title: Sagittal and meridional radii of curvature for a surface with symmetry of revolution by using a null-screen testing method.
abstract: An algorithm to compute the sagittal and meridional radii of curvature for a surface of revolution is presented. The sagittal radius is obtained from the surface normal, and the meridional radius is calculated from a function fitted to the derivative of the sagittal curvature by using the surface-normals raw data. A calibration spherical surface is tested by using the null-screen testing method. Experimental results of the spherical surface show that the sagittal and meridional radii of curvature differ by 2.600% and 2.604%, respectively, with respect to the actual radius of the calibration spherical surface.
authors: Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Mexico. amilcar.estrada@ccadet.unam.mx
authors: Amilcar
authors: A
authors: Estrada-Molina
authors: Manuel
authors: M
authors: Campos-García
authors: Rufino
authors: R
authors: Díaz-Uribe