| 摘要 |
PROBLEM TO BE SOLVED: To improve the search accuracy of a correspondence point search device.SOLUTION: The correspondence point search device includes: a storage unit for storing the position information and connection information of each point of three-dimensional models comprising a point group; a sampling point determination unit for determining a plurality of sampling points in the point group about each of the three-dimensional models; a feature amount calculation unit for using the position information and connection information of each sampling point to calculate the feature amount of each sampling point; a similarity calculation unit for calculating the similarity between sampling points with each other of two three-dimensional models on the basis of the feature amount; and a correspondence point determination unit for determining a point corresponding to each sampling point of a first three-dimensional model among sampling points of a second three-dimensional model on the basis of the similarity. The feature amount calculation unit constructs a local depth image in a coordinate system of a virtual camera with a normal direction on a curve surface of a three-dimensional model as a Z direction, and with a gradient direction of an average diffusion length on the curve surface as a Y direction in each sampling point, and calculates a feature amount by using the depth of each pixel included in the local depth image.SELECTED DRAWING: Figure 1 |
