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A high capacity digital watermarking technique for the authentication of colour images
A. Al-Gindy, H. Al-Ahmad, R. Qahwaji,
Published in Institute of Electrical and Electronics Engineers (IEEE)
Pages: 37 - 42
This paper deals with colour image authentication technique using a high capacity watermarking algorithm. The watermark is embedded into the green channel ofthe host image by modifying the very low frequency coefficients of the DCT transformation. The new algorithm can embed watermarking information in up to 25% ofthe host image size. The new technique can resist classical attacks such as JPEG compression, low pass filtering, median filtering, cropping, and scaling attacks. Moreover, the recovery method is blind since it does not need the original host image for extraction. ©2009 IEEE.
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    High capacity