Patent ID: 11967121
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A difference detection device comprising:
a processor;
a storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
based on association among a first image and a second image captured at different times and illustrating a substantially identical space and encoding information of each of the first image and the second image, detect difference between a third image and a fourth image captured at different times and illustrating a substantially identical space,
wherein the encoding information is information acquired from data including the first image encoded and data including the second image encoded, before inverse transform processing is executed in decoding processing executed on each of the first image and the second image; and

a transform unit configured to transform the encoding information into an image format,
wherein the computer program instructions further perform to detect the difference between the third image and the fourth image based on the encoding information transformed into the image format.