8Pentland A P.Fractal-based description of nature scenes[J].IEEE Trans on Pattern Analysis and MachineIntelligence,1984,6(6):661-675.
9Kannatey Asibu.Modeling of conduction mode laser welding process for feedback control[J].Journal of Manufacturing Science and Engineering (USA),2004,122(3):420-328.
10Zhang Y M.Real-time sensing of sag geometry during GTA welding[J].Journal of Manufacturing Science and Engineering,Transactions of the 2000,119 (2):151-160.
7Faig W. Calibration of close-range photogrammetry system : mathematical formulation[ J]. Photogrammetric Engineering and Remote Sensing, 1975, 41 ( 12 ) : 1479 - 1486.
8Tsai R Y. A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the-shelf TV camera and lenses[ J ]. IEEE Journal of Automation, 1987, 3 (4) : 323 - 344.
9Jean-Yves Bouguet. Camera calibration toolbox for Matlab [ EB/ OL]. [2007-06-26]. http://www. vision. cahech. Edu/ Bouguetj/calib_doc.
10Vezhnevets Vladimir aka Dead Moroz. OpenCV and Matlab camera calibration toolboxes enhancement [ EB/OL ]. [ 2005 - 4 - 20 ]. http ://graphics. cs. msu. su/en/research/calibration.
