Fuzzy Index to Evaluate Edge Detection in Digital Images

Felicitas Perez-Ornelas, Olivia Mendoza, Patricia Melin, Juan R Castro, Antonio Rodriguez-Diaz and Oscar Castillo

PLOS ONE, 2015, vol. 10, issue 6, 1-19

Abstract: In literature, we can find different metrics to evaluate the detected edges in digital images, like Pratt's figure of merit (FOM), Jaccard’s index (JI) and Dice’s coefficient (DC). These metrics compare two images, the first one is the reference edges image, and the second one is the detected edges image. It is important to mention that all existing metrics must binarize images before their evaluation. Binarization step causes information to be lost because an incomplete image is being evaluated. In this paper, we propose a fuzzy index (FI) for edge evaluation that does not use a binarization step. In order to process all detected edges, images are represented in their fuzzy form and all calculations are made with fuzzy sets operators and fuzzy Euclidean distance between both images. Our proposed index is compared to the most used metrics using synthetic images, with good results.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0131161

DOI: 10.1371/journal.pone.0131161

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