LINE DRAWING PROCESSING DEVICE, PROGRAM, AND LINE DRAWING PROCESSING METHOD

摘要

Multi gradation acquisition data (D2) generated by acquiring the multi gradation of line drawing data (D1) is obtained and core lines are extracted from the line drawing. Further, a closed area which is surrounded by the core lines and which is smaller than a predetermined criterion is selected. The centroid point of the selected closed area is determined and a plurality of adjacent points which are adjacent to the centroid point on the basis of a predetermined distance criterion are set. With reference to the multi gradation acquisition data (D2), the gradation values corresponding to the centroid point and each of the adjacent points are obtained and compared. Furthermore, an adjacent point having a gradation value closest to the gradation value corresponding to the centroid point is selected. A boundary line interposed between the closed area including the centroid point and a closed area including the selected adjacent point is deleted.