CN108508154A - Justify the method at analysis age based on footprint characteristics - Google Patents
Justify the method at analysis age based on footprint characteristics Download PDFInfo
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- CN108508154A CN108508154A CN201810283958.4A CN201810283958A CN108508154A CN 108508154 A CN108508154 A CN 108508154A CN 201810283958 A CN201810283958 A CN 201810283958A CN 108508154 A CN108508154 A CN 108508154A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention provides a kind of methods for justifying the analysis age based on footprint characteristics, including：Footprint surface and peripheral part are observed, oval or circle profile is searched out from overall profile and subtle ripple lines；Determine that age, the error range that elliptical long axis or diameter of a circle allow are positive and negative 2mm according to elliptical long axis or diameter of a circle.The present invention can accurately be inferred to suspect's age according to the transverse or diameter of a circle feature of live remaining footprint and/or scene overlapping footprint.
Description
Technical field
The invention belongs to footprint analysis technical fields, and in particular to a method of justifying the analysis age based on footprint characteristics.
Background technology
What scene of a crime most allowed technical staff's headache is the analysis of more pieces of overlapping footprints, and conventional method must detach well
More pieces of footprints could carry out single piece of footprint characteristics analysis, and then more pieces of comprehensive deduction suspect's information.This industry to technical staff
Technology foundation of being engaged in requirement is quite deep, and few people can reach.
In case site inspection, we can usually have found incomplete footprint, and conventional method of analysis can not accurately judge to dislike
The age information for doubting people can accurately be inferred to suspect's age therefore, it is necessary to a kind of based on the footprint characteristics for being easy to find
Method.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide according to the annulus or ellipse largely shown in footprint
The method at ring signature analysis age.
The embodiment provides a kind of methods for justifying the analysis age based on footprint characteristics, including：
Footprint surface and peripheral part are observed, it is ellipse to search out feature from overall profile and subtle ripple lines
The profile of circle or circle；
Determine that age, the error range that elliptical long axis or diameter of a circle allow are according to elliptical long axis or diameter of a circle
Positive and negative 2mm.
Further, footprint includes that tridimensional footprint, three-dimensional gypsum foot print, dust add layer or subtract a layer footprint, bloodstain footprint, quiet
The dust footprint of Electro Sorb.
Compared with prior art the beneficial effects of the invention are as follows：It can be according to live remaining footprint and/or scene overlapping foot
The transverse or diameter of a circle feature of mark are accurately inferred to suspect's age.
Description of the drawings
Fig. 1 is that the present invention is based on the flow charts that footprint characteristics justify the method for analyzing the age；
Fig. 2 is the elliptical footprint figure one for being present in footprint weight face in present invention experiment；
Fig. 3 is the elliptical footprint figure two for being present in footprint weight face in present invention experiment；
Fig. 4 is the elliptical footprint figure three for being present in footprint weight face in present invention experiment；
Fig. 5 is the elliptical footprint figure one for being present in the non-weight face of footprint in present invention experiment；
Fig. 6 is the elliptical footprint figure two for being present in the non-weight face of footprint in present invention experiment；
Fig. 7 is the elliptical footprint figure three for being present in the non-weight face of footprint in present invention experiment；
Fig. 8 is the elliptical footprint figure one for being present in footprint periphery in present invention experiment；
Fig. 9 is the elliptical footprint figure two for being present in footprint periphery in present invention experiment；
Figure 10 is the elliptical footprint figure three for being present in footprint periphery in present invention experiment；
Figure 11 is the elliptical footprint figure four for being present in footprint periphery in present invention experiment；
Figure 12 is the elliptical footprint figure one for being present in footprint and footprint periphery joint in present invention experiment；
Figure 13 is the elliptical footprint figure two for being present in footprint and footprint periphery joint in present invention experiment.
Specific implementation mode
The present invention is described in detail for each embodiment shown in below in conjunction with the accompanying drawings, but it should explanation, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to function, method made by these embodiments,
Or the equivalent transformation in structure or replacement, all belong to the scope of protection of the present invention within.
Join and present embodiments provides a kind of method for justifying the analysis age based on footprint characteristics shown in Fig. 1, including：
Step S1 observes footprint surface and peripheral part, is found from overall profile and subtle ripple lines
To oval or circle profile；
Overall profile is far first seen to footprint surface and peripheral part, closely sees subtle ripple lines, therefrom finds that feature is ellipse
Circle or annulus, the age is further determined that according to elliptical long axis or diameter of a circle, these oval or annulus can be in same piece of foot
More than one is found on mark and its close to periphery, but they can all have identical diameter of axle size.
Step S2 determines that age, described the range of age correspond to elliptical long axis according to elliptical long axis or diameter of a circle
Or numberical range defined by the positive and negative 2mm of diameter of a circle, i.e., the error range that elliptical long axis or diameter of a circle allow are positive and negative
2mm。
In the present embodiment, using the method for ellipse and circle analysis age on footprint, mainly to tridimensional footprint, three-dimensional stone
Cream footprint, dust add layer or subtract the dust footprint etc. of a layer footprint, bloodstain footprint, Electrostatic Absorption.
The mechanism of formation is：
The center of gravity of human body is with advancing age, gradually to move, move from front to back from the top down, such as：The weight of children
The heart is earlier, top, walks and is easy to hurt face when running, and aging old man is easy to hurt head rear pillow part.
The variation of this center of gravity causes the Equilibrium process (no matter run, walk, standing) of people accordingly to change,
One of reaction on footprint is exactly the size difference of eigenellipse or annulus, has thus also just reacted the difference at age.
Human body standing, walk, run have to ground formed impact, after ground is by the effect impacted, make ground shape
At vibrations dilatation wave, eigenellipse or annulus can be also formed in the ripple of vibrations dilatation wave, display footprint leaves the year of people
Age information.
Invention is further described in detail below.
Since " ellipse " or " circle " is widely distributed, easy easy survey, do not limited by legacy conditional, extracting method, for many years
Come receive grasp this method person favor, it cannot be only used for the sufficient examination of footprint of conventional legacy conditional, it may also be used for：
The Analysis of age of live standing footprint:
" ellipse " or " circle " will equally well reflects in standing sample, therefore, has standing shape at the scene of encountering
At footprint when, should such as real analysis legacy conditional, screen whether stayed by suspect, examine searching " ellipse " or " circle ",
To analyze suspect's age, further give a clue for cracking of cases.
Should " ellipse " refer to standing or walking movement in, foot (or shoes) and after holding trace media contact, for holding body weight
The heart balances, and the diffusion of vola power causes to hold trace medium or its attachment density changes, to which what is formed can be observed
The elliptical cyclic annular indication character of class, the grade of the long axis (or diameter of a circle) of such elliptical cyclic annular trace measure radix with
Age radix is consistent.
" oval or circle " is widely present：
It finds that " ellipse " is not only present in footprint central area by a large amount of footprint characteristics analyses, and is present in footprint
Peripheral region.Below by different laboratory extracting methods, to obtain different types of footprint sample, the footprint obtained
It is showed in sample " ellipse ".
(1) the footprint extracting method used in testing：
1, ink footprint sample collection method：The equably round brush black ink first on Electrostatic Absorption film, is then buckled to
On white paper, barefoot, wear shoes sample is acquired, black Plane Footprint sample is obtained.
2, Electrostatic Absorption acquires footprint example-based approach：
Dust adds layer (or subtracting layer) footprint on Manufacture of Floor brick (or leather) first；Then Electrostatic Absorption instrument is taken to act on electrostatic
On adsorbed film, film is made to sprawl and be close to floor tile (or leather) naturally；Finally to discharge, Electrostatic Absorption film is opened in hand-held safety zone,
Add and (subtract) layer footprint to take pictures dust on film.
3, Electrostatic Absorption film transfer acquisition footprint example-based approach：
Step has acquired ink barefoot, after wear shoes sample, continue Electrostatic Absorption film with ink footprint sample collection method
It tips upside down on another a blank sheet of paper, is orderly rolled with clean ink roller, remaining whole ink is made to be transferred to new blank sheet of paper
On, obtain light Plane Footprint sample black background.
4, gypsum mould legal system makees footprint sample：
One piece of relatively soft dirt floor is looked for first, clears up sundries；Tridimensional footprint is stepped on；Enclosure wall gently is set, on the outside of enclosure wall
Gently mound；Then gypsum liquid is modulated；By the enclosure wall wall of Split cone lower end aligned footprint bow inside, gypsum liquid is at the uniform velocity perfused；
Place skeleton；After standing 15 minutes, height, age, weight being write exactly, clearing up enclosure wall, the finger of both hands ten struts, and digs the mould made
Type；It is impregnated in clear water, and pats footprint face, extra silt is made to fall off；Ventilation is placed on to dry for use.
(2) " ellipse " (or " circle ") shown in the footprint sample that the above method extracts
1, it is present in " ellipse " in footprint weight face：
As shown in Fig. 2, barefoot in ink footprint sample, in footprint half sole first metatarsal bone weight area, have one it is black with periphery
The different elliptical annular trace of color ink mark density occurs, the transverse length about 25mm, and the age of the people that keeps sample is 26 years old.
As shown in figure 3, in wear shoes ink footprint sample, in footprint half sole first metatarsal bone front end, rear end weight area, have respectively
One elliptical annular trace different from periphery black ink marks density occurs, and oval size is identical, and long axis length is
The age of 27.5mm, the people that keeps sample are 27 years old.
As shown in figure 4, in the gypsum foot print sample that wear shoes make, in footprint half sole second and third metatarsal front end, first metatarsal bone
Rear end weight area has the elliptical annular trace that one different from periphery gypsum density, color is shallower to occur respectively, and oval
Size is identical, and long axis length is 34mm, and the age of the people that keeps sample is 34 years old.
2, it is present in " ellipse " (or " circle ") in the non-weight face of footprint
As shown in figure 5, barefoot in ink footprint sample, there are one and periphery black in the arch area in the non-weight face of footprint
The different elliptical annular trace of ink marks density occurs, transverse length 27mm, and the age of the people that keeps sample is 27 years old.
As shown in fig. 6, barefoot in ink footprint sample, there are one and periphery black in the arch area in the non-weight face of footprint
The different elliptical annular trace of ink marks density occurs, and the elliptical center ink colors are shallower, long axis length 29-30mm, should
Keep sample people age be 29 years old.
As shown in fig. 7, in the gypsum foot print sample that wear shoes make, there are two and week in the arch area in the non-weight face of footprint
The different elliptical annular trace of rim gypsum density occurs, transverse length 27-28mm, and the age of the people that keeps sample is 27
Year.
3, it is present in " ellipse " of footprint periphery
As shown in figure 8, in the barefoot footprint sample of Electrostatic Absorption film brush ink collection, in the paper that footprint periphery is clean
On, there is a circle black ink marks, ink marks edge is the higher black ellipse ring-type trace of density, which is
The age of 26mm, the people that keeps sample are 26 years old.
As shown in figure 9, in the barefoot footprint sample of Electrostatic Absorption film transfer, the black oil ink-covered area in light footprint periphery,
There is multiple density black ellipse ring-type trace different from periphery ink marks density, the elliptical long axis length is in 33-35mm
In range, the age of the people that keeps sample is 34 years old.
As shown in Figure 10, in the wear shoes footprint sample of Electrostatic Absorption film transfer, the black oil ink-covered area in light footprint periphery,
There is multiple density black ellipse ring-type trace different from periphery ink marks density, the elliptical long axis length is in 33-35mm
In range, the age of the people that keeps sample is 34 years old.
As shown in figure 11, in the gypsum foot print sample that wear shoes make, there are multiple density and Zhou Bianshi in footprint periphery
The different oval ring-type trace of cream density, the elliptical long axis length is within the scope of 26-28mm, and the age of the people that keeps sample is 27
Year.
4, it is present in " ellipse " of footprint and footprint periphery joint
As shown in figure 12, the floor tile surface dirt of Electrostatic Absorption method extraction subtracts a layer footprint, fifth metatarsal bone and its outside
It is rendered obvious by a color light " ellipse ", which is 27.5mm, which is 27 years old.
As shown in figure 13, the flooring laminate surface dirt of Electrostatic Absorption method extraction adds a layer footprint, on the outside of heel portion and its outer
It encloses joint and has been rendered obvious by " ellipse " that one different from periphery trace density, color is light, which is
33mm, which is 34 years old.
In the Analysis of age of live incompleteness footprint, " transverse or diameter of a circle " infers that the method at age is unrestricted,
As long as site inspection personnel have grasped the method well, incomplete footprint and footprint periphery still can examine at the scene,
To accurately find " transverse or diameter of a circle ", it is inferred to suspect's age.
In the Analysis of age of scene overlapping footprint, " transverse or diameter of a circle " method can evade separation Dan Mei well
The difficulty of footprint can be found in footprint periphery and find " transverse or diameter of a circle ", to be inferred to suspect's age.
This method is easy to learn and use, and accuracy rate is higher in practical applications.Utilize the ellipse reflected in footprint characteristics
(circle) impression infers that the method for the age bracket that footprint leaves people is extremely effective, and this method is intuitively easy, use easy to operation.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
Claims (2)
1. a method of justifying the analysis age based on footprint characteristics, which is characterized in that including：
Footprint surface and peripheral part are observed, searched out from overall profile and subtle ripple lines oval or circle
Profile；
Determine that age, the error range that elliptical long axis or diameter of a circle allow are positive and negative according to elliptical long axis or diameter of a circle
2mm。
2. the method according to claim 1 for justifying the analysis age based on footprint characteristics, which is characterized in that the footprint includes
Tridimensional footprint, three-dimensional gypsum foot print, dust add layer or subtract the dust footprint of a layer footprint, bloodstain footprint, Electrostatic Absorption.
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| CN201810283958.4A CN108508154A (en) | 2018-04-02 | 2018-04-02 | Justify the method at analysis age based on footprint characteristics |
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| CN201810283958.4A CN108508154A (en) | 2018-04-02 | 2018-04-02 | Justify the method at analysis age based on footprint characteristics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111260527A (en) * | 2020-01-23 | 2020-06-09 | 胡书良 | Method for analyzing age based on characteristics of triangle with medium side in footprint |
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2018
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| CN102184539A (en) * | 2011-04-29 | 2011-09-14 | 王靖中 | Image-processing-technology-based plane footprint detection and analysis system and method thereof |
| CN103198466A (en) * | 2013-04-23 | 2013-07-10 | 昆明信诺莱伯科技有限公司 | Comprehensive index quantitative detection method by utilizing stride characteristics |
| CN104574426A (en) * | 2015-02-03 | 2015-04-29 | 大连恒锐科技股份有限公司 | Method and device for human body feature analysis and based on barefoot or stocking-wearing footprint images |
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Cited By (1)
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| CN111260527A (en) * | 2020-01-23 | 2020-06-09 | 胡书良 | Method for analyzing age based on characteristics of triangle with medium side in footprint |
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