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Polar co-ordinates shape adaptive discrete transform-based watermarking scheme for arbitrarily-shaped object

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2 Author(s)
Yun-Ho Ko ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea ; Seong-Dae Kim

A new watermarking scheme for arbitrarily-shaped image is proposed. Using co-ordinates conversion to log-polar and polar co-ordinates shape adaptive discrete transform (PSADT), the proposed watermarking method can be applied to any arbitrarily-shaped image such as MPEG-4 VOP and is much more robust to geometrical attacks than conventional ones

Published in:

Electronics Letters  (Volume:37 ,  Issue: 22 )