Abstract

• Image enhancement aims to increase the visibility of original input images and to convert them into a better form with detail information. Images enhancement is a vital role in image processing because of the poor contrast depending on the nature of the images. In this research, a total of 100 test grayscale images which are normal and abnormal MRI brain (512×512) pixels images have been processed by using enhancement techniques. This research described the methods of enhancement of magnetic resonance imaging (MRI) brain images in spatial domain by using MATLAB. Image data used in this research were obtained from No (2) military hospital 500 bedded, Dagon Township, Yangon (Myanmar). The best technique to be applied for MRI brain images has been identified by comparing the result of peak signal to noise ratio (PSNR). Based on the result obtained, it has been confirmed that the combination of spatial filtering and histogram equalization technique is more suitable for enhancement of the MRI brain images.