【摘要】 针对原SPIHT算法存在扫描的重复且没有充分考虑人眼的视觉特性(HVS)等不足,通过引入人眼视觉特性、DPCM编码及建立最大值表等思想对原算法进行了改进。仿真结果表明,改进算法较原算法在重构图像的主观效果、峰值信噪比和编解码效率上都得到了提高。更多还原

【Abstract】 Due to the repeated scanning and no considering the HVS of SPIHT, the lifting scheme, HVS, DPCM and building the max list are adopted to improve the original SPIHT. Experimental results demonstrate that the subjective quality and the peak SNR of the reconstruction image and the coding and decoding speed are all raised.更多还原