›› 2013, Vol. 26 ›› Issue (10): 70-.

• Articles • Previous Articles     Next Articles

Fisheye Image Correction Method Based on Gradient Equation

WANG Yizhuo,XI Zhihong   

  1. (College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)
  • Online:2013-10-15 Published:2013-10-23


The fisheye lens is widely used in many fields because of the characteristics of short focus and wide field of view,but with serious image distortion.In order to solve this problem,we propose a correction algorithm of image gradient equation based on the latitude and longitude mapping model.The relationship between latitude and mapping model is derived,the equation between fisheye images before and after correction coordinates are extracted,and then the gradient equation is introduced for image correction.The experimental results show that the algorithm has good correction effect.

Key words: fisheye lens;short focus;wide field of view;image distortion;gradation property correction

CLC Number: 

  • TP391.41