期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2003
卷号：13
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：The resolution increase of the laser-scanning technique within the last few years enables on modeling of terrain discontinuities considering only discrete information. In the paper there has been presented the method of surface approximation which was a solution of variational principle (generalization of the snakes technique) where the internal – and external energy of surface describing the data defect are minimized. The internal energy describes an inclination and tension of surface and presents a sum of gradient and curvature components. Particular components of internal energy have been weighted by the use of free parameters enabling a modeling of geometrical properties of surface. The variational problem has been solved by the use of the Ritz method with the base Gaussian-type function. Parameters of modeled surface are obtained by solving the linear equations system. Furthermore,a modeling example of laser-scanning data has been presented.
其他摘要：Wzrost rozdzielczości techniki skaningu laserowego w ostatnich latach pozwala na modelowanie linii nieciągłości powierzchni terenu na podstawie informacji punktowej. W pracy przedstawiono metodę aproksymacji powierzchni będącą rozwiązaniem zadania wariacy
