IMAGE CODING DEVICE, IMAGE CODING METHOD AND SOFTWARE, AND ALSO IMAGE DECODING DEVICE, IMAGE DECODING METHOD AND SOFTWARE Russian patent published in 2015 - IPC H04N19/50 

FIELD: information technologies.

SUBSTANCE: device comprises a module for production of unit size for a target unit subject to coding, a module to set unit size for an image quantisation control unit, a module of quantisation parameter coding corresponding to the target unit subject to coding, when the produced unit size is more than or equal to the unit size set by means of the setting module for coding of the general quantisation parameter, when the produced unit size is smaller than the set unit size, and the general quantisation parameter was not coded.

EFFECT: making it possible to manage image quality.

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