Automatic visual inspection and defect detection on variable data prints

摘要

We present a system for automatic, on-line visual inspection and print defect detection tor variable data printing (VDP). This system can be used to automatically stop the printing process and alert the operator to problems. We lay out the components required tor constructing a vision-based inspection system and show that our approach is novel for the high-speed detection of defects on variable data. When implemented in a high-speed digital printing press, the system allows a single skilled operator to monitor and maintain several presses, reducing the number of operators required to run a shop floor of presses as well as reduce wasted consumables when a defect goes undetected.