MRI Segmentation through Wavelets and Fuzzy C-Means

Abstract

Segmentation of images, obtained by Magnetic Resonance Imaging (MRI), is a difficult task due to the inherent noise and inhomogeneity. This paper presents a technique to segment MRI images that is robust against noise. Discrete Wavelet Transform (DWT) is applied to MRI image to extract high level details and after some processing on this high pass image, we add it to the original image to get a sharpened image. The processing includes the Fuzzy C-means (FCM) segmentation algorithmapplied to the wavelet transformed image and Kirch's line/edge detection mask, to further enhance the edge detail in the image. The noise-robust nature of wavelets and the noise-sensitivity of FCM combine in our method to give better accuracy results.