Developments of CAD System Package for Pattern Design Grading and Nesting (I) -Automatic Pattern Design -

의복 생산 공정 자동화를 위한 CAD System의 개발 (I) -자동 패턴 디자인-

The objective of this research is to develop the CAD system package used by Personal computer for automatic Pattern designs, grading, and nesting, based on the mathematical and comp stational principles. The basic pattern designs of bodice, sleeve, skirt and slacks are obtained from the measurements of the physical data and manual input of the patterns. The former reduces the errors which are principally caused by user's skill and fence, but shows simple patterns. On the other hand the latter varies the pattern styles and modifications. The complete software package for drafting these patterns has been developed. Especially, two-dimentional curve formation is gained by numerical and computational theories for creating the smooth curves. Thus free curves of 2- D are easily gained without user's intervention. The techniques of dealing with the curve segments in 2- D are considered the characteristics of an individual body by the formation of the curves smoothly. This package of the computer programs is capable of drafting any Pattern designs and modifications required.