电光与控制, 2015, 22 (8): 76, 网络出版: 2015-08-25
一种位置可调整的实时图像预畸变方法
A Method for Real-Time Image Pre-distortion with Adjustable Positions
畸变校正 图像处理 几何畸变 扭曲补偿 二维拟合 多项式近似法 distortion correction image processing geometric distortion warping compensation 2D-fitting polynomial approximation
摘要
图像几何畸变在大视场光学系统中非常普遍,对于高畸变率光学系统以及高分辨率图像的实时几何畸变校正成为一个技术难点.讨论了投影系统预畸变的模型,分析了光学系统的畸变特性,提出了一种预畸变图形显示位置可调整的几何畸变校正方法,以及相应的可实时实现双三次插值算法的硬件架构.该方法的优点是工程应用可行性高,畸变校正的结果更精确且显示图像完整.
Abstract
The images generated by large field-of-view (FOV) optical equipment usually have geometric distortion.It is difficult to make geometric distortion correction in real time for images with high resolution and serious distortion.Based on the model of project system with pre-distortion and the distortion features of large FOV optical system,we proposed a pre-distortion method with the position of the pre-distorted image being adjustable.The corresponding hardware architecture is also proposed for realizing bicubic interpolation calculation.The experiment results show that the proposed method is easy for engineering application and is accurate in distortion correction.
郑永瑞, 林秋华, 王全忠, 武静. 一种位置可调整的实时图像预畸变方法[J]. 电光与控制, 2015, 22(8): 76. ZHENG Yong-rui, LIN Qiu-hua, WANG Quan-zhong, WU Jing. A Method for Real-Time Image Pre-distortion with Adjustable Positions[J]. Electronics Optics & Control, 2015, 22(8): 76.
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