By a News Reporter-Staff News Editor at Journal of Technology -- Researchers detail new data in Optical Research. According to news reporting from Wuhan, People's Republic of China, by VerticalNews journalists, research stated, "In the camera calibration using translational planar object instead of 3D target, the skew affected by the imprecision in installation causes the object to deviate from the designated position, which produces errors to the world coordinates of control points and reduces the calibration accuracy. In this paper, a skew correction model is established to correct this skew."
The news correspondents obtained a quote from the research from the Hubei University of Technology, "We note and prove that the skew bias of control point which is close to the fix point is tiny. According to the projection regulation, the pixel distance between two adjacent control points which is close to the fix point in skewed situation is a value extremely approximate to that in the ideal situation. Based on this property, we utilize the pixel distance to assign the image coordinates based on the fix point. The assigned values are then employed to estimate the skew factors, by which the initial camera parameters are optimized and lens distortion in the calibration images are corrected. This process is then repeated until convergence. Experiments based on real images prove that this method is more accurate than other methods without correcting skew."
According to the news reporters, the research concluded: "The parameters obtained by our method can be applied to the 3D reconstruction directly and effectively."
For more information on this research see: A novel planar calibration method using the iterative correction of control points information. Optik, 2013;124(23):5930-5936. Optik can be contacted at: Elsevier Gmbh, Urban & Fischer Verlag, Office Jena, P O Box 100537, 07705 Jena, Germany. (Elsevier - www.elsevier.com; Optik - www.elsevier.com/wps/product/cws_home/701788)
Our news journalists report that additional information may be obtained by contacting S.Y. Xu, Hubei University of Technology, Sch Elect & Elect Engn, Wuhan, People's Republic of China.
Keywords for this news article include: Asia, Wuhan, Optical Research, People's Republic of China
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