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17916459. TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR simplified abstract (LG ELECTRONICS INC.)

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TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR

Organization Name

LG ELECTRONICS INC.

Inventor(s)

Moonmo Koo of Seoul (KR)

Seunghwan Kim of Seoul (KR)

Jaehyun Lim of Seoul (KR)

TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 17916459 titled 'TRANSFORM-BASED IMAGE CODING METHOD AND DEVICE THEREFOR

Simplified Explanation

The abstract describes an image decoding method that involves performing a non-separable inverse transform on a transform block. The method includes receiving a restriction flag to determine whether to perform the non-separable inverse transform in a low frequency area of the block. It also involves receiving an activation flag to indicate whether to activate the non-separable inverse transform. The method further includes parsing a transform index based on the restriction flag and activation flag, and performing the non-separable inverse transform on the transform block using the transform index.

  • The method involves receiving a restriction flag to determine whether to perform a non-separable inverse transform in a low frequency area of a transform block.
  • An activation flag is received to indicate whether to activate the non-separable inverse transform.
  • A transform index is parsed based on the restriction flag and activation flag.
  • The non-separable inverse transform is performed on the transform block using the transform index.

Potential Applications

  • Image and video decoding systems
  • Multimedia applications
  • Video streaming platforms

Problems Solved

  • Efficient decoding of images and videos
  • Optimization of non-separable inverse transform in low frequency areas
  • Flexibility in activating and restricting the transform based on specific requirements

Benefits

  • Improved image and video decoding performance
  • Enhanced efficiency in processing low frequency areas
  • Customizable activation and restriction of the non-separable inverse transform


Original Abstract Submitted

An image decoding method according to the present document may comprise the steps of: receiving, at a general restriction information level, a restriction flag for restricting whether to perform a non-separable inverse transform in a low frequency area of a transform block; receiving, at a sequence parameter set level, an activation flag indicating whether to activate the non-separable inverse transform; parsing a transform index used for the non-separable inverse transform, on the basis of the restriction flag and the activation flag; and performing the non-separable inverse transform on the transform block on the basis of the transform index.

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