Image query method and image query equipment

The invention provides an image query method to query a library image similar to an input image in an image library. The method includes the step of extracting key points and a profile, namely extracting the key points and the profile aimed at a plurality of library images in the image library and the input image, the step of extracting characteristics, namely extracting point characteristics based on the key points and extracting profile characteristics based on the profile aimed at the library images and the input image, the step of confirming combined characteristics, namely confirming the combined characteristics of the profile based on the point characteristics of the key points and the profile aimed at library images and the input image, the step of confirming image similarity, namely confirming the image similarity between the input image and the library images according to the profile characteristics, the combined characteristics and the positions of the key points of the profile of the input image and the profile characteristics, the combined characteristics and the positions of the key points of the profiles of the library images, and the step of sequencing, namely sequencing the library images according to the image similarity of the library images and the input image. The invention further provides image query equipment.