Unmanned aerial vehicle visual image feature rapid matching and extracting method and device

The invention discloses an unmanned aerial vehicle visual image feature rapid matching and extracting method and device. The unmanned aerial vehicle visual image feature rapid matching and extractingmethod comprises the following steps: firstly, dividing two images acquired by an unmanned aerial vehicle to obtain an overlapping region of the two images and features in the overlapping region of the first image; secondly, mapping the features in the overlapping region of the first image to a second image through a coordinate transformation equation to obtain a plurality of mapping points; taking each mapping point as an initial search coordinate, carrying out local neighborhood search in the second image, and searching a pixel point with the highest similarity with the corresponding featurein the first image as a feature point and a matching point of the second image; and finally, carrying out conventional feature extraction in a non-overlapping region of the second image, and formingall features of the second