کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
729712 1461496 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determining image distortion and PBS (point of best symmetry) in digital images using straight line matrices
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Determining image distortion and PBS (point of best symmetry) in digital images using straight line matrices
چکیده انگلیسی


• Measurements in photogrammetry require removing image distortion.
• We determine radial and tangential distortions and PBS (Point of Best Symmetry).
• We only measure point coordinates regardless of the position and direction of lines.
• Points belonging to multiple lines are optimal (not a problem).
• Results are optimal even using a single image with a minimum number of observables.

It is impossible to take accurate measurements in photogrammetry without first removing the distortion in images. This paper presents a methodology for correcting radial and tangential distortion and for determining the PBS (Point of Best Symmetry) without knowledge of the interior orientation parameters (IOPs). An analytical plumb-line calibration method is used, measuring only the coordinates of points on straight lines, regardless of the position and direction of these lines within the image. Points belonging to multiple lines can also be used since the effects on their X and Y coordinates are calculated independently. The results obtained on an image of a common scene, taken with a handheld non-metric camera, show a high degree of accuracy even with a minimum number of observables. And its application on a calibrated grid for engineering purposes with a semi-metric camera, results optimal even using a single image.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 91, September 2016, Pages 641–650
نویسندگان
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