Object region tracking device and the object region tracking method

摘要

PROBLEM TO BE SOLVED: To obtain the object area racking system that stably extracts an image area of a tracked object against a size change of the object in the image by utilizing it that the object moves on a plane fixed to a camera in the case of tracking the object through the use of a reference image segmented from the image. SOLUTION: A collation processing control section 13 allows an image size conversion section 14 to estimate a proper image size of a reference image at a collation position based on a past image or more and information related to the image stored in a passage information storage section 16, based on the assumption that a tracked object moves on a plane fixed to an installed camera, in the case of allowing an image collation section 15 to process the collation of an image entered by an image entry section 11 and stored in an input image storage section 12 with the reference image to extract a photographed area of the tracked object. The control section 13 allows the conversion section 14 to convert the size of the reference image into the estimated size. Thus, the collation of the image collation section 15 copes with a change in the size of the tracked object in its image.