| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of determining house movement highly precise in movement determination and capable of complete automation. <P>SOLUTION: In the method for determining the movement of houses 10 within a data acquisition region on the basis of data acquired from above at two new and old time intervals, a prescribed region within new data is trimmed by prepared house polygon data 3 corresponding to the prescribed region and extracted as a region 1 to be determined. Then gradation values of color image data 11 over the whole region 1 to be determined and two types of difference values of altitude data 12 to latitude values at the two new and old time intervals are computed as evaluation values. On the basis of the evaluation values, the presence or absence of the movement of the houses within the region 1 to be determined is determined with reference to a preset determination table acquired by combining two types of evaluation reference values. <P>COPYRIGHT: (C)2007,JPO&INPIT |
