Verfahren zur Bestimmung der Neigung eines Schriftzeichen enthaltenden Bildes

摘要

The present invention relates to a method for detecting inclination of an image of a paper to be input for being read, especially to a method for detecting inclination so as to correct non-intended inclination of a paper to be input and read as an image by a copy machine, facsimile machine, OCR, etc. A method for detecting inclination of an image of characters comprising steps of: expanding the image as many times as that characters in the same character line fuse with one another in a expanded image; defining a major direction of the inclination; defining a coefficient for each pixel pattern in a convolution of predetermined size in the image; and calculating statistical value as the inclination from the coefficient of total convolutions.