ON THE LOCALIZATION PERFORMANCE-MEASURE AND OPTIMAL EDGE-DETECTION

In a recent paper, Tagare and deFigueiredo present a localization performance measure for edge detectors. They correctly point out a flaw in,Canny's formulation of the localization criterion, which was subsequently adopted by Sarkar and Boyer. They motivate their form of the localization criterion along a different line of reasoning. In this comment, ae show that although Canny's derivation was in error, the final form of his criterion is adequate and can, in fact, be derived from Tagare and deFigueiredo's formulation of the problem. We also point out some problems with Tagare and deFigueiredo's localization criterion.