DOCUMENT IMAGE PROCESSING METHOD, CHARACTER RECOGNITION SYSTEM, AND DOCUMENT IMAGE PROCESSOR

摘要

PURPOSE:To extremely easily detect whether or not the page of a document and the direction of a text are correct when the document is accumulated or reproduced. CONSTITUTION:It is detected whether or not the direction of a document image is set adversely by recognizing a text block including plural scan lines of image data in the document image respectively, acquiring a sample data set by summing the number of picture element data provided with either of two logical values at individual plural scan lines a prescribed group of text blocks, calculating the moment of the sample data set, and comparing 12 the moment of the sample data set with standardized moment data regarding plural document images provided with known directions.