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Proceedings Paper

Memory-efficient 3D multi-resolution image enhancement and processing to increase throughput
Author(s): Rob Albers; Eric Suijs; Peter H. N. de With
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Paper Abstract

Advanced signal processing such as multi-resolution decomposition and three-dimensional processing and data sets are gradually becoming a integral part of medical imaging. With the growing number of signal dimensions, the bandwidth requirements increase exponentially. Because memory bandwidth is a scarce parameter, this paper focusses on bandwidth optimization at the processor-chip level within multiprocessor systems. We introduce a practical model including formulas for the computing, memory and cache read/write procedures to optimize the mapping of data into the memory and cache for different configurations. A substantial performance improvement is realized by a new memory-communication model that incorporates the data-dependencies of the image-processing functions. More specifically, bandwidth optimization and minimization is achieved by implementing two measures: (1) breaking down the algorithm such that the processing gets a locality that fits with the cache size of the processor, and (2) a technique known from based on addressing and organizing the data prior to processing in such a way that memory traffic is minimized. For the experiments, we have concentrated particularly on image enhancement and noise reduction build around image pyramids for 3D X-ray data sets. First experimental results show a bandwidth reduction in the order of 80% and a throughput increase of 60% compared to straightforward implementations.

Paper Details

Date Published: 17 March 2008
PDF: 10 pages
Proc. SPIE 6918, Medical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling, 69182Y (17 March 2008); doi: 10.1117/12.769372
Show Author Affiliations
Rob Albers, Eindhoven Univ. of Technology (Netherlands)
Philips Medical Systems (Netherlands)
Eric Suijs, Philips Medical Systems (Netherlands)
Peter H. N. de With, Eindhoven Univ. of Technology (Netherlands)
LogicaCMG Nederland B.V. (Netherlands)


Published in SPIE Proceedings Vol. 6918:
Medical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling
Michael I. Miga; Kevin Robert Cleary, Editor(s)

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