Realtime pre-encoding content-adaptive GPU image dithering

A system, comprising:

• a first processor to:
• receive, for each of one or more input video frames and from a second processor, one or more random seeds and a frame identifier;
• initiate, for each of multiple input pixels of the input video frame, a dithering process that includes to:
• generate a red-green-blue (RGB) noise vector based at least in part on the one or more random seeds and on the frame identifier;
• generate a YUV noise vector by converting the generated RGB noise vector to a YUV representation of the RGB noise vector;
• compute a YUV representation of the input pixel based on RGB color information for the input pixel;
• and
• generate a dithered output pixel by adding the generated YUV noise vector to the YUV representation of the input pixel;
• and
• provide, for each of the one or more input video frames, a dithered output video frame for encoding that includes the dithered output pixels.

A server computing system, comprising:

• a set of one or more processors to:
• generate one or more input video frames;
• and
• for each of the one or more input video frames:
• generate a frame identifier and one or more random seeds;
• for each of multiple input pixels of the input video frame:
• generate a red-green-blue (RGB) noise vector based at least in part on the one or more random seeds and on the frame identifier;
• compute a YUV noise vector by converting the generated RGB noise vector to a YUV representation of the RGB noise vector;
• compute a YUV representation of the input pixel based on red-green-blue (RGB) color information for the input pixel;
• and
• generate a dithered output pixel by adding the generated YUV noise vector to the YUV representation of the input pixel;
• and
• encode a dithered output video frame that includes the dithered output pixels;
• and
• a network interface that is coupled to the set of one or more processors and that is configured to provide encoded output video frames to one or more client computing systems via at least one computer network.