M. Ladthawanidphan and Y. Rangsanseri (Thailand)
Digital Watermarking, KLT, Discrete Wavelet Transform
In this paper, we propose a digital watermarking technique for remote sensing multispectral images. The watermark is added to the multispectral image through the Karhunen Love Transform. A multi-stage discrete wavelet transform is applied to the most principal component image and a pseudo-random sequence with a normal distribution is embedded to all high frequency coefficients at above a level adaptive threshold. The experimental result shows that the embedded watermark is robust against various signal processing and compression attack.
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