Patent ID: 8390829

Claim:
A method of using an inkjet printer to print an input digital image containing at least one color channel having a plurality of rows and columns of pixels sampled at a first resolution, each pixel having a code value, comprising: (a) partitioning the input digital image into a set of spatially non-overlapping blocks; (b) computing block average code values for each color channel for each block responsive to the pixels in the input digital image that correspond to the block; (c) computing an image quality score for each block responsive to the block average code values for that block by using a multidimensional look-up table, wherein the multidimensional look-up table is indexed by the block average code values corresponding to each of the color channels and provides corresponding image quality scores, wherein the image quality score provides an indication of the likelihood of the block producing image artifacts in a particular print mode; (d) determining a print mode in response to the image quality scores for the set of blocks; (e) resizing the input digital image to form a second digital image containing a plurality of rows and columns of pixels sampled at a second resolution, wherein the second resolution is greater than the first resolution; and (f) printing the second digital image on the inkjet printer using the print mode.