| 摘要 |
Segments forming respective graphics and relations of connection therebetween are recognized by vector type list structure. Sweep lines are provided at the apices and crosspoints of the graphics in order, and the segments are divided at the crosspoints. The divided segments are reconnected with each other while switching the connecting relation therebetween, whereby the graphics are reconstructed into those classified according to the degrees of overlapping thereof. A reconstructed graphic having a designated degree of overlapping is extracted and outputted. |
