FIELD: encoding.
SUBSTANCE: invention relates to a technology for encoding images based on the conversion of an image encoding system. Proposed is a method for decoding images, implemented by means of a decoding apparatus, including the following stages: extracting the quantised conversion coefficients relative to the target block from the bit stream; executing reverse quantisation relative to the quantised conversion coefficients relative to the target block and extracting the conversion coefficients; extracting the residual samples relative to the target block based on reduced reverse conversion relative to the conversion coefficients and generating a restored image based on the residual samples relative to the target block and the prediction samples relative to the target block. The reduced inverse conversion is executed based on a reduced inverse conversion matrix. The reduced inverse conversion matrix constitutes a non-square matrix.
EFFECT: higher efficiency of encoding images.
18 cl, 14 dwg, 3 tbl
| Title | Year | Author | Number |
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|
RU2811758C1 |
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| BDPCM-BASED METHOD FOR ENCODING IMAGES AND APPARATUS THEREFOR | 2020 |
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| TRANSFORMATION FOR MATRIX INTRA PREDICTION IN IMAGE CODING | 2020 |
|
RU2795799C2 |
| ENCODING INFORMATION ON SET OF TRANSFORMATION KERNELS | 2020 |
|
RU2815810C2 |
