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Method for analyzing age on the basis of footprint characteristic circle

A technology of characteristic circles and footprints, applied in the field of footprint analysis, can solve problems such as the inability to accurately determine the age information of suspects

Inactive Publication Date: 2018-09-07
BEIJING UNITED VISION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the investigation of the case scene, we often find incomplete footprints, and conventional analysis methods cannot accurately determine the age information of the suspect. Therefore, a method that can accurately infer the age of the suspect based on the footprint characteristics that are easy to find is needed

Method used

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  • Method for analyzing age on the basis of footprint characteristic circle
  • Method for analyzing age on the basis of footprint characteristic circle
  • Method for analyzing age on the basis of footprint characteristic circle

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the embodiments shown in the drawings, but it should be noted that these embodiments are not a limitation of the present invention, and those of ordinary skill in the art make functional, method, or structural improvements based on these embodiments. Equivalent changes or substitutions fall within the protection scope of the present invention.

[0024] Participate figure 1 As shown, this embodiment provides a method for analyzing age based on a footprint feature circle, including:

[0025] Step S1: Observe the surface of the footprint and the surrounding parts, and find an ellipse or circle outline from the overall outline and subtle ripple lines;

[0026] First look at the overall outline of the footprint surface and surrounding parts, and look closely at the subtle ripple lines, and find characteristic ellipses or rings. The age is further determined according to the major axis of the ellipse or the ...

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Abstract

The invention provides a method for analyzing age on the basis of a footprint characteristic circle. The method comprises the following steps: observing the surface and the surrounding positions of afootprint, and searching the outline of an ellipse or circle from a whole outline and thin ripple lines; according to the long axis of the ellipse or the diameter of the circle, determining the age, wherein the allowable error range of the long axis of the ellipse or the diameter of the circle is + / -2mm. According to the characteristics of the long axis of the ellipse or the diameter of the circleof a field residual footprint and / or field overlapped footprint, the age of a suspect can be accurately judged.

Description

Technical field [0001] The invention belongs to the technical field of footprint analysis, and specifically relates to a method for analyzing age based on a footprint feature circle. Background technique [0002] The most headache for technicians at the crime scene is the analysis of multiple overlapping footprints. Conventional methods must separate multiple footprints well in order to analyze the characteristics of a single footprint and then comprehensively infer the suspect information. This requires quite a lot of technical personnel's business and technical skills, and very few people can achieve it. [0003] In case site investigations, we often find incomplete footprints, and conventional analysis methods cannot accurately determine the suspect’s age information. Therefore, we need a method that can accurately infer the suspect’s age based on easy-to-find footprint features. Summary of the invention [0004] The purpose of the present invention is to solve the deficiencies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N21/84G01B11/08G01B21/10
CPCG01B11/08G01B21/10G01N21/84G01N33/00
Inventor 胡书良胡晓雯
Owner BEIJING UNITED VISION TECH