Character line detecting apparatus using simplified projection information and method thereof and character recognition apparatus thereof and method thereof

摘要

A character line recognition apparatus including an image input section (2) for binarizing an inputted document image so as to output a binarized image (101), an extracting section (3, 4) for obtaining a combining component of a black pixel from the binarized image so as to convert the combining component into circumscribed rectangular data (103), a calculating section (5) for calculating out simplified projection information based on a prescribed function (Fi(x)) into which the circumscribed rectangular data, a calculating section (5) for calculating line direction projection information (equation (1)) based on the prescribed function as the simplified projection information, and a detecting section (6) for detecting a character line (101) on the document image based on the line direction projection information.