13 March 2006 Performance tuning of candidate determination methods for computer aided detection of colon polyps
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Abstract
We introduce an intuitive measure of computer aided detection (CAD) system performance that can handle simultaneous variation of multiple parameters. On the example of CAD of colon polyps we demonstrate how this measure was used to find the optimal parameters and make improvements to the "water-plane" algorithm that finds initial polyp candidates on the colon wall. In particular, we improved the merging of overlapping clusters to only create fused clusters if they shared at least 50% of their vertices and adjusted size and thickness filter criteria to retain more true positive detections. The system, containing all optimizations, improved significantly over the original system that found initial detections based only on colon surface curvature. This improvement was measured by both free response operating curve (FROC) analysis and our new performance measure.
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Ingmar Bitter, Matthew Kelsey, Ronald M. Summers, "Performance tuning of candidate determination methods for computer aided detection of colon polyps", Proc. SPIE 6143, Medical Imaging 2006: Physiology, Function, and Structure from Medical Images, 61431A (13 March 2006); doi: 10.1117/12.653755; https://doi.org/10.1117/12.653755
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