System and method for halftoning using a time-variable halftone pattern
AssigneeApple Inc.
InventorsKok S. Chen, Gabriel G. Marcu
Life of this patent
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Abstract
Successive frames or images of an input image that are presented to the output device are individually halftoned. A starting location within the input image for tiling one of one or more halftone techniques over the frame or image is determined. The starting location is then offset from the previously used starting location after a certain number of frames or images have been halftoned. Any halftoning technique may be used to halftone the frames or images. The halftoned frames or images are then viewed in a sequence in time.
Claims20
A method for halftoning an input image comprised of a plurality of pixels, the method comprising:
- determining a starting location within the input image for initiating a halftoning technique;
- halftoning the input image by tiling the halftoning technique over the plurality of pixels in the input image beginning at the starting location;
- and
- repeating the steps of determining a starting location within the input image and halftoning the input image, wherein the starting location is offset from the previously used starting location after a certain number of input images have been halftoned.
An apparatus for halftoning an input image comprised of a plurality of pixels, the apparatus comprising:
- means for determining a starting location within the input image for initiating a halftoning technique;
- means for halftoning the input image by tiling the halftoning technique over the plurality of pixels in the input image beginning at the starting location;
- and
- means for repeatedly determining a starting location within the input image and halftoning the input image, wherein the staffing location is offset from the previously used starting location after a certain number of input images have been halftoned.
A system for halftoning an input image comprised of a plurality of pixels, the system comprising:
- a processor operable to repeatedly determine a staffing location within the input image for initiating a halftoning technique and tiling the halftoning technique over the plurality of pixels in the input image beginning at the starting location, wherein the starting location is offset from the previously used starting location after a certain number of input images have been halftoned;
- and
- an output device operable to receive and output the halftoned input images.
Dependencies are inferred from the claim text.