应用经纬映射的鱼眼图像校正设计方法

为了消除鱼眼镜头带来的形变，该文提出了一种应用经纬映射的鱼眼图像校正设计方法，推导了消除变形的数学依据，总结出一种不需要任何标定数据，快速的纠正等角鱼眼变形的算法。使用经纬映射图像的校正方法，可以把扭曲的半球鱼眼图像投射为普通照片的四方形状，也即通过投射降低图像的扭曲程度，在视觉上基本达到实用要求。

The Designing Methods of Fish-eye Distortion Correction UsingLatitude-longitude Projection

For correcting the distortion caused by fish-eye lens, this paper proposes fish-eye distortion correction methods using Latitude-longitude projection image. The paper deduces the mathematic basis of eliminating distortion, summarizes and proposes a efficient fish-eye image distortion correction algorithm without any marking data. The use of Latitude-longitude image correction method can reduce the distortion of image in the way of projecting the distorted hemispheric fish-eye images into square shape as general photos, which greatly satisfies the practical requests.