Title:
UPSCALING DEVICE, UPSCALING METHOD, AND UPSCALING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/053735
Kind Code:
A1
Abstract:
Provided are an upscaling device, an upscaling method, and an upscaling program capable of performing an accurate keying process at low cost. This upscaling device comprises: an image acquisition unit which acquires a high-resolution input image that indicates a background and a foreground, a low-resolution input image that is obtained by reducing the resolution of the high-resolution input image, and a low-resolution alpha image that indicates the area of the foreground in the low-resolution input image; a correlation acquisition unit which acquires, for each pixel pair comprising a pixel of the low-resolution input image and the corresponding pixel of the low-resolution alpha image, the correlation between grayscale information about the low-resolution input image and an alpha value of the low-resolution alpha image, and upscales the resolution of the correlation to be equal to the resolution of the high-resolution input image; and an output unit which outputs a high-resolution alpha image having the same resolution as the high-resolution input image, on the basis of the high-resolution input image and the upscaled correlations.
Inventors:
SHINOHARA TAKAYUKI (JP)
Application Number:
PCT/JP2019/036430
Publication Date:
March 25, 2021
Filing Date:
September 17, 2019
Export Citation:
Assignee:
SONY INTERACTIVE ENTERTAINMENT INC (JP)
International Classes:
G06T1/00; H04N1/387
Foreign References:
| JP2019121150A | 2019-07-22 | |||
| JP2008165792A | 2008-07-17 |
Attorney, Agent or Firm:
HARUKA PATENT & TRADEMARK ATTORNEYS (JP)
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