Different-source image matching method and system based on local feature consistency

The invention discloses a different-source image matching method and system based on local feature consistency, belongs to the technical field of image processing and remote sensing image analysis, and solves the problems of low precision and efficiency of different-source image matching in the prior art. The method comprises the following steps: extracting key points of different-source images based on a local information feature extraction method; extracting phase information of the different-source images, and establishing local phase feature descriptors of the different-source images based on key points of the different-source images and local information of neighborhoods of the key points; based on the key points of the different-source images and the phase feature descriptors of the key points, filtering the key points by using a mean shift algorithm, and eliminating repeated modes in the key points; based on the key points and the feature descriptors of the two to-be-matched different-source images aft