Automatic Detection of Texture-defects using Texture-periodicity and Jensen-Shannon Divergence

V. Asha, N.U. Bhajantri and P. Nagabhushan
Volume: 8, No: 2, Page: 359 ~ 374, Year: 2012
10.3745/JIPS.2012.8.2.359
Keywords: Periodicity, Jensen-Shannon Divergence, Cluster, Defect
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Abstract
In this paper, we propose a new machine vision algorithm for automatic defect detection on patterned textures with the help of texture-periodicity and the Jensen- Shannon Divergence, which is a symmetrized and smoothed version of the Kullback- Leibler Divergence. Input defective images are split into several blocks of the same size as the size of the periodic unit of the image. Based on histograms of the periodic blocks, Jensen-Shannon Divergence measures are calculated for each periodic block with respect to itself and all other periodic blocks and a dissimilarity matrix is obtained. This dissimilarity matrix is utilized to get a matrix of true-metrics, which is later subjected to Ward"'"s hierarchical clustering to automatically identify defective and defect-free blocks. Results from experiments on real fabric images belonging to 3 major wallpaper groups, namely, pmm, p2, and p4m with defects, show that the proposed method is robust in finding fabric defects with a very high success rates without any human intervention

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Cite this article
IEEE Style
V. Asha and N. B. P. Nagabhushan, "Automatic Detection of Texture-defects using Texture-periodicity and Jensen-Shannon Divergence," Journal of Information Processing Systems, vol. 8, no. 2, pp. 359~374, 2012. DOI: 10.3745/JIPS.2012.8.2.359.

ACM Style
V. Asha, N.U. Bhajantri and P. Nagabhushan. 2012. Automatic Detection of Texture-defects using Texture-periodicity and Jensen-Shannon Divergence, Journal of Information Processing Systems, 8, 2, (2012), 359~374. DOI: 10.3745/JIPS.2012.8.2.359.