METHOD FOR ENCODING AND DECODING OF IMAGES, ENCODING AND DECODING DEVICE AND CORRESPONDING COMPUTER PROGRAMS Russian patent published in 2022 - IPC H04N19/60 H04N19/119 H04N19/18 H04N19/176

Abstract RU 2765300 C1

FIELD: image processing.

SUBSTANCE: inventions group relates to the field of image processing, namely to coding and decoding of digital images and sequences of digital images. A method is proposed for decoding a data signal representing at least one image subdivided into regions that were previously encoded. Moreover, the areas contain the current area to be decoded, containing data in which at least one data element has been assigned a sign, and these data are direct transform coefficients. The method comprises the stage of entropy decoding of the first current region. Next, based on non-zero decoded data of the current region, a determination is made whether the sign of at least one data element is hidden

EFFECT: improving the efficiency of encoding/decoding images.

4 cl, 8 dwg

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RU 2 765 300 C1

Authors

Henry, Felix

Clare, Gordon

Dates

2022-01-28—Published

2021-06-29—Filed