基于彩色二维条码流的Display-to-Camera通信系统

摘要

In order to meet diversified communication needs of the people and build a reliable low-cost communica-tion link,we establish a novel display-to-camera communication system using display screen and photographic equipments in daily life.We build the system model and expound the transceiver’s implementation framework,then design a colorful 2D code streaming consistent with the display screen properties for carrying information.Employ computer image processing technology to match,recognize and track the signal area,filter the background noise.Utilize frame classification and color enhancement technology to suppress the inter symbol interference.The system’s data transfer rate is 287 kbit/s and the deco-ding accuracy rate is 99.8%.%为了满足人们的多元化通信需求，构建可靠的低成本通信链路，本文利用日常生活中的屏幕显示设备和照相摄像设备，构建了新型Display-to-Camera通信系统．描述了系统基本链路并建立系统模型，阐述了收发机实现框架和关键技术；搭建实验系统，设计了符合显示屏显示特性的新型彩色条码流，用以承载信息；接收端利用计算机图像处理技术，匹配、跟踪识别信号区域，过滤系统背景噪声；利用帧分类和颜色增强技术抑制了系统符号间干扰，保证了彩色条码的正确识别．实验系统实现了速率287kbit／s的数据传输，解码正确率99.8％．