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A retroreflector image detection method and system capable of resisting environmental illumination interference

A retro-reflector, image detection technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as difficult detection accuracy, and achieve the effect of ensuring accuracy

Inactive Publication Date: 2019-05-03
合肥锟特奇科技有限公司
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  • Application Information

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Problems solved by technology

In the above two cases, it is difficult to guarantee the accuracy of the detection

Method used

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  • A retroreflector image detection method and system capable of resisting environmental illumination interference
  • A retroreflector image detection method and system capable of resisting environmental illumination interference
  • A retroreflector image detection method and system capable of resisting environmental illumination interference

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, other embodiments in the drawings and other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.

[0046] Specifically, such as figure 1 and figure 2 As shown, the anti-environment light interference retroreflector image detection method includes:

[0047] Step 1. Use the cooperative light source 1 to irradiate the region 6 to be detected along the angle N; use the modulation signal output by the modulation unit 3 to amplitude modulate the radiation power of the cooperative light source 1, and the radiation power of the cooperative ligh...

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Abstract

The invention provides a retroreflector image detection method and a retroreflector image detection system capable of resisting environmental illumination interference. The method comprises the following steps: step 1, irradiating a to-be-detected area along an angle N through a cooperative light source; conducting amplitude modulation on the radiation power of the cooperative light source throughthe modulation signal output by the modulation unit, wherein the radiation power of the cooperative light source changes along with time; the time when the radiation power of the cooperative light source reaches the peak power Pp is the peak time tp, and the time when the radiation power of the cooperative light source reaches the valley power Pv is the valley time tv; Step 2, respectively acquiring a bright gray level image and a dark gray level image of the to-be-detected area from the angle N at tp and tv moments through a visual unit; the modulation unit is in communication connection with the visual unit; and step 3, processing and analyzing the bright gray level image and the dark gray level image by using a visual unit, and detecting the retroreflector in the to-be-detected area. According to the detection method and system, the retroreflector image detection accuracy can be ensured under the condition of environmental illumination interference.

Description

technical field [0001] The invention relates to the field of optical image detection, in particular to a retroreflector image detection method and system that are resistant to environmental light interference. Background technique [0002] When light hits the interface between two media, part of the light changes its propagation direction and returns to the original medium to continue to propagate. This phenomenon is called light reflection. In nature, there are three reflection phenomena of light: diffuse reflection, specular reflection and retroreflection. Diffuse reflection occurs when light is incident on a rough surface. The rough surface causes the incident light to diverge in all directions, and only a small part of the light can be reflected back to the direction of the light source. Specular reflection occurs when light is incident on a very smooth or shiny surface, and the light reflects off the surface at the same angle as the incident angle, but in the opposite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/136G06T7/00
Inventor 王一程
Owner 合肥锟特奇科技有限公司
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