Re: [WM]: Orthonormal vectors

[Micro Mysore <micromysore@gmail.com>]

yes, but the correlations strength detected at the detector depends on several factors like

1. order of insertion
2. strength of individual vectors
3. correlation of the inserted vector with the host

AFA LPF is concerned, the vectors will survive if can survive when they wer= e individually marked.
AFA image quality, the combined perturbation should be the same, and hence the energy available will be lesser for each of the
vectors than what would be available if they were individually inserted.


-mic


On 11/16/05, madan mohan <madannill@yahoo.co.in> wrote:
>
> Hello watermarkers,
>
> Is it possible to add two or more random orthonormal vectors without
> affecting image quality. If it is possible, will there be any impact
> if the image is then low pass filtered? Can the presence of those
> added orthonormal vectors can be detected using correlation after low
> pass filtering?
>
> thank you in advance,
>
> regards
> Madan
>
>



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