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Apparatus and method for video motion compensation with selectable interpolation filter

An interpolation filter and filter technology, applied in the field of video processing, can solve the problems of significant signaling overhead and achieve the effect of increasing signaling overhead and reducing size

Active Publication Date: 2018-04-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The form of the adaptive filter and the need to transmit multiple filters for sub-pixel positions lead to significant signaling overhead for the adaptive interpolation filtering technique

Method used

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  • Apparatus and method for video motion compensation with selectable interpolation filter
  • Apparatus and method for video motion compensation with selectable interpolation filter
  • Apparatus and method for video motion compensation with selectable interpolation filter

Examples

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Embodiment Construction

[0095] figure 2 A video encoder according to an embodiment of the present invention is shown, in particular a video encoder 200 for predictively encoding a video stream of a subsequent frame into an encoded video bit stream according to motion compensation. further, image 3 An interpolation filter of a video encoder according to an embodiment of the present invention is shown.

[0096] Video encoder 200 includes, inter alia, a frame buffer 207 and a prediction unit.

[0097] The frame buffer 207 is used for storing at least one reference frame or image of the video stream. The prediction unit 210 is configured to generate a prediction block of a current block of a current frame from a reference block of a reference frame according to a motion vector having fractional pixel resolution. The fractional pixel resolution defines an integer pixel position and a plurality of sub-pixel positions.

[0098] Further, the prediction unit 210 is configured to insert the reference blo...

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PUM

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Abstract

The present invention relates to a video coder for predictive coding a video stream of subsequent frames according to motion compensation into an encoded video bit stream, comprising a frame buffer (207) configured to store at least one reference frame of the video stream, a prediction unit (210) configured to generate a prediction block of a current block of a current frame from a reference blockof the reference frame according to a motion vector having fractional-pel resolution, said fractional-pel resolution defining an integer-pel position and fractional-pel positions. The prediction unit(210) is configured to interpolate the reference block according to the fractional-pel resolution via one of the at least three following interpolation filters: a blurring interpolation filter (302),a tap filter (303), and the tap filter (303) followed by a sharpening filter (311).

Description

technical field [0001] The present invention relates generally to the field of video processing, to video motion compensation apparatus, and in particular to video encoders and video decoders for supporting motion compensation for predicting frames in video. The invention also relates to an encoding method for encoding a video stream using motion compensation; and a decoding method for decoding a video stream using motion compensation. Finally, the invention relates to a computer program having a program code for carrying out such a method. Background technique [0002] In the field of video processing, especially in the field of hybrid video coding and compression, the use of inter- and intra-frame prediction and transform coding is known. These hybrid video coding techniques are used in known video compression standards such as H.261, H.263, MPEG-1, 2 and 4, H.264 / AVC or H.265 / HEVC. [0003] figure 1 A video encoder according to the prior art is shown. The video encode...

Claims

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Application Information

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IPC IPC(8): H04N19/50H04N19/82H04N19/523
CPCH04N19/82H04N19/523H04N19/117H04N19/176H04N19/86H04N19/51
Inventor 马克西姆·波里索维奇·瑟乔夫维克多·阿列克谢耶维奇·斯蒂平罗曼·伊戈列维奇·切尼亚克谢尔盖·尤利耶维奇·伊科宁
Owner HUAWEI TECH CO LTD
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