De Villiers, JJermy, RNicolls, F2016-08-222016-08-222015-11De Villiers, J. Jermy, R. and Nicolls, F. 2015. A study on the effect of different image centres on stereo triangulation accuracy. In: Proceedings of the 2015 Pattern Recognition Association of South Africa and Robotics and Mechatronics International Conference (PRASA-RobMech), 26-27 November 2015, Port Elizabeth, South Africa10.1109/RoboMech.2015.7359493http://hdl.handle.net/10204/8732Proceedings of the 2015 Pattern Recognition Association of South Africa and Robotics and Mechatronics International Conference (PRASA-RobMech), 26-27 November 2015, Port Elizabeth, South Africa.This paper evaluates the effect of mixing the distortion centre, principal point and arithmetic image centre on the distortion correction, focal length determination and resulting real-world stereo vision triangulation. A robotic arm is used to generate a ground truth set of known positions resulting in 2078 measurements per cameras. It is seen that compared to the naive use of the arithmetic image centre improvements of 10% to 27% in triangulation accuracy can be made by determining an optimal principal point. An optimal distortion centre has a smaller but still beneficial effect.enStereo triangulation accuracyImage centresPattern recognitionPhotogrammetryCamera calibrationStereo visionConference PresentationDe Villiers, J., Jermy, R., & Nicolls, F. (2015). A study on the effect of different image centres on stereo triangulation accuracy. IEEE Xplore. http://hdl.handle.net/10204/8732De Villiers, J, R Jermy, and F Nicolls. "A study on the effect of different image centres on stereo triangulation accuracy." (2015): http://hdl.handle.net/10204/8732De Villiers J, Jermy R, Nicolls F, A study on the effect of different image centres on stereo triangulation accuracy; IEEE Xplore; 2015. http://hdl.handle.net/10204/8732 .TY - Conference Presentation AU - De Villiers, J AU - Jermy, R AU - Nicolls, F AB - This paper evaluates the effect of mixing the distortion centre, principal point and arithmetic image centre on the distortion correction, focal length determination and resulting real-world stereo vision triangulation. A robotic arm is used to generate a ground truth set of known positions resulting in 2078 measurements per cameras. It is seen that compared to the naive use of the arithmetic image centre improvements of 10% to 27% in triangulation accuracy can be made by determining an optimal principal point. An optimal distortion centre has a smaller but still beneficial effect. DA - 2015-11 DB - ResearchSpace DP - CSIR KW - Stereo triangulation accuracy KW - Image centres KW - Pattern recognition KW - Photogrammetry KW - Camera calibration KW - Stereo vision LK - https://researchspace.csir.co.za PY - 2015 T1 - A study on the effect of different image centres on stereo triangulation accuracy TI - A study on the effect of different image centres on stereo triangulation accuracy UR - http://hdl.handle.net/10204/8732 ER -