Huawei technologies co., ltd. (20240205406). METHOD AND APPARATUS FOR SIGNALING OF MAPPING FUNCTION OF CHROMA QUANTIZATION PARAMETER simplified abstract

METHOD AND APPARATUS FOR SIGNALING OF MAPPING FUNCTION OF CHROMA QUANTIZATION PARAMETER

Organization Name

huawei technologies co., ltd.

Inventor(s)

Sergey Yurievich Ikonin of Moscow (RU)

Roman Igorevich Chernyak of Moscow (RU)

Timofey Mikhailovich Solovyev of Moscow (RU)

Alexander Alexandrovich Karabutov of Moscow (RU)

Elena Alexandrovna Alshina of Munich (DE)

Jianle Chen of San Diego CA (US)

METHOD AND APPARATUS FOR SIGNALING OF MAPPING FUNCTION OF CHROMA QUANTIZATION PARAMETER - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240205406 titled 'METHOD AND APPARATUS FOR SIGNALING OF MAPPING FUNCTION OF CHROMA QUANTIZATION PARAMETER

The abstract describes a method for a decoder to obtain a chrominance quantization parameter (qp) for chrominance components based on a luminance qp for a luminance component.

• Parsing a received bitstream containing a sequence parameter set (sps) to extract the luminance qp and information of a mapping function (ξ) linking a qp index (qpi) to a chrominance qp (qpc).
• Obtaining the qpi based on the luminance qp.
• Obtaining the mapping function based on the information extracted.
• Calculating the qpc using the obtained mapping function and qpi.

Potential Applications: - Video encoding and decoding systems. - Multimedia applications requiring accurate color representation.

Problems Solved: - Efficient chrominance quantization parameter determination. - Improved color accuracy in video processing.

Benefits: - Enhanced video quality. - Simplified chrominance quantization parameter calculation.

Commercial Applications: Title: "Advanced Video Encoding Technology for Enhanced Color Accuracy" This technology can be utilized in video streaming services, broadcast television, and digital cinema for superior color representation, leading to increased viewer satisfaction and improved visual experiences.

Questions about the technology: 1. How does this method improve color accuracy in video processing?

  This method enhances color accuracy by deriving chrominance quantization parameters based on luminance values, ensuring consistent and precise color representation.

2. What are the potential implications of using this technology in multimedia applications?

  By implementing this technology in multimedia applications, users can experience improved color fidelity and overall visual quality in their content.

Original Abstract Submitted

a method of obtaining a chrominance quantization parameter (qp) for chrominance components based on a luminance qp for a luminance component, wherein the method is performed by a decoder, and comprises parsing a received bitstream comprising a sequence parameter set (sps) to obtain the luminance qp and information of a mapping function (�) which associates a qp index (qpi) to a chrominance qp (qpc), wherein the chroma qp mapping table is signaled in the sps; obtaining the qpi based at least in part on the luminance qp; obtaining the mapping function based on the obtained information of the mapping function; and obtaining a qpc based on the obtained mapping function and the obtained qpi.