不同传感器或同一传感器在不同时间、不同地点获得的图像在空间上往往会存在差异。图像配准是图像融合的重要前提条件，配准精度的高低直接决定融合的重要前提条件，配准精度的高低直接决定融合结果的质量，图像配准是图像融合的关键技术之一。对不同的图像以及应用领域，适用的配准方法有可能有很大的差别，根据图像特点和应用角度找出适合的配准方法，是解决图像融合问题的关键。-Different sensors or the same sensor at different times, in different locations in space, the image obtained will often differ. Image registration is an important prerequisite for image fusion, registration accuracy directly determines the level of integration of an important prerequisite, registration accuracy directly determines the quality of the results fusion, image registration is one of the key technology of image fusion. Different images and application areas, the applicable registration methods may be very different, depending on the image characteristics and the application point of view to find the appropriate registration method is to solve the key problem of image fusion.