| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a window area detection device that detects a window area with high precision even when an image of the window area is not uniform owing to reflection or depending upon sunshine conditions, and a three-dimensional map creation device that uses a detection result thereof for simulation in radio wave propagation estimation. <P>SOLUTION: Noticing that since an adjacent building etc., may be reflected in a window area of a lower or intermediate story of a building, a view differs with a photographic angle, a first window area candidate detection part 47 finds correspondence relation among respective pixels by positioning three omnidirectional images IC, IR, and IL differing in photographic angles so that the respective images of the building of the interest is put one over another, and compares corresponding image areas with one another to detect a rectangular area having large differences in pixel value as a first window area candidate Rw1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
