在前人应用数论对图像进行同时压缩和加密研究的基础之上,结合图像复用技术,提出了一种改进算法。算法首先将4幅相同尺寸但内容不同的图像利用图像复用技术复合成1幅图像,再对复合的图像应用数论方法进行加密和压缩。仿真实验结果表明,算法具有较好的加密效果和压缩比。
On the basis of the study of simultaneous image compression and eneryption using number theory,combined with image multiplexing tech- nique,an improved algorithm is prolapsed. Firstly,four different images with the same size are multiplexed into one image. Then, uses number theory, knowledge,the muhiplexing image is encrypted and compressed. The simulation experiment results show that the proposed algorithm has a good encryp- tion effect and compression ratio.