Patent ID: 7098927

Claim:
A method for creating an image dither pattern structure, said method comprising: a. establishing a first multi-dimensional array of image dither pattern tiles; said array comprising a first upper horizontal spatial frequency bound, a first lower horizontal spatial frequency bound, a first upper vertical spatial frequency bound, a first lower vertical spatial frequency bound, a first upper temporal frequency bound and a first lower temporal frequency bound; b. wherein said spatial frequency bounds and said temporal frequency bounds define a high-pass pattern configuration; c. establishing a second multi-dimensional array of image dither pattern tiles, said array comprising a second upper horizontal spatial frequency bound, a second lower horizontal spatial frequency bound, a second upper vertical spatial frequency bound, a second lower vertical spatial frequency bound, a second upper temporal frequency bound a second lower temporal frequency bound; d. wherein said second lower temporal frequency bound is lower than said first lower temporal frequency bound; and e. associating said first multi-dimensional array of image dither pattern tiles with a first range of image characteristic values; and f. associating said second multi-dimensional array of image dither pattern tiles with a second range of image characteristic values.