According to this, the secret image that has been preprocessed will be hidden into high-resolution sub-image, then via the inverse CL multi-wavelet transformation, the disguise image is obtained in which the secret image was hidden.

• 对伪装图像进行向量小波变换；提取出调整后的机密图像数据；施行逆调整；恢复出原始机密图像.