Document Type: Research Articles
Department of Electronics and communication Engineering, Kongu Engineering College, Perundurai, Erode -638 060, Tamil Nadu, India.
Objective: Detection and classification of abnormalities in Magnetic Resonance (MR) brain images in medical field
is very much needed. The proposed brain tumor classiﬁcation system composed of denoising, feature extraction and
classiﬁcation. Noise is one of the major problems in the medical image and due to that retrieval of useful information
from the image is difficult. The proposed method for denoising an image is PURE-LET transform. Methods: This
method preserves the diagnostic property of the images. In feature extraction, combination of Modified Multi-Texton
Histogram (MMTH) and Multi-Texton Microstructure Descriptor (MTMD) is used and then Gray Level Co-occurrence
Matrix (GLCM) and Gray Level Run Length Matrix (GLRLM)are used to extract the feature from the image to
compare performance. In classification, classifiers like Support Vector Machine (SVM), K Nearest Neighbors (KNN)
and Extreme Learning Machine (ELM)are trained by the extracted features and are used to classify the images. Result:
The performance of feature extraction methods with three different classifiers are compared in terms of the performance
metrics like sensitivity, speciﬁcity, and accuracy. Conclusion: The result shows that the combination of MMTH and
MTMD with SVM shows the highest accuracy of 95%.