中文摘要：

为了解决彩色图像的无损压缩问题,提出了一种改进的整型KL变换（Improved Integer Karhunen-Lo-eve Transform,IIntKLT）和SPECK编码相结合的彩色图像压缩方法.该算法首先设计了一种新的IIntKLT方法,以去除R,G,B颜色分量之间的相关性,并保证了变换的完全无损可逆性,然后再结合改进的SPECK编码方法进一步的提高了编码性能.通过对标准测试彩色图像的实验结果表明：此方法无损压缩比平均提高0.1 bpp,有损压缩下,最高优于JPEG2000 0.88 dB.

英文摘要：

A lossless compression method for 3-D color images is proposed based on Improved Integer Karhunen-Loeve Transform（IIntKLT）,incorporated with SPECK for color image compression.First,the IIntKLT is applied to reduce the redundancies between the color components,so that the complete reversible transform is guaranteed,and then by using SPECK,the performance of coding is improved.The results of experimentation of standard testing color image,show that the new approach has an increase of 0.1 bpp in lossless image compression,and in the case of complete reversible lossy compression,compared with JPEG2000,it at most has a increase of 0.88 dB.