Patent ID: 11919319
Assignee: SEIKO EPSON CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. An image processing device comprising:
an acquisition unit acquiring, when representing an image in a three-dimensional first space, first image data indicating a gradation value of an image to be displayed by each of a plurality of pixels in the first space; and
a generation unit generating first display data by quantizing a gradation value indicated by the first image data using a three-dimensional first dither mask having a plurality of threshold values corresponding to a plurality of pixels in the first space, wherein
in the three-dimensional first dither mask,
when the first space is cut by a first plane,
a plurality of threshold values in the first plane has a frequency characteristic in which an amount of high frequency components in a range of spatial frequencies higher than a predetermined frequency is larger than an amount of low frequency components in a range of spatial frequencies lower than the predetermined frequency in a spatial frequency domain, and
when the first space is cut by a second plane that is not parallel to the first plane,
a plurality of threshold values in the second plane has a frequency characteristic in which an amount of high frequency components in a range of spatial frequencies higher than the predetermined frequency is larger than an amount of low frequency components in a range of spatial frequencies lower than the predetermined frequency in a spatial frequency domain.