公垂线法双目立体视觉三维重建  

Common perpendicular 3D reconstruction of binocular stereo vision

作　　者：张芝贤[1] 程继坤[1] 武旭娟[1] 

机构地区：[1]沈阳航空航天大学电子与通信工程学院,辽宁沈阳110136

出　　处：《微型机与应用》2017年第4期80-83,共4页Microcomputer & Its Applications

摘　　要：双目立体视觉测量系统是工业测量中的重要手段,三维重建是双目立体视觉测量体统中非常重要的一环。基于视差原理的传统三维重建模型是对双目立体视觉系统的一种理想化抽象。通过分析由平面到三维点的实际映射过程,提出了一种更加符合实际数据的三维重建模型,异面直线公垂线三维重建方法。该方法通过计算两摄像机光心与其各自像点构成的两条空间直线的公垂线,即两条异面直线的最小距离点来定位三维空间点,且其最小距离参数可有效判断误匹配点。通过实验对该方法进行了验证。结果表明该方法可达到传统视觉三维重建方法的测量精度,并可有效判断匹配点是否为误匹配点。The binocular stereo vision system is an important way of industrial measurement. 3D reconstruction is a very important part of binoc- ular stereo vision measurement. The traditional reconstruction model based on the principle of parallax is an idealized abstraction of binocular stereo vision system. By analyzing the actual mapping process from the image plane to the 3D point, the paper proposes a model which accords with the 3D reconstruction of the actual data more precision . This reconstruction method uses the common perpendicular of space straight line to calculate 3I） point. By calculating the camera＇s optical center point and the respective image points in a world coordinate system, we can acquire two space straight line and then we can calculate the common perpendicular and the distance parameter. The distance parameter can be used as an index to judge the error matching point. Experiments results show that the method can achieve the precision the same as the tradi- tional reconstruction method, and in this way we can judge error matching points effectively.

关 键 词：双目立体视觉测量 异面直线公垂线 误匹配点 三维立体重构 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]