基于HRIS光谱图像帧序列相关性的D2PCM无损压缩方法

Lossless D^2PCM Compression Algorithm Based on Correlation of HRIS Spectral Image Sequence

分析了HRIS光谱图像帧序列的相关性 ,并针对这一特性 ,提出了利用D2 PCM方法 ,降低光谱图像序列的谱相关和空间相关 ,减少图像中的冗余 ,从而实现光谱图像的压缩。该方法提高了压缩比和压缩效率 ,算法运算量小 ,快速。

The correlation of HRIS spectral image sequence was analyzed in this paper. A lossless compression algorithm based on D+2PCM coder, which reduced the spectral and spatial correlation, has been developed. The proposed method depressed the image redundancy sufficiently, and increased compression ratio and efficiency. The results of experiments prove it practicable and fast.