基于点云建模技术的导盲系统设计

DESIGN OF BLIND GUIDANCE SYSTEM BASED ON POINT CLOUD 3D MODELING TECHNOLOGY

摘要:

基于激光扫描的三维建模技术是机器视觉研究领域的重要课题，在许多学科领域都有有重要的理论和实用价值。传统的导盲系统主要分为两种类型，视觉辅助型系统和视觉替代型，这两种类型的导盲系统都存在过多依赖外界环境，如光照、距离、湿度、温度等，受客观条件影响较多。因此，提出基于激光建模技术的导盲系统，通过激光扫描仪采集路面的点云和纹理信息；运用修补算法和预处理算法，完善和简化点云信息，在可视化平台实时生成三维路况；微处理器S3C2440从经过处理的点云数据提取特征变量进行实时处理，对危险的路况进行语音报警。实验结果表明，外界环境对设计的干扰性较小，系统反馈平均耗时0.8s，具有一定的应用价值。

Abstract:

3D modeling technology based on laser scanning is an important topic in the field of machine vision research. It has important theoretical and practical value in many disciplines. Traditional guidance system is mainly divided into two types, visual assistant system and visual substitution system. Both of these two types of blind guidance system rely too much on the external environment, such as light, distance, humidity, temperature and so on.Both of them are affected by objective conditions obviously. Therefore, a blind guidance system based on laser modeling technology is proposed，The point cloud and texture information of road surface are collected by laser scannerr;This design use repair algorithm and preprocessing algorithm to improve and simplify the point cloud information ,and generate 3D road condition in real time on the visualization platform; Microprocessor S3C2440 process the characteristic variables in time which is extracted from the processed point cloud data , and makes voice alarm for dangerous road conditions . Experimental results show that the external environment has less interference to the design, and the average feedback time of the system is 0.8s, which has certain application value.