Research And Implementation Of Fisheye Lens Correction Algorithm Based On Bilinear Interpolation

Wide angle fisheye lens to meet the monitoring applications and broad vision of the demand,has important application in real life,but the distortion of fisheye images but in practical application,it is not convenient,the classification and analysis of scene through pattern recognition and artificial intelligence methods,since strengthen analysis and image the scene understanding,in 1960 s,the field of machine learning analysis there are many research achievements in image,with image processing and other research contents closely related to image analysis,and overlapped.Therefore,it is necessary to correct the distortion of fisheye lens,this paper mainly researches the fisheye correction algorithm based on bilinear interpolation,the first step of this paper mainly expounds the research background,research purpose,research significance,literature review and related research on fisheye image distortion and correction,and then a brief overview of the main research contents the.And then explains the structure and working principle of fisheye lens and fisheye lens optical characteristic analysis,fisheye image processing,briefly discusses the difficulties in design and design ideas of fisheye lens.To analyze the distortion model of fisheye lens,the radial and other aberrations,mainly on Projective Invariance and spherical coordinate orientation correction algorithm,polynomial fitting approximate deformation equation correction algorithm,spherical perspective projection correction algorithm,parabolic projection correction algorithm is analyzed and simulated with the body.Analysis of the calibration method of fisheye lens,focusing on the zhangzhengyou calibration method and two calibration method of camera based on focus,and optimize the parameters related to.Using the fitting formula expressed radial distortion,for calibration,camera distortion coefficient.Finally,study the classic camera calibration method: the zhangzhengyou calibration: this method has the advantages of traditional calibration precision and self calibration is simple,used in various fields,this paper explains the principle of this method,and the calibration method of the finally,based on the fisheye camera,interpolation correction method,this paper puts forward an algorithm of correcting the distortion of fisheye image is improved,and the simulation shows that the parameters accurately,finally obtains the experimental results.