Encoder-assisted adaptive video frame interpolation

摘要

The disclosure is directed to techniques for encoder-assisted adaptive interpolation of video frames. According to the disclosed techniques, an encoder generates information to assist a decoder in interpolation of a skipped video frame, i.e., an S frame. The information permits the decoder to reduce visual artifacts in the interpolated frame and thereby achieve improved visual quality. The information may include interpolation equation labels that identify selected interpolation equations to be used by the decoder for individual video blocks. As an option, to conserve bandwidth, the equation labels may be transmitted for only selected video blocks that meet a criterion for encoder-assisted interpolation. Other video blocks without equation labels may be interpolated according to a default interpolation technique.

主权项

1. A video decoding method comprising:
receiving information encoding a video frame; deciding whether said video frame is an intentionally skipped video frame based on one or more dynamic frame skipping criteria, said information comprising motion vectors encoding blocks of the video frame and further information specifying one or more interpolation techniques to assist in interpolation of one or more video blocks within said video frame if said video frame is an intentionally skipped video frame; and applying the information to interpolate said one or more video blocks of the intentionally skipped video frame using said one or more interpolation techniques, wherein said one or more interpolation techniques include one or more motion calculations using one or more forward motion vectors and one or more backward motion vectors, wherein said one or more forward motion vectors are included in the information for the intentionally skipped video frame, and wherein said one or more backward motion vectors are not included in the information for the intentionally skipped video frame but are included in information for a predictive video frame received subsequent to the intentionally skipped video frame.