Image Fragile Watermarking Algorithm Based on BTC Domain
Ningbo Zhu · Science Technology and Engineering · 2009
A digital image fragile watermarking technique based on BTC (Block Truncation Coding) domain is presented. The watermark is embedded into the host image according to the odevity of the reconstruction levels of the BTC quantizer. The watermark extraction need not resort to the original image, and the algorithm has low computation cost, and can be applied to digital image authentication in real-time environment. Experimental results prove that proposed algorithm have good invisibility with the PSNR value above 45 dB. The scheme achieves high performance in tampering detection and location.