Performance of quantization factor in H.261 video coding was investigated using compression techniques. The large quantization causes heavy distorted video sequences while low quantization generates large amount of da...Performance of quantization factor in H.261 video coding was investigated using compression techniques. The large quantization causes heavy distorted video sequences while low quantization generates large amount of data for video sequencing. The quantization algorithm of H.261 video coding changes the quantization factor and adjusts the output rate. The results show that the good quality compression image is obtained when quantization factor ranges between 1 and 15.展开更多
This paper presents an adaptive fuzzy control scheme based on modified genetic algorithm. In the control scheme, genetic algorithm is used to optimze the nonlinear quantization functions of the controller and some key...This paper presents an adaptive fuzzy control scheme based on modified genetic algorithm. In the control scheme, genetic algorithm is used to optimze the nonlinear quantization functions of the controller and some key parameters of the adaptive control algorithm. Simulation results show that this control scheme has satisfactory performance in MIMO systems, chaotic systems and delay systems.展开更多
文摘Performance of quantization factor in H.261 video coding was investigated using compression techniques. The large quantization causes heavy distorted video sequences while low quantization generates large amount of data for video sequencing. The quantization algorithm of H.261 video coding changes the quantization factor and adjusts the output rate. The results show that the good quality compression image is obtained when quantization factor ranges between 1 and 15.
文摘This paper presents an adaptive fuzzy control scheme based on modified genetic algorithm. In the control scheme, genetic algorithm is used to optimze the nonlinear quantization functions of the controller and some key parameters of the adaptive control algorithm. Simulation results show that this control scheme has satisfactory performance in MIMO systems, chaotic systems and delay systems.
