公开(公告)号：US20240155160A1

公开(公告)日：2024-05-09

申请号：US18280551

申请日：2021-03-10

Applicant: GOOGLE LLC

Inventor： Richard Xie ,  Ramachandra Tahasildar ,  Danny Hong ,  Alex Sukhanov ,  Albert Julius Liu ,  Beril Erkin

IPC: H04N19/86 ,  A63F13/355 ,  H04N19/119 ,  H04N19/186

CPC classification number: H04N19/86 ,  A63F13/355 ,  H04N19/119 ,  H04N19/186 ,  A63F13/358

Abstract: Real-time pre-encoding dithering techniques mitigate or eliminate banding and other graphical artifacts in video frames prior to such video frames being encoded for transmission to and display by one or more client devices. For each of one or more input video frames, one or more random seeds and a frame identifier are received, and a dithering process is initiated for each of one or more pixels of the input video frame. The dithering process includes generating a YUV noise vector based on the random seeds and on the frame identifier, computing a YUV representation of the input pixel based on RGB color information for the input pixel, and generating a dithered output pixel by adding the generated YUV noise vector to the YUV representation of the input pixel.

公开(公告)号：US20230396766A1

公开(公告)日：2023-12-07

申请号：US18033473

申请日：2020-11-25

Applicant: GOOGLE LLC

Inventor： Richard Xie ,  Ramachandra Tahasildar ,  Alex Sukhanov ,  Danny Hong ,  Beril Erkin

IPC: H04N19/124 ,  H04N19/172 ,  H04N19/463 ,  H04N19/42 ,  H04N19/132 ,  H04N19/136 ,  A63F13/355

CPC classification number: H04N19/124 ,  H04N19/172 ,  H04N19/463 ,  A63F13/355 ,  H04N19/132 ,  H04N19/136 ,  H04N19/42

Abstract: Techniques for encoding game content for real-time cloud-gaming, and more specifically to using an adaptive statistical model in a moving window of previous frames up to a current frame to adaptively compute a lower-bound of a quantization parameter (QP) that corresponds to a chosen peak signal to noise ratio (PSNR) target. The result of this PSNR-guided encoding is significantly reducing the size of encoded frames (i.e., undershooting a target bit rate when there are no subjective quality losses on those frames using their PSNR as the guidance). These reductions mitigate bandwidth issues and improve the overall user experience because less bits transferred results in faster network transmission and decoding, as well as less platform overhead.

公开(公告)号：US20240388728A1

公开(公告)日：2024-11-21

申请号：US18684430

申请日：2021-08-18

Applicant: GOOGLE LLC

Inventor： Richard Xie ,  Ramachandra Tahasildar ,  Danny Hong ,  Jani Huoponen

IPC: H04N19/70 ,  H04N19/30 ,  H04N19/63

Abstract: An encoding operation is implemented to encode one or more frames, for example, gaming frames into a gaming stream. The encoding operation includes decomposing a current frame into a base layer and an enhancement layer. The resulting base layer and enhancement layer are then each encoded to produce an encoded base layer and an encoded enhancement layer. The encoded enhancement layer is truncated, for example, according to a comparison of the sum of the size of the encoded base layer and encoded enhancement layer to a threshold value. In an example embodiment, a multiplexer combines the encoded base layer and truncated enhancement layer to produce the encoded frame. The encoded frame may then be transmitted as part of a stream to a client device.

公开(公告)号：US20240129468A1

公开(公告)日：2024-04-18

申请号：US18276580

申请日：2021-02-12

Applicant: GOOGLE LLC

Inventor： Danny Hong ,  Richard Xie ,  Ramachandra Tahasildar

IPC: H04N19/124 ,  H04N19/70

CPC classification number: H04N19/124 ,  H04N19/70

Abstract: Pre-encoding noise parameterization techniques mitigate or eliminate banding and other graphical artifacts in video frames for decoding and presentation by a client device. For one or more input video frames, a quantization parameter associated with the input video frames is identified. Noise synthesis parameters are determined based on the identified quantization parameter, and the input video frames are encoded for transmission. The encoded video frames are transmitted to the client device along with the determined noise synthesis parameters, for use by the client device in generating synthetic noise to add to resulting video frames decoded by the client device.