| 摘要 |
FIELD: information technology.SUBSTANCE: device for encoding moving images for increasing the compression ratio of a moving image signal while maintaining high image quality. To minimise the number of bits required for a residual unit, quantised conversion coefficients are adaptively divided into a plurality of subsets in accordance with the size of the conversion unit, and non-zero quantised conversion coefficients of each subset are scanned and encoded. The intra-prediction mode of the current unit is also determined using reference pixels obtained by filtering reference pixels of the current unit. Therefore, minimisation of the amount of data required for the residual unit from the current unit is possible.EFFECT: efficient encoding of converted residual moving image signals.6 cl, 7 dwg |
