IMAGE DECODING METHOD, IMAGE ENCODING METHOD, IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, PROGRAMME AND INTEGRATED CIRCUIT Russian patent published in 2016 - IPC H04N19/30 

FIELD: physics.

SUBSTANCE: image decoding method for decoding an encoded stream generated by encoding, which includes orthogonal transformation and quantisation, which includes a plurality of processing blocks and a header for the said processing blocks, wherein the encoded stream is generated by encoding a moving image, at least one of the said processing blocks is broken down into one or more hierarchical levels, each including one or more sub-blocks whose size is smaller than the size of the said processing block, wherein the method comprises the steps of: requesting an external system to send the said encoded stream; receiving the requested encoded stream from the external system; parsing depth information stored in the header; decoding the processing block by performing inverse quantisation.

EFFECT: improving image quality and encoding efficiency at the same time.

12 cl, 54 dwg