MATRIX ENCODING METHOD AND DEVICE THEREOF, AND MATRIX DECODING METHOD AND DEVICE THEREOF

摘要

The present invention provides a method and an apparatus for coding and a method and an apparatus for decoding a matrix. The coding method includes: dividing a matrix into layers according to a preset quantity of divided layers, and grouping matrix elements into different layers; performing, according to a determined layer number of a coded layer and in an order of layers one by one, coding processing on matrix elements at each layer to be coded; for a layer having a layer number less than or equal to the layer number of the coded layer, writing residual data between an original matrix element value corresponding to the layer and a corresponding matrix element predicted value into a bit stream; for a layer having a layer number greater than the layer number of the coded layer, writing no coded data of the layer into the bit stream; and coding the layer number of the coded layer and writing the coded layer number of the coded layer into the bit stream. The technical solution according to the present invention improves a compression ratio of a matrix and reduces a bit rate occupied for transmitting the matrix.