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摘要：本发明公开了一种基于模糊效应的视觉可见光通信检测方法，包括以下步骤：采用开关键控方法作为发射端LED灯阵列的调制方案，为每个LED灯分配数据，通过改变脉冲宽度调节灯亮度，实现并行数据传输；应用高斯滤波器近似处理，使所有发光二极管发出的光产生漫射模糊效应；接收端使用高速图像传感器采集图像，列解基于光扩散的亮度值的卷积方程，将每个LED亮度值提取为像素值；接收端解码器基于得到的像素值还原原始亮度信息和调制数据。该发明通过考虑光漫射造成的模糊效应，图像传感器解调性得以提高，较传统的基于阈值的处理方法误码率更低，提高了对图像模糊的抵抗性，增强了视觉可见光通信检测的实用性，能在复杂情况下实现准确检测。
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Abstract： The invention discloses a visual visible light communication detection method based on blur effect, which comprises the following steps: an on-key control method is adopted as a modulation scheme of an LED lamp array at an emitting end, data is distributed for each LED lamp, the brightness of the lamp is adjusted by changing the pulse width, and parallel data transmission is realized; Gaussian filter approximation is used to make the light emitted by all LEDs produce diffuse ambiguity effect; the receiving end collects images by using a high-speed image sensor, solves the convolution equationof the brightness value based on the light diffusion, and extracts the brightness value of each LED as a pixel value; the receiver decoder restores the original luminance information and the modulateddata based on the obtained pixel values. The invention improves the demodulation of the image sensor by considering the blurring effect caused by light diffusion, has lower bit error rate than the traditional threshold-based processing method, improves the resistance to image blurring, enhances the practicability of visual visible light communication detection, and can realize accurate detectionunder complex conditions.
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申请人： 华南理工大学
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Applicant： UNIV SOUTH CHINA TECH
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地址： 510640 广东省广州市天河区********(隐藏)
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发明(设计)人： 文尚胜 黄谋潇 关伟鹏 陈洲楠 康亦琛 陈世桓 陈艺荣
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Inventor： WEN SHANGSHENG; HUANG MOUXIAO; GUAN WEIPENG; CHEN ZHOUNAN; KANG YICHEN; CHEN SHIHUAN; CHEN YIRONG
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主分类号： H04B10/116(2013.01)I
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分类号： H04B10/116(2013.01)I H04B10/516(2013.01)I
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