Patent ID: 6282325
Filing Date: 2001-08-28
Classification: G06K,H04N

Abstract:
An image processing apparatus for binarizing an image scanned by a shuttle type scanner, said scanner scanning a document by moving laterally across a band of the document to successively scan each slice of said band, then moving longitudinally along the document to the next adjacent band, and repeating the foregoing steps until each slice of each band of the document has been scanned, said apparatus comprising:a scanner for scanning pixels of a slice from a document;a processor for binarizing each pixel of said scanned slice using a mask;a first memory for storing processing results of error values generated during binarization of each final pixel of a plurality of slices of said band as binarized by said processor; anda second memory for storing processing results of error values generated during binarization of each pixel of said scanned slice as binarized by said processor,wherein, upon binarizing a first pixel of each of a plurality of slices of a next band, said processor scans processing results of error values of final pixels of a plurality of slices of a previous band stored in said first memory and binarizes the values, and then scans said second memory and binarizes next pixels.