METHOD FOR TRANSMITTING ADDITIONAL INFORMATION DURING COMBINED USAGE OF VECTOR QUANTIZATION AND FRACTAL ENCODING OF IMAGES Russian patent published in 2007 - IPC H04N7/08 

FIELD: electric communications, namely, area connected to reduction of excessiveness of information being transmitted.

SUBSTANCE: in accordance to the invention, during encoding of image by means of combined usage of vector quantization and fractal compression method, additional information is integrated into lower bits of domain indexes or code book blocks. Testing inversion procedure is applied to remaining bits of domain indexes of original image or code book blocks. After integration of additional information and optimization of domain indexes and code book blocks, these data together with information about indexes of their orientation, brightness and contrast coefficients are transferred through a communication channel. At receiving side, additional information is extracted and original image is restored.

EFFECT: transmission of image with additional information (concealed information, another image or other useful message) without increasing the volume of transferred data.

3 dwg, 1 tbl