Patent ID: 11881005
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 8:
9. The image processing method according to claim 7, further comprising:
inputting a first visible light image of only the background in which the subject is not included and a second visible light image which is captured at the same timing as the second invisible light image and in which the subject and the background are included;
generating a first extended image that includes pixel values of n+1 dimensions in which pixel values of n dimensions of the first visible light image and a pixel value of one dimension of the first invisible light image are integrated;
generating a second extended image that includes pixel values of n+1 dimensions in which pixel values of n dimensions of the second visible light image and a pixel value of one dimension of the second invisible light image are integrated;
calculating a difference between a pixel value of each pixel of the second extended image and a pixel value of a pixel at a corresponding position of the first extended image;
determining whether the pixel is in the subject region or the background region in accordance with whether the difference is equal to or greater than the predetermined threshold; and
extracting the subject region from the second extended image.