| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional(3D) data processing method capable of simply executing the retrieval of an anchor point and the plotting of an isoplethic graph from dispersed three-dimensional (3D) data in which the number or positions of grating points are set up at random. SOLUTION: Measured point data distributing X and Y coordinate values at random (a) are divided into groups by lines drawn at a fixed interval (b), measured points in each group are mutually connected (c), and grating-like 3D data are generated by interpolating 3D data having the same X and Y coordinate values in a group having X and Y coordinate values less than the maximum number of X and Y coordinate values out of respective groups (d). In a group having X and Y coordinate values less than the maximum number of X and Y coordinate values, an interval between the X and Y coordinate values in the group is equally divided to interpolate 3D data estimating the Z value of the divided point. |
