FEATURE EXPRESSION DEVICE, RECOGNITION SYSTEM INCLUDING THE SAME, AND FEATURE EXPRESSION PROGRAM

摘要

To provide a device, system and program to characterize representation in a form in which a load of recognition and learning is small.SOLUTION: A feature expression device 20 for character representation of three-dimensional point cloud data includes a distance field conversion unit 21 for converting a distance field representing the nearest neighbor distance φ(s) from a coordinates sof a spatial sample point s, s, s, and spatial sample point s to the nearest neighbor point, around which a set of points is set, a quasi-projection unit 22 for obtaining a conversion to a standard coordinate system by a singular value decomposition of a matrix M consisting of the coordinates s, s, sand the nearest distance φ(s) of the spatial sample point s, and a parameterization unit 23 to input the coordinates Lof the spatial sample points s converted to the standard coordinate system, and to output a weight β as a feature vector of three-dimensional point cloud data by training the extreme learning machine which outputs the nearest distance φ(s).SELECTED DRAWING: Figure 1