METHOD OF TRANSMISSION OF ADDITIONAL INFORMATION When sharing the vector quantization and fractal image encoding

摘要

A method for transmitting additional information in the sharing of vector quantization and fractal image coding, comprising the steps of a) digitizing an original image, b) compressing it using fractal compression method, c) inserting an additional information, d) decompressing the compressed image, and e) isolating additional information, characterized in that during compression of the original image by using a combination of vector quantization and fractal compression method in the orientation indices q Domain blocks or blocks of codebook recorded binary sequence of three digits representing the additional information further considering this additional information is performed turn processed domain, or a block of codebook search luminance coefficients and contrast the method of least squares, the respective optimum values, at which minimize expression: ! ,! where {dij} and {rij} - are respectively the pixel values ​​of domain (blocks codebook) and rank region of - luminance factor, s - contrast ratio, resulting in finding the optimum domain (block from the codebook) with the built-in extra information encoding unit rank, after which the domain indices, coefficients of brightness and contrast, the additional information is transmitted over the communication channel.