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Periodicity and Texel Size Estimation of Visual Texture Using Entropy Cues

Keywords: image processing, texture, size and shape, texture periodicity, entropy.

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Abstract:

texture periodicity and texture element (texel) size are important characteristics for texture recognition and discrimination. in this paper, an approach to determine both, texture periodicity and texel size, is proposed. our method is based on the entropy, a texture measure computed from the sum and difference histograms. the entropy value is sensitive to the parameters in such histograms and takes its lowest value when the parameters match with texel size or its integer multiples, in any specific direction. we show the performance of our method by texture synthesis, tiling a sample of the detected size and measuring the similarity between the original image and the synthesized one, showing good results with regular textures and texels with different shapes, being useful for practical applications as well because of its simple implementation.

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