Helen Kamel Saad Hanna <br/><br/>
Error detection and control of offset printing processes /  
 إكتشاف الأخطاء و التحكم فى عمليات طباعة الأوفست 
Helen Kamel Saad Hanna ; Supervised Galal Ali Hassaan , Yasser Fathy Zyadah 
 - Cairo :   Helen Kamel Saad Hanna ,   2011 
 - 157 P. :   plans ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production 
<br/><br/> This thesis focuses on the detection of the errors occurring during offset printing process to minimize them and reduces waste of papers. Matlab GUI program was created in order to compare the original image which is stored in a computer as a reference image and a printed image which is captured using any input device. By using image processing techniques, the error either horizontal ± X or vertical (angular) ±0 deviation is determined 
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<br/><br/><label>Subjects--Index Terms: </label>Lithography Offset printing Self-tuning fuzzy PID