公开(公告)号：US11449966B2

公开(公告)日：2022-09-20

申请号：US16946379

申请日：2020-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Su ,  Xin Liu ,  Hongyu Sun ,  Xiaoxing Zhu ,  Fan Zhang

IPC: G06T3/40 ,  G06N3/08 ,  G06N5/04 ,  G06T5/00 ,  G06T5/20 ,  G06T5/50

Abstract: A computer-implemented method for increasing the image resolution of a digital image is provided. The method includes performing bicubic upsampling of the digital image to generate a base high-resolution (HR) image. The digital image is converted from a red-green-blue (RGB) color space to a Luma (Y), Chroma Blue Difference (Cb), and Chroma Red Difference (Cr) (YCbCr) color space to generate a low-resolution (LR) residual image. A plurality of convolutional layers of a neural network model is applied to the LR residual image to convert it to a plurality of HR residual sub-images corresponding to the digital image. An HR image corresponding to the digital image is generated using the base HR image and the plurality of HR residual sub-images.