Patent ID: 11956402
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. Processing circuitry comprising:
a pixel ordering module to, for a greyscale image having a plurality of non-binary pixels, each non-binary pixel being associated with a grey level of a first number of grey levels, determine a position of the non-binary pixel in a pixel order based on the grey levels wherein non-binary pixels having the same grey level are grouped in the pixel order;
a greyscale module to:
determine a target number of grey levels, wherein the target number of grey levels is greater than the first number, and
taking the non-binary pixels in pixel order, allocate a grey level to each non-binary pixel to provide the target number of grey levels; and
a conversion module to convert the grey levels of non-binary pixels to thresholds of a halftone screen.