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.
作者
杨前华
李尤
赵力
YANG Qianhua;LI You;ZHAO Li(Communication Institute of Nanjing College of Information Technology Communication Institute,Nanjing 210023,China;School of Information Science and Engineering of Southeast University,Nanjing 210018,China)
出处
《电子器件》
CAS
北大核心
2019年第2期449-452,共4页
Chinese Journal of Electron Devices
基金
国家自然基金项目(61571106)
江苏高校品牌专业建设工程项目(PPZY2015A092)
江苏省"青蓝工程"骨干教师培养对象基金项目(苏教师[2017]15号)
南京信息职业技术学院基金项目(YK20180504)
关键词
鱼眼图像
球面投影模型
缩小系数
校正算法
fisheye image
spherical perspective projection model
shrinking coefficient
correction algorithm
作者简介
杨前华 (1982-),女,通信作者,副教授,硕士研究生,研究方向为图像处理与应用,yangqh@njcit.cn;赵力(1958-),男,江苏南京人,东南大学信息科学与工程学院教授,博士生导师,研究方向为信息与信号处理、图像与视频信息处理等。
