Method and device for identifying dot-matrix graphics implanted on the surface of curved objects

Abstract

The invention provides a method for identifying a dot matrix image implanted on the surface of a curved object, comprising: acquiring a curved dot matrix image implanted on the surface of a curved article; converting the dot matrix image of the curved surface into a plane dot matrix image; When each area in the image is at the same level, process the planar dot matrix image; obtain the effective ink dot image in the planar dot matrix image, and make its gray level reach the preset range; analyze the planar dot matrix image as The corresponding image coding data; distinguish the image coding data, and output corresponding information according to the identification result, so as to know the authenticity of the current item. The device for implementing the above method mainly includes an identification module, a conversion module, a detection module, an effective ink dot acquisition module, a gray level adjustment module, an analysis module, an encoding database and a related information database. The invention can identify and distinguish the curved surface dot matrix pattern implanted on the surface of the curved surface object, so as to know the authenticity of the current object.

Description

technical field [0001] The invention relates to a method for identifying anti-counterfeit marks, in particular to a method and device for identifying dot matrix patterns implanted on the surface of curved objects. Background technique [0002] At present, the existing dot matrix graphics used as anti-counterfeiting marks are generally implanted on the outer surface of planar items, and the authenticity of the current item can be known according to the identification results. However, when the outer surface of the object is bent by force, the dot matrix pattern implanted on its outer surface also becomes a curved structure, and the existing identification device can only distinguish the dot matrix pattern of the plane, and cannot The curved dot matrix pattern is recognized. [0003] Therefore, there is an urgent need for a method that can distinguish curved dot-matrix graphics to know the authenticity of the current article. Contents of the invention [0004] Aiming at th...

AI Technical Summary

Problems solved by technology

However, when the outer surface of the object is bent by force, the dot matrix pattern implanted on its outer surface also becomes a curved structure, and the existing identification device can only distinguish the dot matrix pattern of the plane, and cannot Curved dot matrix pattern for recognition

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