公开(公告)号：US11558631B2

公开(公告)日：2023-01-17

申请号：US16836078

申请日：2020-03-31

Applicant: GOOGLE LLC

Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/50 ,  H04N7/01 ,  H04N19/184 ,  H04N19/61

Abstract: A super-resolution coding mode is described. Encoded image can be decoded by decoding, from an encoded bitstream, a flag indicating whether an image was encoded using the super-resolution mode. The image is encoded at a first resolution. Responsive to the flag indicating that the image was encoded using the super-resolution mode, bits indicating an amount of scaling of the image are decoded. The image is decoded from the encoded bitstream to obtain a reconstructed image at the first resolution, and the reconstructed image is upscaled to a second resolution using the amount of scaling to obtain an upscaled reconstructed image. The second resolution is higher than the first resolution. Loop restoration filtering is applied to the upscaled reconstructed image using loop restoration parameters to obtain a loop restored image at the second resolution.

公开(公告)号：US20230179789A1

公开(公告)日：2023-06-08

申请号：US18155224

申请日：2023-01-17

Applicant: Google LLC

Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

IPC: H04N19/50 ,  H04N7/01 ,  H04N19/117 ,  H04N19/184 ,  H04N19/61 ,  H04N19/176

CPC classification number: H04N19/50 ,  H04N7/0117 ,  H04N19/117 ,  H04N19/184 ,  H04N19/619 ,  H04N19/176

Abstract: A super-resolution coding mode is described. An encoded image can be decoded from an encoded bitstream stored on a non-transitory computer-readable storage medium. A flag can indicate whether an image was encoded using the super-resolution mode at a first resolution. Responsive to the flag indicating that the image was encoded using the super-resolution mode, bits indicating an amount of scaling of the image are included. The image is decoded from the encoded bitstream to obtain a reconstructed image at the first resolution, and the reconstructed image is upscaled to a second resolution using the amount of scaling to obtain an upscaled reconstructed image. The second resolution is higher than the first resolution. Loop restoration parameters within the bitstream can used for look restoration filtering of the upscaled reconstructed image to obtain a loop restored image at the second resolution.

公开(公告)号：US20200228820A1

公开(公告)日：2020-07-16

申请号：US16836078

申请日：2020-03-31

Applicant: GOOGLE LLC

Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

IPC: H04N19/50 ,  H04N7/01 ,  H04N19/117 ,  H04N19/184 ,  H04N19/61 ,  H04N19/176

Abstract: A super-resolution coding mode is described. Encoded image can be decoded by decoding, from an encoded bitstream, a flag indicating whether an image was encoded using the super-resolution mode. The image is encoded at a first resolution. Responsive to the flag indicating that the image was encoded using the super-resolution mode, bits indicating an amount of scaling of the image are decoded. The image is decoded from the encoded bitstream to obtain a reconstructed image at the first resolution, and the reconstructed image is upscaled to a second resolution using the amount of scaling to obtain an upscaled reconstructed image. The second resolution is higher than the first resolution. Loop restoration filtering is applied to the upscaled reconstructed image using loop restoration parameters to obtain a loop restored image at the second resolution.

公开(公告)号：US12075081B2

公开(公告)日：2024-08-27

申请号：US18155224

申请日：2023-01-17

Applicant: Google LLC

Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

IPC: H04N19/50 ,  H04N7/01 ,  H04N19/117 ,  H04N19/176 ,  H04N19/184 ,  H04N19/61

CPC classification number: H04N19/50 ,  H04N7/0117 ,  H04N19/117 ,  H04N19/176 ,  H04N19/184 ,  H04N19/619

Abstract: A super-resolution coding mode is described. An encoded image can be decoded from an encoded bitstream stored on a non-transitory computer-readable storage medium. A flag can indicate whether an image was encoded using the super-resolution mode at a first resolution. Responsive to the flag indicating that the image was encoded using the super-resolution mode, bits indicating an amount of scaling of the image are included. The image is decoded from the encoded bitstream to obtain a reconstructed image at the first resolution, and the reconstructed image is upscaled to a second resolution using the amount of scaling to obtain an upscaled reconstructed image. The second resolution is higher than the first resolution. Loop restoration parameters within the bitstream can used for look restoration filtering of the upscaled reconstructed image to obtain a loop restored image at the second resolution.

公开(公告)号：US20190394482A1

公开(公告)日：2019-12-26

申请号：US16018105

申请日：2018-06-26

Applicant: GOOGLE LLC

Inventor： Urvang Joshi ,  Debargha Mukherjee ,  Andrew Simpson

IPC: H04N19/50 ,  H04N7/01 ,  H04N19/176 ,  H04N19/184 ,  H04N19/61 ,  H04N19/117

Abstract: Systems and methods are disclosed for encoding and decoding video. For example, methods may include accessing an encoded bitstream; decoding loop restoration parameters in the encoded bitstream; after reconstruction of an image at a second resolution based on data of the encoded bitstream, upscaling the reconstructed image to obtain an upscaled reconstructed image at a first resolution, wherein the second resolution is less than the first resolution in at least one dimension; and applying loop restoration filtering to the upscaled reconstructed image using the loop restoration parameters to obtain a loop restored image at the first resolution.