Coating Process Monitoring Using Computer Vision

Erik Veijola
Oulu University of Applied Sciences
Oulu University of Applied Sciences, 2013


   title={Coating Process Monitoring Using Computer Vision},

   author={Veijola, Erik and others},


   publisher={Oulun seudun ammattikorkeakoulu}


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The aim of this Bachelor’s Thesis was to make a prototype system for Metso Paper Inc. for monitoring a paper roll coating process. If the coating is done badly and there are faults one has to redo the process which lowers the profits of the company since the process is costly. The work was proposed by Seppo Parviainen in December of 2012. The resulting system was to alarm the personnel of faults in the process. Specifically if the system that is applying the synthetic resin on to the roll gets blocked, there is too much air in the system, or there is some other reason why the nozzles are blocked. In the making of the project I used freely available open source computer vision libraries and materials. The system was made for Windows systems and was implemented with OpenCV libraries and C++ programming language. The system was also tested on a Windows system. The final system works as planned and the customer is satisfied with the results. The research shows that it is possible to make a system for monitoring this type of process. The system was not implemented with object detection because of time constraints. The system can be developed further by adding object detection, better image processing and image analysis algorithms, cameras etc. My work was not to create these kinds of algorithms, or research what is the best camera for the purpose.
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