OBTAINING THE CONTEXT TO ENCODE THE LAST POSITION WHEN PERFORMING THE ENCODING Russian patent published in 2017 - IPC H04N19/13 

FIELD: physics.

SUBSTANCE: way of encoding video data contains the context definition for entropy coding bin value that indicates the last significant block coefficient, using index referred to bin, which feature creates a context index on the context by bin index right shift on the value of k and adding the right shifted values to the value of the offset. Define the offset value according to the formula: offset=3*n+((n+1)>>2). The value of k is determined according to the formula: k=(n+3)>>2. And where the value of n is determined according to the formula: n=(log₂(block_size)-2). And where the value of block_size contains a value indicating the size of the block, and encoding the named bin using a specific context.

EFFECT: increasing the efficiency of using the memory of a video encoder, video decoder.

21 cl, 5 dwg, 10 tbl