基于三维扫描技术的字迹书写笔压显现研究

Research on Handwriting Pen Pressure Features Based on 3D Scan Technology

笔压特征有别于传统笔迹检验中的二维特征,它反映出笔迹三维层面的信息,能为笔迹检验提供更好的帮助。借助结构光三维扫描技术对字迹的压痕深度数据进行提取,通过Geomagic Qualify软件建立压痕的三维形态模型和彩色压力图像,帮助检验人员直观准确地获取笔压特征。实验结果表明,该技术不仅可以呈现字迹压痕的三维形态,还可以排除油墨颜色的干扰,达到其他方法无法获得的效果,为笔迹检验提供了一个有效的工具。

Pen pressure feature is different from the two-dimensional feature in traditional handwriting inspection.It reflects the three-dimensional information of handwriting,and can provide better help for handwriting inspection.With the help of structured light 3D scanning technology,the indentation depth data of handwriting is extracted,and the 3D shape model and color pressure image of the indentation are established by Geomagic Qualify software,which helps the inspectors to obtain the pen pressure features intuitively and accurately.The experimental results show that the technology can not only present the three-dimensional shape of handwriting indentation,but also eliminate the interference of ink color,which can achieve the effect that other methods can not obtain,and provides an effective tool for handwriting inspection.