单目视觉目标距离测量方法研究  

Measurement Method to Object Distances by Monocular Vision

作　　者：张法全[1,2] 路立平[1] 沈满德[2] 陈良益[2] 崔光照[1] 

机构地区：[1]郑州轻工业学院电气信息工程学院,郑州450002 [2]中国科学院西安光学精密机械研究所,西安710119

出　　处：《光子学报》2009年第2期453-456,共4页Acta Photonica Sinica

基　　金：中国科学院知识创新工程国防创新重大基金;郑州轻工业学院博士基金资助

摘　　要：提出了一种利用单目视觉测量目标距离的方法.当目标与光学系统的距离变化时,其共轭像面的位置也发生相应的变化,而摄像头的CCD是固定的,因此在CCD上得到的是模糊度不同的图像.利用小波变换对得到的图像进行处理,检测模糊图像边缘的宽度,再利用三次样条插值运算计算出目标至光学系统的实际距离.实验结果表明该方法是可行的.A method to measure object distance by monocular vision was proposed. Position of one object＇s conjugate image plane varied when the distance between it and the optical system was changed. The image on CCD was out of focus as a result of fixed CCD in cameras. Blur extent of images was scaled by width of image edge. Images were processed by wavelet transform and widths of blurred image edge were detected. Real distance between object and optical system was calculated through cubic spline interpolation. The measurement method to object distance by monocular vision was realized. Results show that the method is feasible.

关 键 词：图像处理 单目测距 边缘提取 模糊度 小波变换 样条插值 

分 类 号：TP242.62[自动化与计算机技术—检测技术与自动化装置] TP242.6[自动化与计算机技术—控制科学与工程]