Dct and Arnold transform is used for a procedure called encryption where encryption is a process of adding extra bits top the information which can be read by the end to end sender and receiver. Example of encryption can defined as let’s consider a sentence ‘’there code is 100052’’ this is very confidential which should be known only to two persons which is sender and receiver. Here sender adds some information using some algorithms and the sentence becomes ‘thereacodeaisa1a0a0a0a5a2’ or a by using a circuit called encoder. The same when the receiver uses the same encoded algorithm to remove the extra bits added here is the original data is obtained by using decoder circuit which performs the inverse operation of that of encoder. To hide the information or a string were a image consists of 4 parts by applying the 2nd level LWT. Low frequency sub bands LL2 and LH2 are then converted by DCT. And the 2 image are converted using DCT and again one of the converted image is the n again applied to ARNOLD. The output of Arnold is the water marked image.

RDWT and SVM, Watermarking, Encoding.

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