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http://dx.doi.org/10.5391/JKIIS.2015.25.2.133

A Performance Improvement of GLCM Based on Nonuniform Quantization Method  

Cho, Yong-Hyun (School of Information Technology Eng., Catholic Univ. of Daegu)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.25, no.2, 2015 , pp. 133-138 More about this Journal
Abstract
This paper presents a performance improvement of gray level co-occurrence matrix(GLCM) based on the nonuniform quantization, which is generally used to analyze the texture of images. The nonuniform quantization is given by Lloyd algorithm of recursive technique by minimizing the mean square error. The nonlinear intensity levels by performing nonuniformly the quantization of image have been used to decrease the dimension of GLCM, that is applied to reduce the computation loads as a results of generating the GLCM and calculating the texture parameters by using GLCM. The proposed method has been applied to 30 images of $120{\times}120$ pixels with 256-gray level for analyzing the texture by calculating the 6 parameters, such as angular second moment, contrast, variance, entropy, correlation, inverse difference moment. The experimental results show that the proposed method has a superior computation time and memory to the conventional 256-level GLCM method without performing the quantization. Especially, 16-gray level by using the nonuniform quantization has the superior performance for analyzing textures to another levels of 48, 32, 12, and 8 levels.
Keywords
Nonuniform Quantization; Lloyd Algorithm; Gray Level Co-occurrence Matrix(GLCM); Texture Analysis; Image Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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