1. A method for registering and fusing time-varying image sources to provide highest possible information rendering to an operator, comprising the steps of: acquiring image data of an object of interest; first modeling rotation of said object of interest; second modeling time-changing dynamics of said object of interest using an affine transformation; mapping dynamics from said first and second modeling onto a difference image; comparing reference images with said difference image to determine if there is information or noise comprising the steps of: determining a probability density function and a likelihood ratio; weighing the difference image using a decision-making algorithm; fusing difference image found to be additional information with reference image to create a new said reference image; repeating steps of acquiring, first and second modeling, mapping, comparing and fusing until said difference image is found to be noise after several cycles; and providing last new said reference image to an operator as having a high information rendering.