Textural Analysis Based Classification of Digital X-ray Images for Dental Caries Diagnosis

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Geetha V 1,* Aprameya K. S 1

1. Department of Electronics and Communication Engineering, University BDT College of Engineering, Davanagere – 577004, Karnataka, India.

* Corresponding author.

DOI: https://doi.org/10.5815/ijem.2019.03.04

Received: 13 Jan. 2019 / Revised: 28 Feb. 2019 / Accepted: 25 Apr. 2019 / Published: 8 May 2019

Index Terms

Dental radiography, computer aided diagnosis, dental caries, textural analysis


In this paper, we propose a suitable textural feature for diagnosis of dental caries in digital radiographs. The dental diagnosis system consists of Laplacian filter for image sharpening, adaptive threshold and morphological operations for segmentation, and support vector machine (SVM) as a classifier. In segmented image, textural features are extracted, and applied to the classifier, to classify the image as caries or normal. Experimental results indicate that GLCM (Grey Level Co-occurrence Matrix) and GLDM (Grey Level Difference Method) textural features are giving better performance measures as compared to other types of textural features with an accuracy of 96.88%, sensitivity of 1, specificity of 0.8667 and precision of 96.08%. The data were analyzed by Analysis of Variance (ANOVA), at a significant level of 5%. This result indicates that the interaction of feature extraction methods on performance measures are significant. Hence, GLCM or GLDM features provide reliable decision support for dental caries diagnosis.

Cite This Paper

Geetha V, Aprameya K. S,"Textural Analysis Based Classification of Digital X-ray Images for Dental Caries Diagnosis", International Journal of Engineering and Manufacturing(IJEM), Vol.9, No.3, pp.44-54, 2019. DOI: 10.5815/ijem.2019.03.04


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