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[WM]: Inserting a watermark by the Cox algoritm and JPEG compression with quality below 75%
- To: <watermarking@watermarkingworld.org>
- Subject: [WM]: Inserting a watermark by the Cox algoritm and JPEG compression with quality below 75%
- From: "Puig Junoy, Maria Teresa" <MariaT.Puig@getronics.com>
- Date: Tue, 26 Oct 2004 17:13:46 +0200
- Delivered-To: zeus-waterma-watermarking-list@phoebe.hosting4u.net
- Sender: watermarking-owner@watermarkingworld.org
- Thread-Index: AcS7bmOaK4iWjT/kRk27n2BvdHUgtw==
- Thread-Topic: Inserting a watermark by the Cox algoritm and JPEG compression with quality below 75%
Title: Inserting a watermark by
the Cox algoritm and JPEG compression = with quality below 75%
Hi,
I codified the Cox = algoritm and I tried the JPEG compression to an image with
a inserted = watermark. When the compression JPEG is done with >= = 75%, the evalutation of the extracted watermark
is acceptable, but when = the compression is done with lower quality, the results are not = good.
I know that the quality performs the = quantization tables, but knows anyone what would be the
problem? =
I have no idea. I will be very = grateful for any idea somebody can suggest me.
Thanks for advanced.
tpj
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