NDLI: An architecture for calculation of the distance transform based on Mathematical Morphology

Content Provider	IEEE Xplore Digital Library
Author	Hedberg, H. Owall, V.
Copyright Year	2009
Description	Author affiliation: Dept. of Electrical and Information Technology, Box 118, Lund University, SE-221 00, Sweden (Owall, V.) \|\| Prevas AB, Box 6090, SE-171 06 Solna, Sweden (Hedberg, H.)
Abstract	This paper presents a hardware architecture for calculating the city-block and chessboard distance transform on binary images. It is based on applying multiple morphological erosions and adding the result, enabling both processing pixels in raster scan order and a deterministic execution time. Which distance metric to be calculated is determined by the shape of the structuring element, i.e. diamonds for the city-block and squares for the chessboard. These properties together with a low memory requirement make the architecture applicable in any streaming data real-time embedded system environment with hard timing constraints, e.g. set by the frame rate. Depending on the application, a priori knowledge of the maximum size of the clusters may be used to reduce execution time and memory requirement even further. The architecture has been implemented for both FPGA and ASIC in an embedded system environment with an image resolution of 320 × 240 at a frame rate of 25 fps, running at 100 MHz and 454 MHz, respectively.
Starting Page	1
Ending Page	4
File Size	266882
Page Count	4
File Format	PDF
ISBN	9781424443109
e-ISBN	9781424443116
DOI	10.1109/NORCHP.2009.5397819
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-16
Publisher Place	Norway
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Real time systems Image segmentation Shape Image processing Embedded system Morphology Clustering algorithms Hardware Information technology Pixel
Content Type	Text
Resource Type	Article

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