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Scientific article
English

SimMap: Similarity maps for scale invariant local shape descriptors

Published inNeurocomputing, vol. 175, no. Part B, p. 888-898
Publication date2016
Abstract

Traditional approaches to estimate a scale invariant spatial scope for local image descriptors, a.k.a. characteristic scale, work well for intensity images. However, they fail when it comes to deal with binary images. We address this problem and propose a new method to estimate the characteristic scale of local shape descriptors. The proposed method extends the use of the distance map transform to produce similarity maps that approximate local intensity changes in binary images. We first validated our method evaluating the consistency of characteristic scales estimated across scaled instances of images; and then by comparing its performance, with respect to traditional methods, in the tasks of Content-Based Image Retrieval and shape detection in different datasets of binary images (shapes of Maya and Chinese hieroglyphs, and generic shapes). As shown by our results, the proposed similarity map produces characteristic scales that are more robust to scale variations, and leads to competitive results.

Keywords
  • Binary images
  • Local shape descriptors
  • Shape context
  • Characteristic scale
  • Similarity map
  • Shape detection
Citation (ISO format)
ROMAN RANGEL, Edgar Francisco, WANG, Changhu, MARCHAND-MAILLET, Stéphane. SimMap: Similarity maps for scale invariant local shape descriptors. In: Neurocomputing, 2016, vol. 175, p. 888–898. doi: 10.1016/j.neucom.2015.06.093
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ISSN of the journal0925-2312
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Technical informations

Creation10/07/2016 4:18:00 PM
First validation10/07/2016 4:18:00 PM
Update time03/15/2023 12:48:52 AM
Status update03/15/2023 12:48:52 AM
Last indexation01/16/2024 9:58:13 PM
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