中国人民公安大学学报（自然科学版）

执笔高度是影响签名笔迹特征的重要因素。借助MovAlyzeR软件采集不同执笔高度下的电子签名数据，深入剖析了其静态特征(如书写水平、布局、笔顺、起收笔及连笔特征)和动态特征(如书写压力、书写速度及书写时长)。研究结果表明，执笔高度的变化对签名笔迹特征产生显著影响，其中书写水平、起收笔、平均书写压力、签名大小、平均书写速度及平均书写加速度等特征表现出较高的易变性，而笔顺、连笔、单字大小分布、字间组合特征以及特征变量的最值分布和书写时长分布特征则相对稳定。在电子签名鉴定实践中，应综合考量静态与动态特征，首先通过静态特征分析执笔高度变化的可能，再结合动态特征进行验证，并利用稳定性较高的变量特征进行综合分析，从而提升鉴定的准确性与客观性。

The height of holding a pen is an important factor that affects the characteristics of signature handwriting. Electronic signature data under different pen-holding heights were collected with the aid of MovAlyzeR software, and the static characteristics(such as writing level, layout, stroke order, beginning and ending of strokes, and connected strokes) and dynamic characteristics(such as writing pressure, writing speed, and writing duration) were deeply analyzed. The results show that the changes in pen-holding height have a significant impact on the characteristics of signature handwriting. The characteristics of writing level, beginning and ending of strokes, average writing pressure, signature size, average writing speed, and average writing acceleration show higher variability. In contrast, the characteristics of stroke order, connected strokes, single-character size distribution, inter-character combination, maximum value distribution of characteristic variables, and writing duration distribution are relatively stable. In the practice of electronic signature identification, static and dynamic characteristics should be comprehensively considered. First, the possibility of changes in pen-holding height should be analyzed through static characteristics, then verified by combining dynamic characteristics, and a comprehensive analysis should be conducted using more stable variable characteristics to improve the accuracy and objectivity of identification.