CN101363777A - Track acquisition instrument - Google Patents
Track acquisition instrument Download PDFInfo
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- CN101363777A CN101363777A CNA2007100124447A CN200710012444A CN101363777A CN 101363777 A CN101363777 A CN 101363777A CN A2007100124447 A CNA2007100124447 A CN A2007100124447A CN 200710012444 A CN200710012444 A CN 200710012444A CN 101363777 A CN101363777 A CN 101363777A
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- Prior art keywords
- acquisition instrument
- trample
- lens
- platform
- footprint
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Abstract
The invention discloses a footprint acquisition instrument, which comprises a box body (9), a scattering light source (1), a trample platform and a shooting device (3). The trample platform consists of a plane lens (4), and a transparent glue film (5) tightly attached to the upper surface of the plane lens (4). A reflective membrane (6) is laid on the trample platform; a plane mirror (7) is arranged obliquely below the trample platform; and a photographic lens of the shooting device (3) is arranged perpendicular to the plane mirror (7). The image formed by the acquisition instrument is not influenced by the background light rays of a trample surface, and the optical nature of materials on the bottom of a foot. The imaging is clear and the background is clean. Since the acquisition instrument adopts the elastic transparent glue film for imaging, the black characteristic of the image can reflect the pressure characteristic of the footprint, thereby providing pressure information for the analysis of the footprint by technicians. The plane mirror is utilized to reflect the image so as to increase the object distance of the acquisition instrument, thereby effectively reducing the volume of the acquisition instrument.
Description
Technical field:
The present invention relates to a kind of equipment of gathering footprint image.
Background technology:
As everyone knows, footprint is an important clue of public security investigation.The method of in the past gathering footprint has on suspect's sole coats printing ink, steps on to be imprinted on the blank sheet of paper, is entered into computing machine by scanning then.This kind acquisition mode, complex operation, and also it is bigger influenced by human factor, smears unequal situation as printing ink, will directly influence the accuracy of qualification result.Also have a kind of footprint harvester at present, its main body is the prism of isosceles, is respectively arranged with light source and filming apparatus in the prism two symmetrical sides of isosceles, and the suspect tramples on the 3rd faceted pebble, and then the footprint direct imaging is in filming apparatus.Though this device is easy to use, the image background that collects is impure, and footwear seals causes easily to mix and disturb when colored, is unfavorable for investigation.
Summary of the invention:
The present invention is directed to the above-mentioned deficiency of prior art, provide a kind of imaging clear, the track acquisition instrument that background is pure.
Technical solution of the present invention is: a kind of track acquisition instrument, comprise casing 9, be provided with scattering light source 1 in it, trample platform and filming apparatus 3, the described platform of trampling constitutes by planar lens 4 and with transparent adhesive film 5 that planar lens 4 upper surfaces fit tightly, trample platform above be equipped with reflective membrane 6; Trample platform below be tiltedly installed with level crossing 7, the camera lens of filming apparatus 3 and level crossing 7 vertical angle and level crossing and the lens angle complementary angles each other that are provided with.
Described transparent adhesive film 5 is the refractive index colloid identical or close with the refractive index of planar lens material, and its thickness is preferably less than 1 millimeter.
Described scattering light source 1 is preferably led light source, is arranged on the side of planar lens 4.
The thickness of described planar lens 4 is preferably 12-18 millimeters.
Image-forming principle of the present invention is for when trampling platform and bear pressure, and the reflective membrane at footmark position and the transparent adhesive film formation reflective surface of combining closely is propagated formation high light image in the plane reflection mode at this position glazed thread; And the light at the reflective membrane position that other are not stressed is propagated in the diffuse reflection mode in lens inside, does not form image or image is darker, then promptly forms the image of white footmark, black background this moment, finishes image through flat mirror reflects to filming apparatus and catches.The image that this device forms is not trampled face background light to be influenced, and is not subjected to the optical property influence of vola (sole, sole, the stocking sole) material, and imaging is clear, background is pure; Because device adopts the rubber-like transparent adhesive film to come imaging, become the gradation feature can reflect the footprint pressure characteristic, can provide pressure information to the analysis of footprint for the technician.And utilize the flat mirror reflects image can increase the filming apparatus object distance, effectively reduce device volume.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
Below in conjunction with description of drawings the specific embodiment of the present invention.
As shown in Figure 1, a kind of track acquisition instrument, comprise casing 9, be provided with scattering light source 1 in it, trample platform and filming apparatus 3, to trample platform be 15 millimeters planar lens 4 by thickness and constitute with transparent adhesive film 5 that planar lens 4 upper surfaces fit tightly, planar lens places casing top, and minute surface is parallel with the casing upper and lower surface.Transparent adhesive film 5 is the refractive index colloid identical or close with the refractive index of planar lens material, and its thickness is preferably less than 1 millimeter.Scattering light source 1 is preferably led light source, is arranged on the side of planar lens 4.Trample platform above be equipped with reflective membrane 6; Trample platform below be provided with level crossing 7, the angle of trampling platform and level crossing 7 be 45 the degree; The angle of the camera lens of filming apparatus 3 and level crossing 7 is that 45 degree are provided with, and promptly is horizontally disposed with, and filming apparatus 3 is preferably digital camera, can directly image be transported in the computing machine.During use, trample on reflective membrane 6 in vola 8.
Claims (4)
1, a kind of track acquisition instrument, comprise casing (9), be provided with scattering light source (1) in it, trample platform and filming apparatus (3), it is characterized in that: describedly trample the transparent adhesive film (5) that platform fits tightly by planar lens (4) and with planar lens (4) upper surface and constitute, trample platform above be equipped with reflective membrane (6); Trample platform below be tiltedly installed with level crossing (7), vertical angle and level crossing and the lens angle complementary angle each other that is provided with of the camera lens of filming apparatus (3) with level crossing (7).
2, track acquisition instrument according to claim 1 is characterized in that: described transparent adhesive film (5) is the refractive index colloid identical or close with the refractive index of planar lens material, and its thickness is less than 1 millimeter.
3, track acquisition instrument according to claim 1 and 2 is characterized in that: described scattering light source (1) is a led light source, is arranged on the side of planar lens (4).
4, track acquisition instrument according to claim 3 is characterized in that: the thickness of described planar lens (4) is 10---20 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100124447A CN101363777A (en) | 2007-08-09 | 2007-08-09 | Track acquisition instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100124447A CN101363777A (en) | 2007-08-09 | 2007-08-09 | Track acquisition instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101363777A true CN101363777A (en) | 2009-02-11 |
Family
ID=40390266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100124447A Pending CN101363777A (en) | 2007-08-09 | 2007-08-09 | Track acquisition instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101363777A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142086A (en) * | 2010-02-03 | 2011-08-03 | 鸿富锦精密工业（深圳）有限公司 | Circuit board detection system and image acquisition device thereof |
| WO2014101003A1 (en) * | 2012-12-26 | 2014-07-03 | 大连恒锐科技股份有限公司 | Pressure-sensing light and shadow imaging system and method for processing footprint image formed by the system |
| CN109358061A (en) * | 2018-11-29 | 2019-02-19 | 大连恒锐科技股份有限公司 | A kind of footprint patch scanned imagery device |
| CN109765232A (en) * | 2019-01-29 | 2019-05-17 | 北京和众视野科技有限公司 | Scattering optical scanning imaging method based on flat surface attachment trace |
| CN111012304A (en) * | 2018-10-09 | 2020-04-17 | 深圳市第二人民医院 | Foot pathology screening frame |
| CN111067533A (en) * | 2020-01-04 | 2020-04-28 | 广东足迹鞋业有限公司 | Foot examination instrument with all-dimensional shooting function |
| CN114947824A (en) * | 2022-04-14 | 2022-08-30 | 吉林大学 | Animal gait detection device and method |
-
2007
- 2007-08-09 CN CNA2007100124447A patent/CN101363777A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142086A (en) * | 2010-02-03 | 2011-08-03 | 鸿富锦精密工业（深圳）有限公司 | Circuit board detection system and image acquisition device thereof |
| WO2014101003A1 (en) * | 2012-12-26 | 2014-07-03 | 大连恒锐科技股份有限公司 | Pressure-sensing light and shadow imaging system and method for processing footprint image formed by the system |
| CN111012304A (en) * | 2018-10-09 | 2020-04-17 | 深圳市第二人民医院 | Foot pathology screening frame |
| CN109358061A (en) * | 2018-11-29 | 2019-02-19 | 大连恒锐科技股份有限公司 | A kind of footprint patch scanned imagery device |
| CN109765232A (en) * | 2019-01-29 | 2019-05-17 | 北京和众视野科技有限公司 | Scattering optical scanning imaging method based on flat surface attachment trace |
| CN109765232B (en) * | 2019-01-29 | 2021-03-30 | 北京和众视野科技有限公司 | Scattered light scanning imaging method based on flat surface attaching trace |
| CN111067533A (en) * | 2020-01-04 | 2020-04-28 | 广东足迹鞋业有限公司 | Foot examination instrument with all-dimensional shooting function |
| CN114947824A (en) * | 2022-04-14 | 2022-08-30 | 吉林大学 | Animal gait detection device and method |
| CN114947824B (en) * | 2022-04-14 | 2022-12-20 | 吉林大学 | Animal gait detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090211 |