MRI scanning has shown significant growth in the detection of brain tumors in the recent decade among various methods such as MRA, X-ray, CT, PET, SPECT, etc. Brain tumor identification requires high exactness because a minor error can be life-threatening. Brain tumor disclosure remains a challenging job in medical image processing. This paper targets to explicate a method that is more precise and accurate in brain tumor detection and focuses on tumors in neonatal brains. The infant brain varies from the adult brain in some aspects, and proper preprocessing technique proves to be fruitful to avoid miscues in results. This paper is divided into two parts: In the first half, preprocessing was accomplished using HE, CLAHE, and BPDFHE enhancement techniques. An analysis is the sequel to the above methods to check for the best method based on performance metrics, i.e., MSE, PSNR, RMSE, and AMBE. The second half deals with the segmentation process. We propose a novel ARKFCM to use for segmentation. Finally, the trends in the performance metrics (dice similarity and Jaccard similarity) as well as the segmentation results are discussed in comparison with the conventional FCM method.
Image processing plays a crucial role in obtaining information from brain images. Magnetic Resonance Imaging (MRI) techniques provide precious information to the doctors to diagnose various diseases. Artifact removal, skull stripping, Noise removal and enhancement are various procedures in pre-processing of the image. Easy detection of the tumor requires a preprocessed image. We propose analysis of three methods on astrocytoma MRI brain images called Histogram Equalization (HE), Contrast Limited Adaptive Histogram Equalization (CLAHE), Brightness Preserving Dynamic Fuzzy Histogram Equalization (BPDFHE). These methods are verified and the results are evaluated using performance metrices. (MSE, PSNR, RMSE).
22 March 2018 in International Journal of Imaging Systems and Technology