A Semi-Blind Watermarking of Color Images Using Slant Transform, DWT and SVD
Roshan Koju, Shashidhar Ram Joshi · International Journal of Image Graphics and Signal Processing · 2017
This paper presents a robust watermarking for still digital images based on a Slant transform, discrete wavelet transforms and Singular Value Decomposition (SVD).The cover image is transformed using discrete wavelet transform and singular value decomposition while watermark image is transformed using slant transform.It is watermarked by replacing singular values of the highfrequency and low-frequency component of an original image by that of slant transformed watermarks.Experimental results show that our method guarantees the robust resistance against no attack and the robustness against common image processing attacks such as JPEG compression, cropping, histogram equalization, sharpening etc.