一种新的SLM显微立体视觉畸变矫正模型  

New distortion correction model for micro-stereovision based on stereo-light microscope

作　　者：王跃宗[1] 刘京会[2] 李德胜[1] 刘冲[3] 王立鼎[3] 

机构地区：[1]北京工业大学机电学院,北京100022 [2]石家庄经济学院,河北石家庄050031 [3]大连理工大学机械工程学院,辽宁大连116024

出　　处：《光电工程》2005年第6期72-75,共4页Opto-Electronic Engineering

基　　金：国家863计划MEMS重大专项;北京工业大学基金资助(97001999200401;52001999200401)

摘　　要：提出了一种描述SLM(Stereolightmicroscope)显微立体视觉成像的新模型,使用了新物理量“弱视差”来提高模型的三维微观定位精度。新模型考虑了信号滞后、径向、偏心和薄透镜等四种畸变,建立了精确的畸变矫正模型。在畸变参数标定中,采用了显著性检验和相关性检验两种方法,动态检测畸变参数对模型的影响程度。实验中对14个畸变参数的显著性进行分析,其中5个低于水平0.05的临界值,表现不显著,说明显著性检验对畸变参数的选择具有一定的意义。A new model for describing micro-stereovision imaging with stereo-light microscope is proposed. A new physical term, named weak parallax is used to improve 3-D micro-positioning accuracy of the model. On account of four distortions such as signal lag, radial distortion, eccentric distortion and thin lens, etc. a precision distortion correction model is established. For the calibration course of these distortion coefficients, two methods namely the notability check and the correlation check are used to observe dynamically how these distortions affect the model. The analysis of the notability of fourteen distortion coefficients says that there are five coefficients lower than the critical value of the level 0.05, which shows that notability and correlation check means the optimization of the vision model.

关 键 词：弱视差 光学体视显微镜 畸变校正 显微立体视觉 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O434.1[自动化与计算机技术—计算机科学与技术]