Title :
Requantization codebook design using particle-pair optimizer
Author :
Ji, Zhen ; Zhou, Jiarui ; Liao, Huilian ; Wu, Q.H.
Author_Institution :
Texas Instrum. DSPs Lab., Shenzhen Univ., Shenzhen
Abstract :
A new algorithm of optimal requantization codebook design using particle-pair optimizer (PPO) is proposed to provide an effective way for image transmission over multi-speed communication system with minimal transmission delay. PPO is used for optimal codebook design in the first and second quantization respectively. In the second quantization, global distortion is used as the fitness value instead of second quantization distortion. Simulation results demonstrated that the proposed algorithm is able to achieve higher PSNR value with less transmission delay in comparison with conventional codebook optimization strategies.
Keywords :
image coding; multimedia communication; particle swarm optimisation; quantisation (signal); codebook optimization strategies; image transmission; multispeed communication system; optimal requantization codebook design; particle-pair optimizer; quantization distortion; transmission delay; Algorithm design and analysis; Bit rate; Communication system traffic; Delay effects; Design optimization; Discrete cosine transforms; Image coding; PSNR; Quantization; Virtual manufacturing;
Conference_Titel :
Evolutionary Computation, 2008. CEC 2008. (IEEE World Congress on Computational Intelligence). IEEE Congress on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-1822-0
Electronic_ISBN :
978-1-4244-1823-7
DOI :
10.1109/CEC.2008.4631040
