Patent ID: 6757080
Filing Date: 2004-06-29
Classification: G06T,H04N

Abstract:
An image processing system comprising:threshold table selecting means for selecting one of a plurality of threshold reference tables in accordance with an angle of rotation for bit map data having an attribute of rotation to thereby generate a threshold; gradation modulating means for performing gradation modulation by use of said threshold generated by said threshold table selecting means to thereby obtain gradation-modulated data; buffer means having a plurality of buffers and for storing said gradation-modulated data of said gradation modulating means into said plurality of buffers; addressing means for designating respective storage addresses for the plurality of buffers of said buffer means; rotating means for rotating said gradation-modulated data; and storage means for storing contents of said buffer means into said addresses designated by said addressing means and outputting said gradation-modulated data rotated by said rotating means.