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.