3HOLLY M. MATLAB for Engineers ( Third Edition ) [ M ]. Newjersey : Prentice Hall ,2011.
4RAFAEL C G, RICHARD E. Digital Image Processing ( Third Edition) [ M ]. Newjersey : Prentice Hall,2007.
5LEE Jang-won,LEE Chang-won,SHIN Kee-hyun. Tension Estimation by Using Register Error in Roll to Roll e-Print- ing System[J]. 17th IFAC World Congress,2008:11889-- 11894.
6PATROVA A. Investigation of Stress- strain Behaviour of Wet Paper Sheets [ D ]. Sweden : Lulea University of Tech- nology ,2010.
7TURRADO S J, et al. Fiber Properties and Their Influence on Paper Structure[ J ]. SPIE, 1999,1 ( 3227 ) :45--55.