运用笔迹三维信息提取分析仪对正常签名书写力的研究  

Research on Signature's Writing Pressure with 3D Handwriting Information Acquisition Analyzer

作　　者：申思[1] 韩丹岩[2] 

机构地区：[1]浙江警察学院刑事科学技术系,浙江杭州310053 [2]中国刑事警察学院,辽宁沈阳110035

出　　处：《中国司法鉴定》2015年第6期73-79,共7页Chinese Journal of Forensic Sciences

基　　金：公安部科技信化局(2012BAK02B00);公安部物证鉴定中心(2012BAK02B05)

摘　　要：目的探索速度变化、不同衬垫条件和不同书写工具等书写条件之下,签名书写压力的稳定程度和变化规律。方法运用笔迹三维特征提取分析仪的压力彩色图显、压痕去墨色图显、压痕深度曲线分析等功能,分析正常签名笔迹的三维信息。结果书写速度、衬垫条件和书写工具的改变对正常签名笔迹的书写压力均存在影响。结论慢速签名的笔力分布相对快速笔迹更均衡,笔迹压痕的深度与书写速度无稳定对应关系;笔痕深度随衬垫物厚度增加而加深,达到最大值后继续增加衬垫物的厚度,凹痕深度反而变小,笔力较大者笔痕达到最大值时所需衬垫物的页数大于笔力较小者;中性圆珠笔字迹与油性圆珠笔字迹的笔痕形态明显不同,中性圆珠笔字迹笔画边缘凸起的高度大于油性圆珠笔字迹。Objective To study the change and stability of signatures＇ writing pressure with different writing speeds, underlay and writing tools. Method The signature＇s 3D information was analyzed by the 3D handwriting information acquisition analyzer, which has functions of pseudo color display, indentation display without no ink color and calculation of the depth of ink entries. Results Changes of writing speed, underlay and writing tools all influenced the signature＇ s writing pressure. Conclusion Writing pressure distributes more uniformly at relatively slow speed. Depth of handwriting＇ s indentation has no relevance with writing speed. It becomes deeper with the increase of underlay, but the value of depth decreases when adding papers after it reaches the maximal value. People with larger writing strength need less liner to reach the maximal value of indentation. Handwriting＇s indentations are different between gel pens and ballpoint pens, as the former produce more obvious raised edge.

关 键 词：笔迹 三维信息 签名 书写压力 

分 类 号：DF794.2[政治法律—诉讼法学]