【摘要】 精确提取光条纹中心是实现高精度线结构光视觉测量的关键。针对噪声和光条纹断线对提取精度的影响,提出了一种基于可变形模型的光条纹中心提取方法。模型采用可变形B样条曲线,在内能和图像势能的共同作用下发生变形逼近光条纹中心。用有限元法对模型进行求解,在内能和图像势能总能量极小时,获得准确的光条纹中心。理论分析表明,该方法可实现光条纹中心的亚像素级提取。更多还原

【Abstract】 Accurately extracting the centre of light stripe is the key of high precision linear-structured light video measurement.A new method based on deformable model was proposed with aiming at the influence of noise and broken lines.The model,that is a deformable B-spline curve,is deformably operated by internal energy and external energy.The sub-pixel center of light stripe can be found when energy is minimized by FEM.The proposed approach extracts strips central points at subpixel accuracy successfully.更多还原