Image Registration is a process used in image processing to align two or more images of the same scene taken at different times, from different viewpoints, or by different sensors. The goal is to ensure that corresponding points in the images match up accurately, allowing for better analysis and comparison. This technique is widely used in various fields, including medical imaging, where it helps in aligning scans from different modalities like MRI and CT for improved diagnosis. It is also essential in remote sensing and computer vision, enabling the integration of data from multiple sources for enhanced interpretation.