Geometric intra prediction

Abstract

The use of parametric models to capture and represent local signal geometry allows a new geometric intra prediction scheme to better encode video images. The encoding scheme gives the video encoder the flexibility and scalability to match the video frame content with the desired computational complexity. It also allows the encoder to encode the images more efficiently using intra prediction because it reduces the artificial edges that occur during standard intra encoding.

Description

technical field [0001] The present invention relates to the encoding of digital video information and the compression of this information, and relates the encoding of the information to geometric information within an image. Background technique [0002] In previous video coding standards such as H.263, MPEG-1 / 2 and MPEG-4 Video, intra prediction was done in the transform domain. H.264 / AVC is the first video coding standard for intra prediction in the spatial domain. It employs directional space prediction to extrapolate the edges of previously decoded parts of the current picture. While this improves the predicted signal quality and thus coding efficiency compared to previous video coding standards, it is not yet optimal in exploiting the geometrical redundancy that exists along edges, contours and directional textures. Also, it cannot adapt to various computational complexity requirements. First, the number of intra prediction modes is fixed, so it lacks adaptability an...

AI Technical Summary

Problems solved by technology

In this invention, we propose a new geometric intra prediction scheme that addresses both the adaptability and scalability issues in terms of matching video frame content and computational The problem of spurious edges in standard intra-coded prediction with more bits to encode the residual

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