US 12,014,476 B2
Upscaling device, upscaling method, and upscaling program
Takayuki Shinohara, Tokyo (JP)
Assigned to SONY INTERACTIVE ENTERTAINMENT INC., Tokyo (JP)
Appl. No. 17/638,467
Filed by SONY INTERACTIVE ENTERTAINMENT INC., Tokyo (JP)
PCT Filed Sep. 17, 2019, PCT No. PCT/JP2019/036430
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2021/053735, PCT Pub. Date Mar. 25, 2021.
Prior Publication US 2022/0318951 A1, Oct. 6, 2022
Int. Cl. G06T 3/4076 (2024.01); G06T 3/4069 (2024.01)
CPC G06T 3/4076 (2013.01) [G06T 3/4069 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An upscaling device comprising:
processing circuitry configured to
obtain a high-resolution input image illustrating a background and a foreground, a low-resolution input image obtained by converting the high-resolution input image into a low-resolution image, and a low-resolution alpha image illustrating a region of the foreground in the low-resolution input image;
obtain correlation between gray scale information of the low-resolution input image and an alpha value of the low-resolution alpha image for each corresponding pixel pair of the low-resolution input image and the low-resolution alpha image, and upscale the correlation into a resolution of the high-resolution input image; and
output a high-resolution alpha image having a resolution same as that of the high-resolution input image on a basis of the high-resolution input image and the up scaled correlation.