穿袜足迹抬痕形态特征初探

Morphological Characteristics of Footprints Left after Uplifting the Feet Wearing Socks

目的探析穿袜足迹抬痕形态特征的稳定性和特定性,为分析穿袜足迹提供新方法。方法利用足迹形象特征分析足型种类,使用Photoshop软件对拍照提取的穿袜足迹进行重叠比对并直观观察其效果,客观评判穿袜足迹抬痕形态特征价值。结果同一人在同速度状态下足迹抬痕形态特征具有稳定性,在不同速度状态下穿袜足迹抬痕形态特征随着行走速度的增加,其反映的清晰度越好,跖区的第一二跖骨之间形成的抬痕存在差异,但从足跟到足跖趾部位连贯的抬痕特征仍可反映起足特征。在多人足长相近的前提下,各行走状态对应形成的穿袜足迹抬痕形态特征,在足跖趾区反映的差异程度较大,说明穿袜足迹抬痕形态特征存在特定性。结论在现有穿袜足迹特征基础上,将具有反映性、可靠性和特定性的抬痕形态特征视为穿袜足迹检验中的一种新特征,可以为全面分析穿袜足迹的信息增加新思路,同时为穿袜足迹检验鉴别提供理论依据。

Objective To explore the stable and specific morphological characteristics of footprints left after upliftingsocks-worn feet in order to provide a new method for the analysis of such footprints.Methods Footprints were made andcollected from five kinds of movement done by the feet wearingink-painted socks.Through analysis of foot types by imagefeatures of the photographed footprints,the overlapping comparison was carried out into the photographs by Photoshopsoftware,and a judgment was made on the value of morphological characteristics of the footprints from uplifting socks-wornfeet.Results Same sock-worn foot leaves stable morphological characteristics of its marks under the uniform walk speed.When walk speed increasing,clearer morphological characteristics will be observed.Although differences exist between the 1st and 2nd metatarsal of the plantar area,the consistent morphological characteristics are present from heel to toe,reflectingindividual foot’s uplifting feature.If several socks-worn length-similar feet walk in diverse states,the respective morphologicalcharacteristics display bigger difference in the plantar toe area,demonstrating specificity among feet.Conclusions Thefootprint morphological characteristics from uplifting socks-worn feet may be considered as one kind of gait characteristics ifthey are reflective,reliable and specific,perhaps capable of offering new ideas for analysis of such footprints.