Wavelet Transform Based Image Registration and Image Fusion

Image Registration is a fundamental task in image processing used to match two or more pictures taken, for example, at different times, from different sensors, or from different viewpoints. Image registration is particularly difficult when images are obtained through different sensor, (multi-modal registration). Mutual Information can be used for multi modal image registration. But this method has its own limitations one of it is of speed, method is very slow hence when time is an important constraint one cannot use this method. In this paper an attempt has been made to overcome this limitation.