Patent ID: 11893288
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 9:
10. The image processing apparatus according to claim 1, wherein
in the dot pattern generating step, the second initial pattern generated for the first threshold matrix and the second initial pattern generated for the second threshold matrix are each a lattice pattern in which a position of any dot to a position of a dot other than the any dot is specified by two basis vectors and are different lattice patterns that vary in a combination of the two basis vectors,
in a combined dot pattern formed by superimposing any dot included in the second initial pattern for the first threshold matrix and any dot included in the second initial pattern for the second threshold matrix one on top of the other includes, a superimposed dot that is formed by superimposing of one dot included in the second initial pattern for the first threshold matrix and one dot included in the second initial pattern for the second threshold matrix and a neighboring dot in which one dot included in the second initial pattern for the first threshold matrix and one dot included in the second initial pattern for the second threshold matrix are arranged at an interval smaller than a lattice spacing defined by the two basis vectors, and
the neighboring dot includes a plurality of neighboring dots varying in tilt of a straight line connecting a center of the one dot in the second initial pattern for the first threshold matrix and a center of the one dot in the second initial pattern for the second threshold matrix forming the neighboring dot.