Synthetic method for mosaic image and device thereof

The invention relates to the technical field related to the field of information safety and signal treatment and particularly relates to a synthetic method for a mosaic image and a device thereof. The synthetic method comprises the following steps: selecting a plurality of original images as an image library in advance; selecting one original image from the image library as a main image; if no secondary mosaic image exists, selecting one original image from the image library as the secondary mosaic image and embedding the secondary mosaic image into the main image so as to obtain the main image after being embedded; and otherwise, replacing the main image after being planted by the secondary mosaic image and embedding the secondary mosaic image into the main image. According to the synthetic method provided by the invention, the problem of hiding and transferring of more information is solved. A multilayer mosaic image can be utilized to realize the hiding of multilayer information as well as the hiding and transferring of more information. The multilayer mosaic image has a potential application value in a series of applications, such as information hiding, image retrieval, computer art, philosophy, computer simulation, scene conversion, image transferring, and the like.