Computer Science ›› 2015, Vol. 42 ›› Issue (8): 319-322.

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Printing Defects Detection and Realization in Food Packaging Based on Image Registration

YANG Zu-bin and DAI Xiao-hong   

  • Online:2018-11-14 Published:2018-11-14

Abstract: There is a big difference in space between the real-time image collected by traditional printing defects detection system in food packaging and standard image.Before defects detection,the real-time image is registered with the standard image,and then image defects are detected and identified.In view of such defects with long time detection,low sorting efficiency,high missing rate and high requirements for human vision of traditional detection methods,an image registration algorithm for printing defects detection in food packaging based on image enhancement processing was proposed.And the application of improved algorithm of wavelet transformation to image edge detection has effectively solved the problems of error detection caused by noises.The experimental simulation results indicate that this system is highly stable,and reliable and can precisely detect such micro-defects as knife fuse and braces less than 0.1 mm,which realizes non-destructive detection in food packaging printings.

Key words: Image enhancement,Wavelet transformation,Edge detection,Food packaging,Printing defects

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