| 摘要 |
PURPOSE:To obtain the picture information expanding to a plane by conserving the distance of each point on the curved surfaces by geometrical calculation after the picture is obtained as luminance information on the curved surfaces. CONSTITUTION:After a node to be the reference is selected, two nodes in the vicinity are selected and an adequate two-dimensional expansion coordinate u-v being orthogonally crossed on the plane passing the three nodes is determined. At this time, on the assumption that the distance in the minute section between each point on an original 201 is conserved even in an observation coordinate system, the position on the two-dimensional coordinate system U-V is determined from the space distance between nodes recursively starting from the vicinity of the three obtained nodes. In this case, the first triangle patch is made from P0, P1, P2, a plane coordinates is made based on this. P0 is the origin and the coordinate position of P3 on the u-v space is determined so that the distance of P1-P3, P2-P3 may be conserved. Thus, the two-dimensional luminance information can be obtained. |
