ENCODING METHOD AND DECODING METHOD OF QUANTIZATION MATRIX, AND DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an encoding method and a decoding method of a quantization matrix, and a device using the same.SOLUTION: An encoding method of a quantization matrix includes steps of: determining a quantization matrix used for quantization and quantizing; determining a prediction system of the quantization matrix used for the quantization; and encoding information on the quantization matrix with the determined prediction system. The prediction system is either one of a prediction system among coefficients in the quantization matrix, and a duplicate of the quantization matrix.SELECTED DRAWING: Figure 1