The new second-order single oriented partial differential equations for optical interferometry fringes with high density

被引：22

作者：

Tang, Chen ^{[1
]}

Yang, Na ^{[1
]}

Yan, Haiqing ^{[1
]}

Yan, Xiusheng ^{[2
]}

机构：

[1] Tianjin Univ, Dept Appl Phys, Tianjin 300072, Peoples R China

[2] Sci & Technol Photoelect Informat Safety Control, Yanjiao 605201, Hebei, Peoples R China

来源：

OPTICS AND LASERS IN ENGINEERING | 2013年 / 51卷 / 06期

关键词：

Optical interferometry fringes with high; density; Fringe analysis; Oriented partial differential equations; (PDE) filtering methods; Fringe orientation; SPECKLE-PATTERN INTERFEROMETRY; FILTERING METHODS; PERFORMANCE;

D O I：

10.1016/j.optlaseng.2013.01.010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It has been a challenging problem to de-noise and yet preserve all fringes perfectly especially for high density fringes in optical interferometry methods. In this paper, we present the new second-order single oriented partial differential equations (PDE) filtering models for optical interferometry fringes with high density based on the variational methods. We test the proposed models on two computer-simulated and two experimentally obtained fringe patterns, respectively that include the regions with high fringe density, and compare our models with related PDE models. The experimental results have demonstrated that the proposed filter performs well in noise suppression and fringe preservation even for the regions with very high density. The proposed single oriented PDE models can be extended to automatically other double oriented or couple oriented PDE models. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：707 / 715

页数：9