A Piecewise Correction Method for High-resolution Image of Wide-angle Lens

被引：0

作者：

Wu, Ruiqing ^{[1
]}

Wang, Lili ^{[1
]}

Cheng, Xiran ^{[2
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Engn, Chengdu 610054, Peoples R China

[2] Sichuan Normala Univ, Coll Geog & Resources Sci, Chengdu, Peoples R China

来源：

2013 6TH INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING (CISP), VOLS 1-3 | 2013年

关键词：

wide-angle lens; radial distortion; piecewise correction; distortion center; interpolation; NONMETRIC CALIBRATION; DISTORTION CORRECTION; CAMERA;

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper, we investigate the distortion features of high-resolution image from wide-angle lens, and propose a piecewise correction method based on the grid template. From the distorted image, the ideal and the distorted coordinates of the grid intersection are extracted to search the optimal distortion center. Subsequently, we piecewise map the ideal and distorted coordinate to obtain the distortion coefficients, and finally correct distorted images with nonlinear radial mapping and bilinear interpolation. This method uses a single template image to obtain the geometric optimal parameter without solving linear equations. Experimental results show that the correction method is effective and practically used in the radial distortion images of high-resolution wide-angle lens, and preserves the undistorted edge of image.

引用

页码：331 / 335

页数：5

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