【摘要】 线稿生成是计算机辅助绘画流程中一个关键步骤.针对现有辅助软件中存在的自动生成效果差、通过"钢笔"或"铅笔"工具勾勒效率低的问题,提出一种半自动线稿生成算法.该算法的输入为经过扫描或拍摄得到的数字化草稿,首先经过笔画提取和矢量化等步骤自动生成初始线稿;然后通过基于笔画段的简单、便捷的用户交互式编辑得到最终线稿.通过用户调查的统计结果表明,文中算法能够生成满足启发性原则的、近似于"钢笔"勾勒方法得到的线稿,满足用户交互需求,并有效地减少了创作者所需花费的精力和时间,改进了计算机辅助绘画流程.更多还原

【Abstract】 Line art generation is a key step in computer-aided drawing.The results generated by current automatic tools from draft images can not meet the requirements in practical applications.The interactive process using "pen"or "pencil"tools is boring and time-consuming.To solve these problems,this paper proposes a semi-automatic approach for line art generation from a digitalized draft image.Firstly an initial line art is generated by an automatic process including strokes extraction and vectorization.Then the final line art is obtained via intuitive and smart users’interactions based on line-fragments.User studies show that the proposed approach can generate satisfied line art images that are similar to those by manual methods.It greatly reduces manual operations and processing time and improves the overall process of personal computer-aided drawing.更多还原