In a method for converting from a first bitmap image resolution to a second bitmap resolution, be it interpolation (an increase in resolution) or decimation (a decrease in resolution) a bitmap image defined at resolution and density I.times.J.times.a is prefiltered as a first step to ensure the preservation...http://www.google.fr/patents/US5363213?utm_source=gb-gplus-shareBrevet US5363213 - Unquantized resolution conversion of bitmap images using error diffusion
Unquantized resolution conversion of bitmap images using error diffusion
