IMAGE DIFFERENCE DETECTION METHOD, IMAGE DIFFERENCE DETECTION DEVICE AND IMAGE DIFFERENCE DETECTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a method, device and program for comparing a plurality of images and detecting a difference therebetween at high speed.SOLUTION: The present invention relates to an image difference detection method to be implemented by an image difference detection device 10 configured to detect a difference between at least two images using image encoding processing in which image encoding is performed. The image difference detection device comprises: an image input part 5 for inputting a first image and at least one second image; a detection target size input part 1 for inputting sizes of difference detection targets; an image analysis part 8 which implements analysis processing of the first image and the second image based on the sizes and outputs image analysis information; an encoding parameter determination part 2 which inputs the image analysis information and determines an encoding parameter; an encoding part 3 which uses the encoding parameter to encode the first image and the second image using image encoding processing therefor; and a change detection part 4 for detecting the presence/absence of a difference in the second image from the first image based on a result of comparison between a code amount of the first image and a code amount of the second image.SELECTED DRAWING: Figure 8