Pre-Processing and Image Enhancement Techniques

Abstract: This article deals with pre-processing and enhancement activities such as removal of film artifacts and labels, filtering the image. A gradient based image enhancement method for mammography and MRI images is based on the first derivative and the local statistics. The proposed mammogram image enhancement method, the film artifacts such as labels and X-ray marks are removed and the high frequency components are removed using various filtering. The performance of the proposed method is also evaluated by means of Signal-to Noise-Ratio (SNR) using the mammographic images from the Mammography Image Analysis Society database and MRI brain images obtained from KOVAI Medical Center Hospital (KMCH), India. Keywords: MIAS, MRI, Artifacts, Filter, PSNR, ASNR