Visibility based multi modal medical image fusion with DWT

Image fusion has one of the applications in Digital image processing. Image fusion is applicable in different domains like Medical, Satellite, military, Multi focus etc. In this paper, the proposed work based on Discrete Wavelet Transform (DWT) and visibility. The first step of proposed work is apply one level DWT on Gray level MRI image & color information of intensity component of PET image to get four coefficients (approximation, vertical, horizontal & diagonal). Based on comparison visibility condition of 8*8 window size of both image coefficients to obtain new four coefficients. Finally, to obtain fused image after applying Inverse Discrete Wavelet Transform (IDWT). This proposed work gives good result & also improve the resolution of the image for better visual perception with respect to PSNR, MSE, Cross correlation, Mean, Standard Deviation, Entropy values.