Devices for the lines the direction determining image slope detection and image slope correction.

摘要

PROBLEM TO BE SOLVED: To make a row decision on an image having a complicated layout and to decide row directions other than longitudinal and lateral rows by providing a row direction deciding means which detects the direction where character elements are closely distributed and deciding the direction as the row direction of characters. ;SOLUTION: A character element distance calculation part 10 calculates the distances to nearby character elements by character elements and directions by referring to the contents of a character element buffer 9 and stores the shortest distance among them in a character element distance buffer 11. A row direction decision part 12 while referring to the contents of the character element distance buffer 11 uses a majority decision principle to check in which of the longitudinal and lateral directions there are many short-distance character elements by the elements. Then the direction wherein the frequency of a decrease in character element distance is the highest is found. Lastly, the row direction decision part 12 converts the value representing the direction or the like of the maximum frequency into the angle of the row direction or other outputs by referring a number direction correspondence table and outputs the result.;COPYRIGHT: (C)1999,JPO