18533506. METHOD AND APPARATUS FOR CHROMA INTRA PREDICTION IN VIDEO CODING simplified abstract (HUAWEI TECHNOLOGIES CO., LTD.)

METHOD AND APPARATUS FOR CHROMA INTRA PREDICTION IN VIDEO CODING

Organization Name

HUAWEI TECHNOLOGIES CO., LTD.

Inventor(s)

Alexey Konstantinovich Filippov of Moscow (RU)

Vasily Alexeevich Rufitskiy of Moscow (RU)

Jianle Chen of San Diego CA (US)

METHOD AND APPARATUS FOR CHROMA INTRA PREDICTION IN VIDEO CODING - A simplified explanation of the abstract

This abstract first appeared for US patent application 18533506 titled 'METHOD AND APPARATUS FOR CHROMA INTRA PREDICTION IN VIDEO CODING

Simplified Explanation

The patent application describes a method for directional intra prediction for the chroma component of a picture, involving obtaining an initial intra prediction mode, deriving a chroma intra prediction mode from a look-up table, performing wide-angle mapping, obtaining an angle parameter, and predicting samples based on the angle parameter.

• The method involves obtaining an initial intra prediction mode for the chroma component.
• A chroma intra prediction mode is derived from a look-up table using the initial intra prediction mode.
• Wide-angle mapping is performed on the chroma intra prediction mode to obtain a modified version.
• An angle parameter is obtained for the chroma component based on the modified intra prediction mode.
• Predicted samples of the chroma component are obtained based on the angle parameter.

Potential Applications

This technology can be applied in video coding, image processing, and multimedia applications where efficient intra prediction for chroma components is required.

Problems Solved

This technology solves the problem of efficiently predicting chroma components in pictures with different subsampling ratios in horizontal and vertical directions.

Benefits

The method provides a simplified and efficient way to determine chroma intra prediction modes, reducing the complexity of the prediction process and improving overall picture quality.

Potential Commercial Applications

Potential commercial applications of this technology include video encoding and decoding systems, multimedia devices, and image processing software.

Possible Prior Art

One possible prior art in this field is the use of traditional intra prediction methods for chroma components in picture and video coding standards like H.264 and H.265.

What is the impact of this technology on video compression efficiency?

This technology can significantly improve video compression efficiency by providing more accurate and optimized intra prediction for chroma components, leading to better compression ratios and higher video quality.

How does this method compare to existing techniques for chroma intra prediction?

This method offers a more streamlined and efficient approach to chroma intra prediction by utilizing wide-angle mapping and angle parameters, which can potentially outperform traditional methods in terms of accuracy and computational complexity.

Original Abstract Submitted

Devices and methods of directional intra prediction for chroma component of a picture are provided. The method includes obtaining an initial intra prediction mode of the chroma component, and deriving a chroma intra prediction mode (intraPredModeC) from a look up table (LUT) by using the initial intra prediction mode of the chroma component. The chroma component has different subsampling ratios in horizontal and vertical directions. The method further includes performing wide-angle mapping on the chroma intra prediction mode (intraPredModeC) to obtain a modified intraPredModeC; obtaining an angle parameter for the chroma component based on the modified intraPredModeC; and obtaining predicted samples of the chroma component based on the angle parameter. The method provides the minimum number of entries in the LUT that is used to determine chroma intra prediction mode from the initial chroma intra prediction mode.