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随着科学技术水平迅猛发展,犯罪分子的作案手段和作案方法日趋智能化、复杂化,现场其他可利用痕迹越来越少,但是现场足迹的遗留却是作案人难以避免的。因此,足迹检验技术的作用也愈显突出。在足迹检验鉴定过程中,常常碰到犯罪人的足迹与样本足迹个别特征相符合,但其蹬痕、踏痕等部分种类特征却存在一定差异,这就给检验鉴定工作带来一定困难,为了合理地解释二者之间的差异,是本质的还是不同的行走速度造成非本质的差异,本文从实际出发,测量统计了不同人在不同行走速度(静立、走动、跑动、跳动)时平面穿鞋足迹样本的蹬痕直径、跟压半径和踏痕半径,以及踏痕、蹬痕、跟压等步态和步幅特征之间的搭配。根据具体实例的数据并配合直观图对所取得的数据进行了定性和定量的讨论分析;并对各种变化的原因进行了分析。
With the rapid development of science and technology, criminals have become increasingly intelligent and complicated in their methods of committing crimes and committing crimes. There are fewer and fewer other available traces on the scene. However, the legacy of the trail is unavoidable. Therefore, the role of footprint inspection technology is also more prominent. In the process of footprinting and identification, it is often found that the perpetrator’s footprints are consistent with the individual characteristics of the sample footprints. However, there are some differences between some types of footprints and footprints, which brings certain difficulties to the verification and identification work. Reasonably explain the difference between the two is essential or different speed of walking caused by non-essential differences, this article from the reality, the measurement statistics of different people in different walking speed (static stand, walking, running, beating) Plane wear shoe footprint sample track diameter, followed by the radius and the radius of the foot marks, and marks, marks, followed by the gait and stride characteristics such as the match between. Based on the data of the specific examples and with the visualization diagram, the data obtained were qualitatively and quantitatively discussed and analyzed; and the causes of various changes were analyzed.