Patent ID: 8169496
Filing Date: 2012-05-01
Classification: H04N

Abstract:
1. An image processing system comprising: a timing signal generation unit configured to generate a timing signal; a first illumination unit configured to emit light based on the timing signal; an illumination control unit configured to adjust the light emitted from the first illumination unit so as to illuminate a limited area in a space; a first capture unit configured to capture a first image of an imaging area including the limited area or part of the limited area based on the timing signal, the first image being taken from a position different from a position of the first illumination unit when the first illumination unit emits light; a second capture unit configured to capture a second image of the imaging area based on the timing signal, the second image being taken from the position when the first illumination unit emits no light; a difference image acquisition unit configured to acquire a third image which is a difference image between the first image and the second image; an area of interest setting unit configured to set an area of interest in one of the first image and the second image; and an image processing unit configured to extract an image inside the area of interest from the third image, use the extracted image as a mask, and extract the mask from the second image.