The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2008
Filed:
Mar. 26, 2003
Pertti Aimonen, Pirkkala, FI;
Hannes Kalaniemi, Jyvaskyla, FI;
Harri Mustonen, Jyvasklya, FI;
Metso Automation Oy, Helsinki, FI;
Abstract
The invention relates to a method in the control of the quality or the condition of a fibre web () on the basis of optical imaging diagnostics, wherein the fibre web () under examination and/or means () relating to the processing of the fibre web are monitored with at least one optical imaging measuring device (to N). According to the method, the scale of the observation area of said at least one imaging measuring device (to N) is calibrated, when said measuring device is taken into use, by means of one or more calibration objects placed in the observation area of the measuring device, to correct the perspective error caused by the position between said measuring device and the object () observed by it.