  The paper is aimed for a wavelet based steganographic or watermarking
technique in frequency domain termed as WASTIR for secret message or image
transmission or image authentication. Number system conversion of the secret
image by changing radix form decimal to quaternary is the pre-processing of the
technique. Cover image scaling through inverse discrete wavelet transformation
with false Horizontal and vertical coefficients are embedded with quaternary
digits through hash function and a secret key. Experimental results are
computed and compared with the existing steganographic techniques like WTSIC,
Yuancheng Lis Method and Region-Based in terms of Mean Square Error (MSE), Peak
Signal to Noise Ratio (PSNR) and Image Fidelity (IF) which show better
performances in WASTIR.
