کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
732222 1461633 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accurate camera calibration with distortion models using sphere images
ترجمه فارسی عنوان
کالیبراسیون دقیق دوربین با استفاده از مدل های اعوجاج با استفاده از تصاویر کروی
کلمات کلیدی
کالیبراسیون دوربین، ضرایب تحریف کره
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی


• Calibrate both linear parameters and distortion coefficients simultaneously.
• Only one image with at least two projection conics of sphere is needed.
• Accuracy is greatly improved comparing with existing calibration method using spheres.

In order to improve the accuracy of sphere images based camera calibration, a novel approach was proposed in this paper which can calibrate both linear parameters and distortion coefficients simultaneously. The great axis and bitangent lines of the projection conics are applied to solve principal point and sphere center projections. Then the focal length is computed using rotational symmetry of projective cone. Finally distortion coefficients are estimated by optimization search algorithm. Synthetic data experiments analyzed the main error factors and real data results showed that the re-projection error of the proposed method was less than 0.1 pixel which seems to be more accurate than existing methods using spheres and reach the same accuracy level as the planar target method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 65, January 2015, Pages 83–87
نویسندگان
, , , , ,