Bildverarbeitungsverfahren und Bildverarbeitungsvorrichtung und Scanner

Details

Veröffentlichungs-Nr.

EP2536122

Aktenzeichen

EP12162271

Anmeldetag

29. März 2012

Veröffentlichung

13. Juni 2018

Erteilung

13. Juni 2018

Rechtsraum

EP

IPC

H04N1/387G06T3/00G06K9/32// G06K9/36

Abstract

An image processing method generally includes: obtaining a vanishing point on a curve surface in a two-dimension image; extracting all the straight line segments between a top contour line and a bottom contour line of the curve surface by the vanishing point; removing a perspective distortion to get parallel straight line segments; obtaining the lengths of the straight line segments, obtaining the true width of each of the straight line segments in a three-dimension space and the depth increment of the straight line segments according to the lengths; obtaining the expanded width of each straight line segment according to the true width and the depth increment; obtaining the total expanded width of the curve surface to transform it into a flat surface; transforming image contents on the curve surface onto the flat surface. The method can be applied when scanning an open book.

Anmelder

Firma

FUJITSU LIMITED

Land

🇯🇵 Japan

Fachgebiete