Methods for qualitative evaluation of a material with at least one identification characteristic

US7447353B2 · kind B2 · utility

Assignee

• KOENIG & BAUER AG · DE

Inventors

• Carsten Diederichs · Lemgo, DE
• Volker Lohweg · Bielefeld, DE
• Jorn Sacher · Hiddenhausen, DE
• Bernd Stober · Rheda-Wiedenbrück, DE
• Thomas Türke · Lonay, CH
• Harald Heinrich Willeke · Paderborn, DE

Key dates

• Filing date: Mar 26, 2004
• Grant date: Nov 4, 2008
• Expiry date: Oct 31, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/30144
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A material, with at least one identification characteristic, is subjected to a qualitative evaluation. A color image of this at least one identification characteristic is taken using an electronic image sensor which produces an electrical signal that is evaluated by an evaluation device. Another electrical signal is obtained from at least one reference image and is stored in a data memory. The second electric signal, has a set point value, for the first electric signal, for at least two set point values contained in the reference image. The first signal is compared to at least two set point values in the second image. The color image of the identification characteristic is tested for deviation from the reference. The identification characteristic is checked for association with at least one aspect of the identification characteristic of the material. The tasks are carried out in a continuous working process being carried out by a machine, such as a printing machine, during a continuous printing process.