A Method for Contrast Correction and Enhancement for Medical Images Using Wavelet Fusion

There are some existing methods to enhance contrast restoration but do not provide considerable visibility enhancement. In this paper the contrast of the image is corrected and then enhanced. Initially estimating a measure of degradation and its removal is given and at last wavelet fusion method is used to enhance the image. Medical image processing has been investigated for more than three decades. It is clear that medical imaging will still play a very dominant role in clinical research as well as in the daily routine practice in the coming decade. For a number of reasons the images obtained by the medical instruments itself, such as CT, MRI, PET, SPECT etc. are insufficient for the efficient performance of a surgical intervention and various image processing techniques are necessary in order to make the most important features more easily visible to diagnose. In addition, contrast correction allows a doctor to observe functional abnormalities that are not visible on a regular scan. Owing to its rapidly increasing popularity over the last few decades, the wavelet transform has become a quite standard tool in numerous image research and its application domains.