基于改进球面投影模型的鱼眼图像校正算法的研究
|
摘要
鱼眼镜头视角广,但鱼眼图像存在严重的桶形畸变,要使用鱼眼图像的信息就需要对鱼眼图像进行校正。球面透视投影模型的鱼眼图像校正算法原理简单、实现方便,且视觉效果改善显著,但存在丢失鱼眼图像周边物景的问题。针对此问题,提出了一种改进算法,通过引入系数来量化选定的缩小区域,再予以加权算法,有效保留图像所有信息,提高了校正图像的质量。实验结果表明在不增加算法运行时间前提下,改进算法能够有效改善鱼眼图像校正效果,有较强的实用价值。
The fish-eye lens can get a wide angle of view,but the fish-eye camera has a very serious distortion. The distortion images need to be corrected to use the information of the fish-eye images. The fish eye image correction algorithm based on spherical perspective projection model is simple and easy to implement,and the visual effect is improved significantly. But there is a problem of losing the surrounding scenery of the fish eye image. In order to solve this problem,an improved algorithm is proposed,which quantifies the selected reduced area by shrinking coefficients,and then gives the weighted algorithm,which effectively preserves all the information of the image and improves the quality of the corrected image. The experimental results show that the improved algorithm can effectively improve the correction effect of fish eye image without increasing the operation time of the algorithm,and it has great value for application.
The fish-eye lens can get a wide angle of view,but the fish-eye camera has a very serious distortion. The distortion images need to be corrected to use the information of the fish-eye images. The fish eye image correction algorithm based on spherical perspective projection model is simple and easy to implement,and the visual effect is improved significantly. But there is a problem of losing the surrounding scenery of the fish eye image. In order to solve this problem,an improved algorithm is proposed,which quantifies the selected reduced area by shrinking coefficients,and then gives the weighted algorithm,which effectively preserves all the information of the image and improves the quality of the corrected image. The experimental results show that the improved algorithm can effectively improve the correction effect of fish eye image without increasing the operation time of the algorithm,and it has great value for application.
引文
[1] 魏利胜,周圣文,张平改,等.基于双经度模型的鱼眼图像畸变矫正方法[J].仪器仪表学报,2015,36(2):377-385.
[2] 赵瑞,郝书珍.一种大视角鱼眼图像校正算法的实现[J].河北农业大学学报,2014,37(3):106-110.
[3] 祝海江,徐晓波,周靖林.基于球面透视投影旋转矩阵的鱼眼图像匹配[J].光学学报,2013,33(2):0215001.
[4] Kannala J,Brandt S S.A Generic Camera Model and Calibration Method for Conventional,Wide-Angle,and Fish-Eye Lenses[J].IEEE Transactions Pattern Analysis and Machine Intelligence,2006,28(8):1335-1340.
[5] Hughes C,Denny P,Glavin M.Equidistant Fish-Eye Calibration an Rectification by Vanishing Point Extraction[J].IEEE TransactionsPattern Analysis and Machine Intelligence,2010,32(12):2289-2296.
[6] 霍薇薇,王作栋,高萌萌,等.基于坐标投影的鱼眼图像校正方法研究[J].电子测量技术,2014,37(5):25-28.
[7] Hou Wenguang,Ding Mingyue,Qin Nannan,et al.Ditital Deformation Model for Fisheye Image Rectification[J].Optics Express,2012,20(20):22252-22261.
[8] 马朋飞,穆春阳,马行,等.基于动态圆的鱼眼图像校正算法研究[J].科学技术与工程,2017,17(7):101-105.
[9] 王益平,杨鸣,周芳,等.基于最小二乘法的鱼眼图像矫正算法[J].激光杂志,2017,38(2):77-81.
[10] 宋阳,周亚丽,张奇志.鱼眼镜头径向畸变的校正方法[J].仪器仪表学报,2017,38(4):1014-1023.
[11] 唐俊,赵为明,谷峰.基于鱼眼图像的全景漫游模型[J].微机发展,2003,13(2):69-70.
[12] 陈显毅.图像配准技术及其MATLAB编程实现[M].北京:电子工业出版社,2009:178-185.
[2] 赵瑞,郝书珍.一种大视角鱼眼图像校正算法的实现[J].河北农业大学学报,2014,37(3):106-110.
[3] 祝海江,徐晓波,周靖林.基于球面透视投影旋转矩阵的鱼眼图像匹配[J].光学学报,2013,33(2):0215001.
[4] Kannala J,Brandt S S.A Generic Camera Model and Calibration Method for Conventional,Wide-Angle,and Fish-Eye Lenses[J].IEEE Transactions Pattern Analysis and Machine Intelligence,2006,28(8):1335-1340.
[5] Hughes C,Denny P,Glavin M.Equidistant Fish-Eye Calibration an Rectification by Vanishing Point Extraction[J].IEEE TransactionsPattern Analysis and Machine Intelligence,2010,32(12):2289-2296.
[6] 霍薇薇,王作栋,高萌萌,等.基于坐标投影的鱼眼图像校正方法研究[J].电子测量技术,2014,37(5):25-28.
[7] Hou Wenguang,Ding Mingyue,Qin Nannan,et al.Ditital Deformation Model for Fisheye Image Rectification[J].Optics Express,2012,20(20):22252-22261.
[8] 马朋飞,穆春阳,马行,等.基于动态圆的鱼眼图像校正算法研究[J].科学技术与工程,2017,17(7):101-105.
[9] 王益平,杨鸣,周芳,等.基于最小二乘法的鱼眼图像矫正算法[J].激光杂志,2017,38(2):77-81.
[10] 宋阳,周亚丽,张奇志.鱼眼镜头径向畸变的校正方法[J].仪器仪表学报,2017,38(4):1014-1023.
[11] 唐俊,赵为明,谷峰.基于鱼眼图像的全景漫游模型[J].微机发展,2003,13(2):69-70.
[12] 陈显毅.图像配准技术及其MATLAB编程实现[M].北京:电子工业出版社,2009:178-185.