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ITS-LVC information source detection method based on region matching algorithm

A detection method and region matching technology, applied in computing, computer parts, image data processing, etc., can solve the problems of false positives, missing, false negatives, etc., and achieve the effect of improving accuracy, high source detection, and high robustness

Active Publication Date: 2018-11-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is extremely susceptible to the impact of moving vehicle vibrations, the accuracy of the source detection results is relatively low, and it is prone to false negatives (missing target LED arrays) and false positives (misidentifying non-target LED arrays as target LED arrays) LED array)

Method used

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  • ITS-LVC information source detection method based on region matching algorithm
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  • ITS-LVC information source detection method based on region matching algorithm

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Embodiment

[0049] as attached figure 1As shown, the present embodiment discloses an ITS-VLC source detection method based on a region matching algorithm, comprising the following steps:

[0050] S1. The transmitting end modulates LED lighting templates with different illuminances according to the input data, and emits an optical signal in the form of a two-dimensional LED template.

[0051] In specific application implementation, the step S1 includes the following steps:

[0052] S101. The encoder performs channel encoding on the input data;

[0053] S102, the inverted LED template insertion unit at the transmitting end generates an inverted signal for tracking the LED array, and transmits it to the pulse width modulator;

[0054] S103. The pulse width modulator modulates the signal into LED lighting templates with different illuminances;

[0055] S104. Finally, the pulse width modulation signal is converted into a two-dimensional signal, and after the luminosity of each LED is indivi...

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Abstract

The invention discloses an ITS-LVC information source detection method based on a region matching algorithm. The ITS-LVC information source detection method is a visible light communication (VLC) process of an intelligent traffic system (ITS) based on a transmitting end and a receiving end; the transmitting end comprises a multi-LED array in the infrastructure of the intelligent traffic system andthe vehicle-mounted multi-LED array; the receiving end comprises the vehicle-mounted high-speed image sensor of the intelligent traffic system; the information source detection method is a new multi-LED array collection method based on the region matching algorithm, wherein the region matching algorithm is used for searching a corresponding location between two continuous frames. Based on the multi-LED array and the high-speed image sensor disclosed by the invention, the accuracy and the robustness of the information source detection result are effectively improved by adopting the ITS-VLC information source detection method based on the region matching algorithm, and the method has extensive application prospect.

Description

technical field [0001] The invention relates to the technical fields of intelligent traffic systems and visible light communication, in particular to an ITS-VLC signal source detection method based on an area matching algorithm. Background technique [0002] In recent years, LED (Light Emitting Diode) has become a new revolutionary light source with many advantages, such as energy saving, long life and good visibility. In addition, the luminous intensity of LEDs can be controlled at a high speed that is imperceptible to the human eye. Based on the above advantages, the communication field has begun to use LEDs to realize visible light communication (VLC). Visible light communication is a new environmentally friendly wireless optical communication technology that can not only provide lighting, but also transmit data for communication. [0003] The widespread use of LED lights in transportation equipment and the growing interest in intelligent transportation systems (ITS) pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116G06T7/246G06K9/62
CPCH04B10/116G06T7/246G06V10/751
Inventor 文尚胜江佳佳关伟鹏陈昕李竞宜刘梓璇
Owner SOUTH CHINA UNIV OF TECH