Blind Wavelet Based Logo Watermarking Resisting to Cropping

In this paper we propose a blind wavelet-based logo watermarking scheme focusing on resisting to cropping. The binary logo is embedded in the LL₂ sub-band of host image, using quantization technique. For increasing robustness of proposed algorithm two dimensional parity bits are added to the binary logo. Experimental results show that the proposed watermarking method can resist not only cropping attack, but also some common signal processing attacks, such as JPEG compression, average and median filtering, rotation and scaling.