B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
B41F 33/00 (2006.01) G01N 21/956 (2006.01) G06T 7/00 (2006.01)
Patent
CA 2281113
The invention relates to a process for producing by electronic means a model for automatically inspecting the print quality on deformable objects. The model is firstly produced by capturing with an electronic camera (CCD for example) the images of a set of sheets whose print quality is regarded as acceptable; the images are stored so as to produce a first reference image, together with the relevant densitometric tolerance limits. This reference image is thereafter divided into a multitude of sub-images by superimposing a grid with very small mesh cells. During inspection, the distances between the nodes of the grid are measured on the image to be inspected: this therefore produces an elastic modification of the model, which is such as to make the distances between the nodes the same as in the image to be inspected. The image to be inspected is thus verified with respect to the modified reference (model) by using any of the standard inspection techniques.
de La Rue Giori S.a.
Fetherstonhaugh & Co.
Kba-Notasys Sa
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