Lens distortion correction by adjusting image of calibration target

770-774The dilemma of lens distortion in computer vision is a common and serious phenomenon, especially when a lens captures a wide-angle image or when an object is seized with in a limited range. Using correction lens, phase plates or holographic gratings, mainly, makes the corrections. However, it is extremely difficult to accurately correct the distortion using attached optic components because the design of these components is complicated and commercially hard to attain. In this paper, a method is proposed to correct the distortion using the lens aberration theory and image processing techniques. A <span style="font-size: 14.0pt;line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:="" hiddenhorzocr;color:black;mso-ansi-language:en-in;mso-fareast-language:en-in;="" mso-bidi-language:hi"="" lang="EN-IN">calibration <span style="font-size: 14.0pt;line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";color:black;mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:hi"="" lang="EN-IN">target is taken as the correct and acceptable objective. The captured or seized image of the calibration target is not equally divided as original and this pixels-shift contains the distortion information which could be corrected by image process software produced by the authors.