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A full-spectrum forensics instrument and forensics method for curved surface forensics

A full-spectrum, forensic instrument technology, applied in spectrum investigation, spectrum generation, etc., can solve problems such as reflection, image distortion, etc., to achieve the effect of convenient use

Active Publication Date: 2021-04-09
重庆盾银科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of reflection and image distortion when taking pictures of arc surface physical evidence, the present invention provides a full-spectrum forensic instrument and evidence collection method for arc surface evidence

Method used

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  • A full-spectrum forensics instrument and forensics method for curved surface forensics
  • A full-spectrum forensics instrument and forensics method for curved surface forensics
  • A full-spectrum forensics instrument and forensics method for curved surface forensics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]A full light spectrum tester for arc-oriented, including: full-spectral camera, light source unit, and adjustment portion.

[0048]Full spectral camera (such asfigure 1 ,figure 2 As shown, it is used to acquire full-spectral light and image, and the full-spectral camera includes a camera body 10, a lens 12, and a display screen 13, and the lens 12 is fixed to the front of the camera body 10, and the display screen 13 is rotated on the camera body 10, can Follow up and down (selected in other preferred embodiments).

[0049]The light source portion includes a parallel light source 14 and a side light source 15 for transmitting a particular spectral light coaxial with the optical axis of the full spectral camera, and the side light source 15 is used to flexibly adjust the angle between the full-spectral camera according to the user needs. Transmit a specific spectral light. Specifically, the parallel light source 14 includes a circular parallel substrate, a short-wave ultraviolet ligh...

Embodiment 2

[0068]Different from Example 1, the difference is only that the adjustment unit includes a stage 20, a rotary arm, and a servo motor 21, and the servo motor 21 is fixed to the stage 20, and one end of the rotary arm is connected to the stage 20. Servo motor 21 drives the rotating arm winding equipment 20 to rotate (egFigure 8As shown, the other end of the rotating arm is provided with a clamping member that can be fixed to the fixed camera body 10, and the clamping member is specifically in the form of a clamp in the clip-related product similar to the mobile bracket. Of course, the clamping member can also be detachable by a fixed manner such as thread or bolt or the like without being limited. The finite rod 22 is also provided on the stage 20.

[0069]In this way, the stability of the camera body 10 can be ensured. In actual use, portability is lowered.

Embodiment 3

[0071]Different from Example 1, the difference is only that the present embodiment is only for the arcues left on the rule of the cylinder, and the adjustment unit further includes a diameter detection module for detecting a diameter of an arc facade. And feedback to the control sub-module, the control sub-module controls the speed of the stage 20 according to the diameter of the arc surface. Specifically, the diameter detection module is a photosensor (reflective or induction, the reflection requires the transmitter, the induction is the direct induction light intensity), and the photosensor is evenly formed in the upper surface of the stage 20 to form three. Parallel detection lines (in the center of the center of the stage 20 are center, the starting point of the three detection lines extends outwardly from the center), when the arc surface is placed on the stage 20, the control sub-module is passed by the calculation of the photosensor The number of occlves can be seen from the ...

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PUM

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Abstract

The present invention relates to the technical field of trace extraction, in particular to a full-spectrum forensics instrument for arc surface forensics, including: a full-spectrum camera, which is used to collect and image full-spectrum light; a light source unit, which includes parallel light sources and Side light source, parallel light source is used to emit specific spectrum light parallel to the optical axis of the full-spectrum camera. It is used to store arc evidence and cooperate with the full-spectrum camera to continuously adjust the angle between the arc evidence and the light source. The full-spectrum camera is also used to process the acquired arc evidence image to obtain the arc flattening map. The invention aims at the problems of reflection and image distortion when taking pictures of arc surface physical evidence. The invention also discloses a full-spectrum forensic method for arc surface forensics.

Description

Technical field[0001]The present invention relates to the field of traces extraction, and more particularly to a full-spectrum apparatus and a forensic approach to an arc forefill.Background technique[0002]The subject certificate (containing the camera, camera light source, etc.) is an important equipment for the identification of the material certificate to further carry out traces appraisal. The photographic equipment can be evolved on the traces of the complex geometry objects, and provides the basis for solving the case, the final case, so that the subject's license equipment plays an important role in the trial of criminal, civil and other cases.[0003]The case is a variety of cases, which means that criminal technology police should prepare a variety of situations in the scene when they are in the scene, and in many cases, the potential traces of the object surface will not be imaged in the surface, so they face more Investigation site, technicians need more technical means dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28G01J3/12
Inventor 赖德渝刘彦但青松李红卫王成忠马元元鲍洪波陈恩
Owner 重庆盾银科技有限公司