| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional shape correction processing method for extracting and removing the autointerference part of a three-dimensional shape by supposing that the removal of autointerference is to be applied as a single independent operation at a step after operation to some degree as against removing of autointerference at each operation step of shape deformation. SOLUTION: A convex hull surrounding respective surfaces registered in a table is obtained and the obtained convex hull is registered in the table (step for convex hull calculation). A place where there is a possibility of autointerference is extracted based on the presence and absence of the interference mutually between the convex hulls registered in the table (step 3-1 for judging interference between the convex hulls). Concerning the places where there is the possibility of autointerference, interference calculation is performed with curved surfaces as the objects of each other (step 3-2 for interference calculation between the curved surfaces). Areas corresponding to the autointerference parts on the respective surfaces are determined with an interference line obtained as the result of interference calculation as a boundary and removed (step 3-3 for removing unnecessary area).
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