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8 March 1999 Automatic inspection of the printing on soft drink cans by image processing analysis
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This paper describes a machine vision, automatic inspection algorithm of the printings of soft drink cans by image processing analysis. There are two new techniques employed in this procedure to make the automatic inspection possible: (1) barcode referencing: we develop a fast barcode detection algorithm, such that when the cans pass through the image- taking area in the inspection lines with uncertain directions, we use barcode location as the reference point, (2) 2D matching: we connect the multiple view-angle images of the whole 3D cans' surfaces, then with artificial 2D images, we adjust the matching process for a flexible system inspection resolution requirements for the quality control decision making. This process inspects 3D cans with true color information and can easily replace different cans for inspection.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Catherine W. Ni "Automatic inspection of the printing on soft drink cans by image processing analysis", Proc. SPIE 3652, Machine Vision Applications in Industrial Inspection VII, (8 March 1999);

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