<p>This invention relates to a data processing system including a normalizing unit for receiving a part of a plurality of pixels in a one-pixel column of image data in parallel and for magnifying or contracting the data in the vertical direction in the one pixel-column, and a transposing unit for transposing image data magnified or contracted in one direction obtained from the normalizing unit and for reinputting the transposed data to the normalizing unit. This invention is applicable to data processing by character recognition devices for reading characters of different sizes.</p>
