Reference picture resampling for video coding
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsJonathan GAN, Yue YU, Haoping YU
Life of this patent
Estimating the term…
Abstract
In some embodiments, a video decoder decodes a video bitstream into video frames. A decoder decodes frames of a video from a video bitstream. The decoder further performs inter prediction to decode a current frame of the video by using the decoded frames as reference frames. Performing the inter prediction includes performing reference picture resampling by upsampling a reference frame for the current frame using one or more filters selected from a set of 32 6-tap interpolation filters. This set of interpolation filters is also used for interpolating chroma components for motion compensation. The decoded frame and the decoded current frame are output for display.
Claims20
A method for decoding a video, the method comprising:
- determining one or more reference pictures for a current picture of the video;
- performing inter prediction to decode the current picture of the video by using the one or more reference pictures, wherein performing the inter prediction comprises:
- performing reference picture resampling by upsampling a reference picture for the current picture by using at least a filter selected from a set of interpolation filters with 6 taps for a chroma component of the video.
A method for encoding a video, the method comprising:
- determining one or more reference pictures for a current picture of the video;
- performing inter prediction to encode the current picture by using the one or more reference pictures, wherein performing the inter prediction comprises:
- performing reference picture resampling by upsampling a reference picture for the current picture by using at least a filter selected from a set of interpolation filters with 6 taps for a chroma component of the video.
A non-transitory computer-readable medium, having a computer program and a bitstream stored thereon, wherein the computer program, when executable by one or more processing devices, enables the one or more processing devices to perform the following steps to generate the bitstream:
- determining one or more reference pictures for a current picture of the video;
- performing inter prediction to encode the current picture by using the one or more reference pictures, wherein performing the inter prediction comprises:
- performing reference picture resampling by upsampling a reference picture for the current picture by using at least a filter selected from a set of interpolation filters with 6 taps for a chroma component of the video.
Dependencies are inferred from the claim text.