Automated Real-Time Visual Inspection System for High-Resolution Superimposed Printings
F. Torres, J.M. Sebastián, R. Aracil, L.M. Jiménez, O. Reinoso
Image and Vision Computing (sci: 0.431)  (September 1998)
 ISSN:0262-8856  DOI:10.1016/S0262-8856(98)00059-6  - Volume 16, pp 947 - 958


AUTOMATED REAL-TIME VISUAL INSPECTION SYSTEM FOR HIGH-RESOLUTION SUPERIMPOSED PRINTINGS F.Torres*, J.M.Sebastian†, R.Aracil†, L.M.Jimenez*, O.Reinoso† *University of Alicante, Dept. of System Engineering and Communications, 03080 Alicante (Spain) †Polytechnic University of Madrid, Dept. of System Engineering and Automatica, (Spain) Abstract This paper describes an automatic real-time inspection system of printed products. This system has been applied to the inspection of objects having superimposed printings with different reference systems at high resolution, that is, there are not two identical products. The automation of this process is particularly critical, and its solution is highly complex. The techniques employed are based on a combination of various disciplines, allowing a compromise between resolution and processing speed. In this way, disciplines such as morphological processing, subpixel accuracy, scheduling techniques, parallel processing, etc. are incorporated.