Overview of Remote Sensing Image Registration Methods

Image registration is one of the image processing technologies developed rapidly in recent years.It is an essential step in the fields of image fusion,image mosaic,and super-resolution image processing etc.The new automatic registration technologies for remote sensing images are summarized. Those technologies are divided into three categories:gray level-based regional registration,image feature-based registration,and image understanding and explanation-based registration.Their principles and registration performance are analyzed and their advantages and disadvantages are pointed out finally.