| 摘要 |
PROBLEM TO BE SOLVED: To correct the focal distance of the lens of an image pickup part and the deviation of angles in a vertical direction and a horizontal direction with high accuracy, in an image monitoring device using a zoom swivel camera for the image pickup part. SOLUTION: Three or more reference points are arbitrarily set in a video obtained by an image pickup part 1, and coordinates at the time of setting the reference points are stored in a reference point storage part 4. Then, coordinates of the reference points in the current video are acquired from the video including the reference points acquired by the image pickup part 1 by a reference point acquisition part 5. A reference point comparison part 6 compares the coordinates of the reference points in the current video with the coordinates at the time of setting the reference points, and determines whether or not there is a predetermined amount or more of difference. When determining that there is a predetermined amount or more of difference, a camera parameter correction part 7 calculates the current camera parameter of the image pickup part 1 from the coordinates of at least two reference points in the current video and the coordinates at the time of installing the reference points. The calculation result is transmitted to an image processing part 2, and reflected in image processing. COPYRIGHT: (C)2010,JPO&INPIT
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