基于频谱编码的小波压缩图像在有噪信道中的传输

WAVELET COMPRESSED IMAGE TRANSMISSION OVER NOISY CHANNEL BASED ON THE SPECTRUM CODING

研究了利用频谱编码传输技术在有噪信道中传输小波图像压缩数据 .图像压缩采用Said等提出的分层树中的集分割 (SPIHT)小波压缩编码器 .根据图像数据的重要性是从高到低排序的特点 ,在利用基本的双极性线性相位编码的基础上提出了不等错误保护的 4ASK编码方案 。

The transmission of compressed image over noisy channel was studied at the spectrum coding system.The image is compressed with the wavelet encoder based on Set Partitioning in Hierarchical Trees(SPIHT).By virtue of the character of the important information of image being transmitted firstly,it was presented the unequal error protection 4ASK (amplitude shift key)based on bipolar linear-phase coding in the spectrum coding and achieved better performance for reduced noise.