为了对图像进行无损隐秘传输，给出了一种新的基于整数线性变换处理的无损隐秘传输方法。该方法是用整数线性变换后的矢量替换原宿主矢量，其不需保存可修改矢量区域信息，就可较好地嵌入大数据量的机密信息在公共信道进行传输，而且在接收端提取机密信息后，能无损恢复原宿主图像。该方法已经过了测试，并获得了较好的结果，适用于医学图像中存储病人的病历信息及遥感、军事图像的信息隐秘传输等领域。

In order to realize lossless covert communication in image, a novel lossless covert communication method based on integer linear transform was proposed. The method uses integer linear transformed vector instead of original vector and need not to save the message of the revisable vector. Using the method the host data with large capacity secret information embedded can be transmitted in open channels. Host image can be recovered without any distortion from the marked image after the hidden data have been extracted. The scheme had been simulated and good experimental results were achieved. It can be applied to keeping case history in medical images and can also be used for covert communication in remote sensing images, military images and etc.