHP in raster-scanned order, and 4 different modified Hough transform equations provide a way to locate relatively straight edges placed at any angle within an image. The HHP's versatile design offers several solutions to a broad range of signal processing problems.
ISSN:0893-2565