Interpolation method for chroma and filter

A technology of interpolation filter and interpolation method, which is applied in the field of video coding and decoding, can solve problems affecting interpolation performance and complex calculations, and achieve the effect of improving interpolation performance
CN103974078AActive Publication Date: 2014-08-06HISENSE VISUAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HISENSE VISUAL TECH CO LTD
Publication Date
2014-08-06

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Abstract

The invention discloses an interpolation method for chroma. The method includes: determining the pixel precision of interpolation; determining the coordinates of an interpolation sub-pixel between integer pixel points; using a low-tap interpolation filter to perform two-dimensional separation interpolation on the interpolation sub-pixel according to the coordinates. The invention further discloses a filter. Due to the fact that the coordinates of the interpolation sub-pixel is determined between the pixel points and the low-tap interpolation filter such as a four-tap interpolation filter is used to perform two-dimensional separation interpolation on the interpolation sub-pixel according to the coordinates, interpolation performance is increased for bilinear interpolation.
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Description

technical field

[0001] The present application relates to the technical field of video encoding and decoding, and in particular to a sub-pixel interpolation method and filter for chroma. Background technique

[0002] With the gradual popularization of many high-definition digital products such as digital TV, Internet high-definition video, digital camera, digital video camera, etc., the existing video codec standards can no longer meet the requirements, especially for high-resolution video, such as 4Kx2K very high resolution . Therefore, people look forward to the development of a new generation of high-performance video coding standards that can adapt to ultra-high-definition video.

[0003] In the video coding and decoding technology, the sub-pixel interpolation technology can improve the accuracy of motion prediction, which has a very positive effect on the improvement of the entire coding and decoding performance. Sub-pixel interpolation was first used in MPEG-1, but i...

Claims

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