| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving object detector capable of detecting the presence of a plurality of moving objects even when occlusion occurs. SOLUTION: A moving object detector comprises at least: an imaging part that takes an image of a monitored area; an illumination part that is installed so as to illuminate the monitored area with an optical axis different from the visual axis of the imaging part; an image processing part that detects a moving object from the image taken by the imaging part; and an output part. The image processing part comprises: changed-area extraction means that extracts a changed area from a reference image by comparing the reference image and an input image obtained by the imaging part photographing the monitoring area illuminated by the illumination part; dividing means that divides the changed area into a moving object image and a shadow image by using characteristics of the changed area; and determining means that determines whether the shadow is caused by a plurality of moving objects by using the characteristics of the shadow image and outputs a result of determination to the output part. COPYRIGHT: (C)2012,JPO&INPIT |
