| 摘要 |
<p>PROBLEM TO BE SOLVED: To identify, by black and white, only the portion of a suspicious person having entering some place during night, while keeping the color of a scene under visible light seen by people ordinarily.SOLUTION: A camera 1 comprises: a visible light photographing unit 110 for photographing a visible light image by color; a storage unit 120 for storing the visible light image; an invisible light photographing unit 130 for photographing an invisible light image of a field angle nearly equal to that of the visible light image; a difference extraction unit 140 for extracting as a difference area a portion having varied in the invisible light image with respect to the visible light image stored in the storage unit 120; and an image processor 150 which, when there is the difference area, outputs a synthetic image obtained by synthesizing the difference area of the invisible light image and the difference area of the visible light image stored in the storage unit.</p> |
