| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a house alteration judging method which enables a perfect automation. <P>SOLUTION: A laser data 1 including a ground positional information and an altitude information about a specific region is taken from the sky at two times of new and old times. The altitude information is set as a representative altitude value by sampling on each square of a mesh set based on the ground positional information. The alteration of the house is judged from the number of squares 2 in which the difference of representative altitude value of new and old times exceeds a threshold set at about one floor high. <P>COPYRIGHT: (C)2004,JPO |
