Video metrology for documentation of engineering construction
type: CreativeWork
description: A practical method was developed to calibrate the interior geometry of CCD cameras. The method employs a flat brick wall as a control field. A brick wall is an excellent control field, because it provides a large number of well-defined points at almost any focal setting. When compared with laboratory calibration, which requires a three-dimensional control field, the method of the planar constraint was capable of providing results of comparable accuracy. A RMS error of better than 0.2 pixels in the image residuals was achieved consistently for various focal settings. Using about 50 stereo image points, the interior geometry of a CCD camera was effectively modeled. Increasing the number of image points could increase the accuracy of the calibration parameters.
abstract: A practical method was developed to calibrate the interior geometry of CCD cameras. The method employs a flat brick wall as a control field. A brick wall is an excellent control field, because it provides a large number of well-defined points at almost any focal setting. When compared with laboratory calibration, which requires a three-dimensional control field, the method of the planar constraint was capable of providing results of comparable accuracy. A RMS error of better than 0.2 pixels in the image residuals was achieved consistently for various focal settings. Using about 50 stereo image points, the interior geometry of a CCD camera was effectively modeled. Increasing the number of image points could increase the accuracy of the calibration parameters.
author: Obaidat, Mohammed Taleb Mefleh
language: eng
keywords: Engineering, Civil, Computer Science
date published: 2011-05-07T12:21:59Z
date modified: 2026-07-22T22:25:14Z
provider: University of Illinois - Urbana-Champaign
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Illinois at Urbana-Champaign

PropertyValue
property ID: Handle
value: http://hdl.handle.net/2142/19891