Patent ID: 9076066
Filing Date: 2015-07-07
Classification: G06K

Abstract:
1. A computerized method for determining a similarity between a first image and a second image using an image processing device, the method comprising: converting the first image into a first grayscale image and the second image into a second grayscale image; extracting a first feature vector of the first grayscale image and a second feature vector of the second grayscale image, wherein the first feature vector comprises a set of first proportion values, each first proportion value of the first grayscale image is a ratio of a number of pixels having a grayscale value to a total number of pixels, the second feature vector comprises a set of second proportion values, and each second proportion value of the second grayscale image is a ratio of a number of pixels having a grayscale value to a total number of pixels, and extracting a first feature vector of the first grayscale image and a second feature vector of the second grayscale image comprises: dividing the first and second grayscale images into n grayscale histograms, and extracting a first feature vector V calculating a similarity value indicating the similarity between the first image and the second image according to the first feature vector and the second feature vector; and determining whether the first image is similar to the second image by comparing the similarity value with a predetermined threshold and outputting a determination result, wherein if the similarity value is greater than or equal to the predetermined threshold, the first image is similar to the second image and the outputted determination result denotes the first image is similar to the second image.