Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Watermarking
is the process of inserting predefined patterns into multimedia data in a way
that the degradation of quality is minimized and remain at an imperceptible
level. The operation of embedding and extraction of watermark are done in high
frequency domain of Discrete Wavelet Transform (DWT) since small modifications
in this domain are not perceived by human eyes. This watermarking scheme deals
with the extraction of the watermark information in the absence of original
image, hence the blind scheme was obtained. Peak Signal to Noise Ratio (PSNR)
is computed to measure image quality. The experimental evaluation of the
proposed method shows very good results in terms of robustness and transparency
to various attacks such as median filtering, Gaussian noise, and JPEG
compression. Our project introduces a discrete wavelet transform (DWT) digital
watermark algorithm based on human vision characters. By using this technique
watermarking signal is embedded into the high frequency band of wavelet
transformation domain.
Country : India
IRJIET, Volume 6, Issue 5, May 2022 pp. 225-228