Interpolation of video compression frames

摘要

Coding techniques for a video image compression system involve improving an image quality of a sequence of two or more bi-directionally predicted intermediate frames, where each of the frames includes multiple pixels. One method involves determining a brightness value of at least one pixel of each bi-directionally predicted intermediate frame in the sequence as an equal average of brightness values of pixels in non-bidirectionally predicted frames bracketing the sequence of bi-directionally predicted intermediate frames. The brightness values of the pixels in at least one of the non-bidirectionally predicted frames is converted from a non-linear representation.

主权项

1. An apparatus comprising a video bitstream stored on one or more non-transitory machine-readable media, the video bitstream characterized by:
picture areas of predicted and bidirectional predicted frames, wherein at least one picture area of a bidirectional predicted frame is in a compressed format, and wherein the compressed format comprises: a signal indicating an interpolative motion vector prediction mode for the at least one picture area based on one or more referenceable frames; a signal indicating a pixel interpolation mode using an unequal pixel weighting of the one or more referenceable frames; and two or more pixel weight values representing the unequal pixel weighting.