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

Claim 1:
2. The image processing device according to claim 1,
wherein the input unit is configured to input 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,
wherein the subject region extraction unit is configured to generate 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 and is configured to generate 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, and wherein the subject region extraction unit is configured to calculate 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, determine 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 extract the subject region from the second extended image.