Methods and Systems for Adaptive Dither Pattern Application

A method for adaptive processing of a digital image, said method comprising:

• a. establishing a first multi-dimensional array of dither pattern tiles, said array comprising a first lower temporal frequency bound;
• b. establishing a second multi-dimensional array of dither pattern tiles, said array comprising a second lower temporal frequency bound, wherein said second lower temporal frequency bound is lower than said first lower temporal frequency bound;
• and
• c. associating said first multi-dimensional array of dither pattern tiles with a first range of local luminance characteristic values;
• and
• d. associating said second multi-dimensional array of dither pattern tiles with a second range of local luminance characteristic values;
• e. determining a local luminance characteristic for a plurality of tile block locations;
• f. selecting a dither pattern tile from said first multi-dimensional array of dither pattern tiles for application on at least one of said tile block locations when said at least one of said tile block locations has a local luminance characteristic value that falls within said first range;
• and
• g. selecting a dither pattern tile from said second multi-dimensional array of dither pattern tiles for application on at least one of said tile block locations when said at least one of said tile block locations has a local luminance characteristic value that falls within said second range.

A system for adaptive processing of a digital image, said system comprising:

• a. a first multi-dimensional array of dither pattern tiles, said array comprising a first lower temporal frequency bound, wherein said first multi-dimensional array is associated with a first range of local image characteristic values;
• b. a second multi-dimensional array of dither pattern tiles, said array comprising a second lower temporal frequency bound, wherein said second lower temporal frequency bound is lower than said first lower temporal frequency bound, wherein said second multi-dimensional array is associated with a second range of local image characteristic values;
• and
• c. a selector for selecting between said first array and said second array based on the local image characteristic value for a location in said digital image.