笔力特征反映书写人书写时用笔的力度,动态展示运笔力度的变化情况。将签名运动过程中笔压的变化规律和签名笔迹静态图像的颜色变化建立数学模型,利用签名笔迹二维静态图像的颜色深浅变化反映签名笔迹的笔力特征的变化,结合计算机技术显示笔迹中各点的相对笔力值。通过大量的实验获取静态签名笔迹颜色变化与笔力变化的数学模型。运用笔力特征的量化分析为专家做出鉴定结论提供客观依据。 Tensional characteristics reflect the writer’s writing with the intensity of the pen, dynamic display changes in the intensity of writing. The mathematical model of the variation of the pen pressure and the color change of the static images of the signature handwriting during the signature movement is established. The variation of the pen force characteristics of the signature handwriting is reflected by the change of the color depth of the two-dimensional static image of the signature handwriting. Relative force value. Through a large number of experiments to obtain static signature handwriting color change and pen force changes mathematical model. Applying the quantitative analysis of the pen force characteristics provides an objective basis for experts to make identification conclusions.