The Designing Methods of Fish-eye Distortion Correction Using Latitude-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.