单幅圆形鱼眼图像的校正

doi:10.11772/j.issn.1001-9081.2015.05.1444

计算机应用 ›› 2015, Vol. 35 ›› Issue (5): 1444-1448.DOI: 10.11772/j.issn.1001-9081.2015.05.1444

单幅圆形鱼眼图像的校正

张军, 王志舟, 杨正瓴

天津大学电气与自动化工程学院, 天津 300072

收稿日期:2014-12-17 修回日期:2015-01-27 发布日期:2015-05-14 出版日期:2015-05-10
通讯作者: 王志舟
作者简介:张军(1964-),男,天津人,副教授,硕士,主要研究方向:智能交通系统、计算机视觉与图像处理; 王志舟(1991-),男,山西朔州人,硕士研究生,主要研究方向:数字图像处理; 杨正瓴(1964-),男,河北灵寿人,副教授,博士,主要研究方向:复杂时间序列预测、人工智能、混沌理论.
基金资助:
天津市创新基金资助项目(13ZXCXGX40500);天津市小巨人创新基金资助项目(2012-XJR21017).

Correction of single circular fisheye image

ZHANG Jun, WANG Zhizhou, YANG Zhengling

School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

Received:2014-12-17 Revised:2015-01-27 Online:2015-05-14 Published:2015-05-10

摘要/Abstract

摘要：

针对有效圆域提取不准确以及传统柱面投影校正法在垂直方向上校正视场角不能达到180°的问题,分别提出了变角度线扫描法和纵向压缩柱面投影校正法.前者通过不断改变扫描线的倾斜角来寻找切点坐标,并对无效切点进行滤除,然后使用Kasa圆拟合法求取有效圆域的参数.后者则对传统柱面投影的光路进行了人为的弯折,从而把投影到无穷远点的光线压缩回柱面上,保留了图像有效信息.通过与经纬映射校正法以及墨卡托投影法的实验处理结果对比,纵向压缩柱面投影法能弱化校正图像边缘的拉伸模糊效应,使处理结果更加自然.

关键词: 鱼眼图像, 校正, 变角度线扫描, 纵向压缩, 柱面投影

Abstract:

Focused on the issues that circular domain extraction is not accurate and effective correction field angle can not reach 180 degrees in the vertical direction, Variable Angle Line Scan (VALS) method and Longitudinal Compression Cylindrical Projection (LCCP) method were proposed respectively. By changing the inclination angle of the scan line, the VALS method got coordinates of those cut points, then it filtered out invalid cut points coordinates and further got the parameters of the circular domain by using the Kasa circle fitting method. As for the LCCP method, it artificially bended the optical path of traditional cylindrical projection so that the light projected onto the infinity point could be projected back on the cylindrical surface, thus preserved the image information effectively. The comparison with two known methods named longitude-latitude mapping and Mercator mapping proves the effectiveness of the proposed algorithm in weakening the blurring effect due to stretching caused by the edge of image correction. The result looks more nature.

Key words: fisheye image, correction, variable angle line scan, longitudinal compression, cylindrical projection

中图分类号:

TP391

张军, 王志舟, 杨正瓴. 单幅圆形鱼眼图像的校正[J]. 计算机应用, 2015, 35(5): 1444-1448.

ZHANG Jun, WANG Zhizhou, YANG Zhengling. Correction of single circular fisheye image[J]. Journal of Computer Applications, 2015, 35(5): 1444-1448.

参考文献

[1] SNYDER J P. Flattening the earth: two thousand years of map projections[M]. Chicago: University of Chicago Press, 1997: 263-266.
[2] ZORIN D, BARR A H. Correction of geometric perceptual distortions in pictures[C]// Proceedings of the 22nd Annual Conference on Computer Graphics and Interactive Techniques. New York: ACM, 1995: 257-264.
[3] ZELNIK-MANOR L, PETERS G, PERONA P. Squaring the circle in panoramas[C]// Proceedings of the 10th IEEE International Conference on Computer Vision. Piscataway: IEEE, 2005: 1292-1299.
[4] KOPF J, LISCHINSKI D, DEUSSEN O, et al. Locally adapted projections to reduce panorama distortions[J]. Computer Graphics Forum, 2009, 28(4): 1083-1089.
[5] SWAMINATHAN R, NAYAR S K. Nonmetric calibration of wide-angle lenses and polycameras[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2000, 22(10): 1172-1178.
[6] DEVERNAY F, FAUGERAS O. Straight lines have to be straight[J]. Machine Vision and Applications, 2001, 13(1): 14-24.
[7] KANNALA J, BRANDT S S. A generic camera model and calibration method for conventional, wide-angle, and fish-eye lenses[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2006, 28(8): 1335-1340.
[8] HARTLEY R, KANG S B. Parameter-free radial distortion correction with center of distortion estimation[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2007, 29(8): 1309-1321.
[9] YANG L, CHENG Y. The designing methods of fish-eye distortion correction using latitude-longitude projection[J]. Journal of Engineering Graphics, 2010(6): 19-22. (杨玲, 成运. 应用经纬映射的鱼眼图像校正设计方法[J]. 工程图学学报, 2010(6): 19-22.)
[10] YING X, HU Z. Fisheye lense distortion correction using spherical perspective projection constraint[J]. Chinese Journal of Computers, 2003, 26(12): 1702-1708. (英向华, 胡占义. 一种基于球面透视投影约束的鱼眼镜头校正方法[J]. 计算机学报, 2003, 26(12): 1702-1708.)
[11] WEI J, LI C, HU S, et al. Fisheye video correction[J]. IEEE Transactions on Visualization and Computer Graphics, 2012, 18(10): 1771-1783.
[12] CARROLL R, AGRAWALA M, AGARWALA A. Optimizing content-preserving projections for wide-angle images[J]. ACM Transactions on Graphics, 2009, 28(3): 43.
[13] WANG D, CUI H, CHEN J. Improvement of fisheye image edge extraction algorithm[J]. Computer Engineering and Design, 2007, 28(12): 2878-2880. (王大宇, 崔汉国, 陈军. 鱼眼图像轮廓提取及校正研究[J]. 计算机工程与设计, 2007, 28(12): 2878-2880.)
[14] TAUBIN G. Estimation of planar curves, surfaces, and nonplanar space curves defined by implicit equations with applications to edge and range image segmentation[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1991, 13(11): 1115-1138.
[15] PRATT V. Direct least-squares fitting of algebraic surfaces[J]. Computer Graphics, 1987, 21(4): 145-152.
[16] KASA I. A circle fitting procedure and its error analysis[J]. IEEE Transactions on Instrumentation and Measurement, 1976, 1001(1): 8-14.
[17] FLECK M M. Perspective projection: the wrong imaging model[R]. Iowa: University of Iowa, 1995: 1-27.

单幅圆形鱼眼图像的校正

Correction of single circular fisheye image

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

[1]	唐瑶瑶, 朱叶晨, 刘仰川, 高欣. CT图像环形伪影去除方法研究现状及展望[J]. 《计算机应用》唯一官方网站, 2024, 44(3): 890-900.
[2]	黄雨鑫, 黄贻望, 黄辉. 基于浅层网络预测的元标签校正方法[J]. 《计算机应用》唯一官方网站, 2024, 44(11): 3364-3370.
[3]	朱诚, 潘旭华, 张勇. 基于趋化校正的哈里斯鹰优化算法[J]. 《计算机应用》唯一官方网站, 2022, 42(4): 1186-1193.
[4]	王睿, 黄微, 胡南强. 基于全变分模型的多时相遥感影像厚云去除算法[J]. 计算机应用, 2020, 40(7): 2126-2130.
[5]	周思羽, 包国琦, 刘凯. 低通滤波下约束对数强度熵的图像渐晕校正[J]. 计算机应用, 2020, 40(6): 1812-1817.
[6]	林乐平, 李三凤, 欧阳宁. 基于多姿态特征融合生成对抗网络的人脸校正方法[J]. 计算机应用, 2020, 40(10): 2856-2862.
[7]	张雅静, 刘郁林, 张治中. LTE-A系统中物理随机接入信道信号检测的仿真与实现[J]. 计算机应用, 2018, 38(5): 1442-1446.
[8]	牛国臣, 袁婕, 谷润平. 嵌入式助航灯具定位系统设计与实现[J]. 计算机应用, 2018, 38(1): 290-294.
[9]	热孜万古丽·夏米西丁, 耿国华, 古丽松·那斯尔丁, 邓擎琼, 迪丽努尔·克依木, 祖丽皮亚·买买提明, 赵万荣, 郑磊. 基于边缘对应的三维颅骨自动非刚性配准方法[J]. 计算机应用, 2016, 36(11): 3196-3200.
[10]	陈珂吴建平. 内投式球幕投影系统的实现算法[J]. 计算机应用, 2014, 34(3): 810-814.
[11]	曾鹤杨宜民. 基于零力矩点预观控制的在线步态规划[J]. 计算机应用, 2014, 34(2): 514-518.
[12]	汪冬葛万成莫国民王云光. 基于参考标签可信度和偏差自校正的RFID室内定位算法[J]. 计算机应用, 2014, 34(11): 3170-3172.
[13]	刘超李醒飞郭敬滨谭文斌. 基于共线点的镜头畸变校正方法[J]. 计算机应用, 2013, 33(12): 3555-3558.
[14]	刘旭巫玲陈念年范勇段晶晶任新宇夏菁菁. 基于光栅投影序列图像融合的倾斜校正算法[J]. 计算机应用, 2013, 33(11): 3209-3212.
[15]	赵一丁李志民王洪利刘卫光楚纪正. 基于数据挖掘的仿真模型参数修正[J]. 计算机应用, 2013, 33(10): 2827-2831.