| 摘要 |
<P>PROBLEM TO BE SOLVED: To stably measure the three-dimensional position of a feature point. <P>SOLUTION: A tracing part 13 traces a feature point extracted by an extraction part 12 from each frame of time series video images photographed by a photographing part 11 on the time series video images. The tracing is performed by sequentially searching a correspondence relation between a feature point in the former frame in two frames continuing in time series among the time series video images and the point corresponding to the feature point in the latter frame, in each frame of the time series video images. A registration part 15 registers position information on a key frame about the feature point included in the key frame and information on a tracing result of the feature point each time the movement of the photographing part 11 exceeds a prescribed amount. The key frame is a frame of a time series video image photographed just after the movement exceeds the prescribed amount. A calculation part 16 calculates the coordinates of a three-dimensional position of the feature point by using the movement and the information registered in the registration part 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
