Track inspection device based on color separation photography and track inspection method thereof

Abstract

The invention relates to a trace inspection device based on color separation photography and a trace inspection method thereof. The device comprises a frame, wherein a moving platform is arranged at the top of the frame, and an objective table is arranged in the frame; the device further comprises a transverse moving driving device for driving the moving platform to move left and right, a longitudinal moving driving device for driving the objective table to move front and back and a lifting driving device for driving the objective table to move up and down. The bottom of the mobile platform is provided with a rotating device, the center of the bottom of the rotating device is provided with a shooting device used for acquiring inspection images, the edge of the rotating device is provided with two multi-band light source devices used for continuously outputting or discretely outputting monochromatic light sources, and the two multi-band light source devices are arranged at an interval of 180 degrees in the circumferential direction; the device also comprises a controller, and the transverse movement driving device, the longitudinal movement driving device, the lifting driving device, the rotating device, the shooting device and the two multi-band light source devices are all connected with the controller. The device is reasonable in structural design, high in inspection capability and high in inspection precision.

Description

technical field [0001] The invention belongs to the technical field of trace inspection, and in particular relates to a trace inspection device and a trace inspection method based on color separation photography. Background technique [0002] Trace inspection is the use of criminal science and technology to discover, extract, analyze, test and identify various traces and evidence left by criminals on the scene of the case, and provide clues and evidence for the investigation and solution of the case. Trace inspection includes inspection of fingerprints, footprints, tool traces, bullet traces, tooth traces, wheel traces, livestock hoof traces and contact separation traces, etc. For the obtained trace samples, how to accurately obtain the trace details on the trace samples is particularly critical for obtaining accurate sign information. [0003] With the development of technology, in the prior art, there is already a device for obtaining trace details by taking pictures of t...

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the above-mentioned inspection device and inspection method are: although the shadow formed by the traces under the incident light irradiation can be reduced to a small size, its single-side illumination will still bring a certain degree of shadow; for traces on objects with complex background types , the light distribution angle of the dark field will cause part of the background reflected light to enter the lens to form interference; the best illumination light source cannot be selected for the color background; the imaging effect of a single angle cannot show the detailed sign information of the trace to the greatest extent

[0005] The above-mentioned defects of existing inspection devices and inspection methods lead to weak inspection ability and low inspection accuracy of trace details on trace inspection materials, which affects the current activities such as criminal investigations that use trace inspection as the main scientific and technological means

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