Patent ID: 7277201

Claim:
A method for creating an anamorphic halftone line screen based on a desired screen angle and a desired screen frequency using a high-addressability grid having a high-addressability direction and a low addressability direction, comprising: defining a first vector on the high-addressability grid having the desired screen angle; determining a low-addressability-direction component for at least one possible second vector; determining, for each of at least one number of cycles of the halftone line screen, for each low-addressability-direction component of the at least one second vector, a high-addressability-direction component for the second vector for that number of cycles and for that low-addressability-direction component; selecting at least one of the determined high-addressability-direction components that is close to an integer number of high-addressability units of the high-addressability grid; rounding at least one of the at least one selected high-addressability-direction components that is close to an integer number of high-addressability units to a nearest integer value to define a second vector having that rounded high-addressability-direction component and the low-addressability-direction component that was used to determine the corresponding determined high-addressability-direction component; determining, for at least one defined second vector, a size and a shift of a Holladay brick usable to represent a halftone line screen cell defined by the first vector and that second vector, wherein the anamorphic halftone line screen is defined by the determined Holladay brick.