US Patent Application 18232125. IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION, AND METHOD FOR TRANSMITTING BITSTREAM simplified abstract

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IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION, AND METHOD FOR TRANSMITTING BITSTREAM

Organization Name

LG ELECTRONICS INC.

Inventor(s)

Hyeong Moon Jang of Seoul (KR)

Jin Heo of Seoul (KR)

Jung Hak Nam of Seoul (KR)

Jangwon Choi of Seoul (KR)

IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION, AND METHOD FOR TRANSMITTING BITSTREAM - A simplified explanation of the abstract

This abstract first appeared for US patent application 18232125 titled 'IMAGE ENCODING/DECODING METHOD AND APPARATUS FOR PERFORMING INTRA PREDICTION, AND METHOD FOR TRANSMITTING BITSTREAM

Simplified Explanation

The patent application describes a method and apparatus for encoding and decoding images.

  • The method includes determining whether to use intra prediction for a current chroma block based on prediction information for the block.
  • The intra prediction mode of the current chroma block is derived based on the intra prediction mode of a corresponding luma block and intra chroma prediction mode information of the current chroma block.
  • If intra prediction is applied to the current chroma block, a prediction block is generated by performing intra prediction based on the intra prediction mode of the current chroma block.
  • If the intra prediction mode of the corresponding luma block is not available, a default intra prediction mode is used to derive the intra prediction mode of the current chroma block.


Original Abstract Submitted

An image encoding/decoding method and apparatus are provided. An image decoding method according to the present disclosure comprises determining whether to apply intra prediction to a current chroma block based on information on prediction of the current chroma block, deriving an intra prediction mode of the current chroma block based on an intra prediction mode of a corresponding luma block corresponding to the current chroma block and intra chroma prediction mode information of the current chroma block, when intra prediction applies to the current chroma block, and generating a prediction block of the current chroma block, by performing intra prediction based on the intra prediction mode of the current chroma block. When the intra prediction mode of the corresponding luma block is not present, the intra prediction mode of the current chroma block is derived based on a default intra prediction mode.

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