| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an object tracking method with which complicated occlusion can be handled. Ž<P>SOLUTION: In order to track an object in a three-dimensional (3D) manner, a video image of a 3D camera observing a predetermined environment from an obliquely upper side is analyzed to form a depth map for a background of the environment and a depth map for a current scene. The created depth maps are compared to form a depth map of a foreground, and on the basis of the foreground depth map, 3D coordinates at respective points are computed. The 3D coordinates are transformed into world coordinates, and for each of the point of the foreground, only zw values of the world coordinates are extracted and mapped to respective pixels of an image plane, thereby forming a world-Z map. A point, with a great change amount of the zw values, between neighboring pixels on the world-Z map is detected to detect a boundary of one or more objects included in the foreground. On the basis of the detected boundary, the objects are segmented, thereby creating a 3D locus. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
