Patent Number: 8,823,819

Title: Apparatus for measuring position and shape of pattern formed on sheet

Abstract: An apparatus for measuring the position and shape of a pattern formed on a sheet includes a sheet on which a pattern is formed, a camera holding mechanism that is disposed perpendicular to a transportation direction of the sheet, at least one camera that is disposed such that the camera is movable in a longitudinal direction of the camera holding mechanism, and an image processing computer that processes an image picked up by the at least one camera. In the measuring apparatus, when calibration is performed, calibration is performed with reference to a picked up image of the coating pattern and a picked up image of a reference body for calibration.

Inventors: Ichizawa; Yasushi (Musashino, JP), Chida; Naomichi (Musashino, JP), Akutsu; Minoru (Musashino, JP)

Assignee: Yokogawa Electric Corporation

International Classification: H04N 5/225 (20060101); H04N 7/18 (20060101)

Expiration Date: 9/02/12018