结构光光条中心亚像素快速提取方法  

Fast and sub-pixel extraction method for structured light stripe center

作　　者：魏振忠[1] 曹黎俊[1] 张广军[1] 

机构地区：[1]北京航空航天大学精密光机电一体化技术教育部重点实验室,北京100191

出　　处：《光电子．激光》2009年第12期1631-1634,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(50875014);教育部新世纪优秀人才资助项目(NCET-07-0043);北京市自然科学基金资助项目(3092014)

摘　　要：为准确获得结构光光条图像的光条中心,提出了一种新的光条中心亚像素提取方法。该方法通过光条截面能量中心和光条法线方向的迭代计算,实现了光条中心的亚像素精度快速提取。仿真实验结果表明,对于768×576piexl的图像,在噪声水平σ=36时,光条提取精度达到0.12piexi像素,光条提取速度约6.5ms。In order to obtain central points of structured light stripes in image,a novel algorithm to extract sub-pixel center points of stripe is proposed.The algorithm realizes fast extraction for sub-pixel central points in light stripe through a repeating operation which involves calculating the center of one-dimensional stripe and the normal of stripe.The simulation results indicate that the proposed algorithm is very fast and quite accurate,since the accuracy is up to 0.12 pixel when the noise level σ equals 36 and the processing time is only about 6.5 milliseconds when the resolving power of image is 768×576.

关 键 词：图像处理 光条 亚像素提取 机器视觉 

分 类 号：TN911.73[电子电信—通信与信息系统]