摘要
针对圆柱坐标下多孔径拼接技术中坐标变换方程求解复杂,使得圆柱坐标系下的多孔径拼接困难的问题,采用粒子群算法来求解非线性方程组,将非线性方程组转化为优化问题求解,建立了求解拼接参数的目标函数,在保证求解精度的同时,大大简化了求解过程的复杂性。通过计算机模拟测量了一圆柱体面形,拼接误差达到10-10mm,验证了其收敛性和精确性,最后采用数字全息中倾斜光照明方法获得螺母的轮廓进行了拼接,证明了这种算法对回转类物体的测量是切实有效的。
In order to solve the problem of complex coordinate transformation equation in the multi-aperture stitc-hing technique in cylindrical coordinates,which makes the multi-aperture stitching in cylindrical coordinate systems difficult,Particle Swarm Optimization(PSO)is used to solve the nonlinear equations,and the nonlinear equations are converted into optimization problems.Not only the calculation is fast and greatly simplifies the complexity of the solu-tion process.A cylindrical surface shape is measured by computer simulation to verify its convergence and accuracy,and the stitching error reaches 10-10 mm.Finally,the contour of nuts obtained by tilt illumination method in digital ho-lography is mosaic,which proves that this algorithm is effective for the measurement of rotating objects.
作者
税云秀
胡琳
戴姚辉
吴海钰
杨岩
朱岗
SHUI Yunxiu;HU Lin;DAI Yaohui;WU Haiyu;YANG Yan;ZHU Gang(College of Mechanical Engineering,Chongqing University of Technology,Chongqing 400054,China)
出处
《激光杂志》
北大核心
2019年第11期42-48,共7页
Laser Journal
基金
国家自然基金(No.11272368)
重庆市教委科学技术研究项目(No.KJ1600929)
重庆理工大学研究生创新基金(No.ycx2018215)
关键词
数字全息
圆柱坐标
多孔径拼接
粒子群算法
倾斜照明光
digital holography
cylindrical coordinates
multi-aperture stitching
particle swarm algorithm
tilted illumination