Steganography and cryptography are very important techniques used in data security to hide and secure secret messages in transmitted data. This paper will introduce, implement and test a novel methodology which can be used as a secure and highly efficient method of data hiding and data extracting. Some efficiency parameters will be experimentally obtained and compared with other existing methods parameters to prove the efficiency of the proposed methodology.

Steganography is the art of hiding data in another covering medium. This process is very important because it is used in various applications concerned deferent life fields. In this paper we will introduce 3 methods of data steganography: LSB, LSB2 and PVD. These methods will be implemented, tested and analyzed. The obtained experimental results will be compared in order to do some judgment regarding the quality, capacity, hiding time and extracting time.

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The theoretical outcomes and experimental results of new color model implemented in algorithms and software of image processing are presented in the paper. This model, as it will be shown below, may be used in modern real time video processing applications such as radar tracking and communication systems. The developed model allows carrying out the image process with the least time delays (i.e. it speeding up image processing). The proposed model can be used to solve the problem of true color object identification Experimental results show that the time spent during RGI color model conversion may approximately four times less than the time spent during other similar models. .

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