Title:
INVERSE HALFTONING METHOD AND APPARATUS BASED ON CONDITIONAL DIFFUSION NETWORK
Document Type and Number:
WIPO Patent Application WO/2024/077742
Kind Code:
A1
Abstract:
Disclosed in the present invention are an inverse halftoning method and apparatus based on a conditional diffusion network. The method comprises: calculating an image grayscale level and Laplacian prior of a halftone image; under the image grayscale level and the Laplacian prior, performing reverse dithering diffusion for T time steps on at least one initial state (aa), so as to generate a halftone distribution; and under the halftone distribution, performing inverse halftoning diffusion for T' time steps on at least one initial state (bb), so as to obtain an inverse halftoning result of the halftone image. By means of the present invention, the inpainting quality of a print is improved.
Inventors:
JIANG HAO (CN)
MU YADONG (CN)
MU YADONG (CN)
Application Number:
PCT/CN2022/136760
Publication Date:
April 18, 2024
Filing Date:
December 06, 2022
Export Citation:
Assignee:
UNIV BEIJING (CN)
International Classes:
G06T5/00; G06T7/90
Foreign References:
| CN111986275A | 2020-11-24 | |||
| CN113222856A | 2021-08-06 | |||
| CN114841872A | 2022-08-02 | |||
| US20140294298A1 | 2014-10-02 |
Attorney, Agent or Firm:
BEIJING JOYSHINE INTELLECTUAL PROPERTY OFFICE (CN)
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