Patent ID: 8923623
Filing Date: 2014-12-30
Classification: G06K

Abstract:
1. A method for acquiring descriptive information of a plurality of images, comprising: performing a feature point detection with respect to each image of the plurality of images, so as to obtain a plurality of feature points of each image; acquiring 0-level descriptive information of the plurality of images, wherein the 0-level descriptive information of each image of the plurality of images is generated in accordance with a plurality of first local feature descriptors for the image and a plurality of first visual words, wherein the plurality of first local feature descriptors are obtained on the basis of the plurality of feature points of the image and the plurality of first visual words are obtained on the basis of the plurality of first local feature descriptors for the plurality of images; and acquiring (n−1)-level descriptive information of the plurality of images, wherein the following are performed for each image: wherein the nth visual words are different from the (n−1)th visual words, where n=2,3, . . . , K+1, and K is a positive integer.