METHOD AND DEVICE FOR FAST AND EFFICIENT COMPRESSION AND DECOMPRESSION OF IMAGES Russian patent published in 2020 - IPC H04N19/13 G06T9/00 

FIELD: data processing.

SUBSTANCE: present invention relates to compression and decompression of data, in particular, for large images. Said result is achieved by encoding with transformation of image data to form a visual representation using transformation coefficients, serializing visual representation bit planes using transform coefficients and optimum prefix bit encoding in a bit plane for each bit plane, having a common local context, encoding a series of zero bit sequences in the bit plane with lengths and storing coefficients, received after optimal prefix encoding and encoding the zeros series of symbols, starting from the sign and further bits in order of significance, starting from the most significant bit to further to the least significant bit in the lookup table in the header section.

EFFECT: technical result is provision of fast and efficient compression providing dynamic trade-off between use of bandwidth and image quality.

14 cl, 3 dwg