its-vlc source detection method based on region matching algorithm
A detection method and area matching technology, applied in computing, computer components, image analysis, etc., can solve problems such as loss, false negative, false positive, etc., and achieve high source detection, high robustness, and improved accuracy
Active Publication Date: 2019-11-15
SOUTH CHINA UNIV OF TECH
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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)
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[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 individually modulating the luminosi...
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The invention discloses an ITS-VLC source detection method based on an area matching algorithm. The ITS-VLC source detection method is based on the visible light communication (VLC) process of an intelligent transportation system (ITS) at a transmitter and a receiver. Including the multi-LED array in the infrastructure of the intelligent transportation system and the vehicle-mounted multi-LED array, the receiving end includes the vehicle-mounted high-speed image sensor of the intelligent transportation system. The source detection method is a new multi-LED array acquisition method based on an area matching algorithm, in which the area matching algorithm is used to find the corresponding position between two consecutive frames. The invention is based on a multi-LED array and a high-speed image sensor, adopts an ITS-VLC signal source detection method based on a region matching algorithm, effectively improves the accuracy and robustness of a signal source detection result, and has broad application prospects.
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...
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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