RE: [WM]: help me regarding to benchmarks?

["mohammad awrangjeb bin nurul alam" <awrangjeb@hotmail.com>]

Dear Farah,

1. Most of the existing watermarking techniqes can not survive in simple attacks like geometric distortions, noising, lossy
compression. To test the robustness of a particular technique and hence to compare it to the other techniques, the benchmark
'Stirmark' is widely used.

2. As long as you maintain the parameters like window size (median filtering), aspect ratios (for resizing), I think stirmark
attacks and yours ones are same.

3. I use stirmark attack. To use it
   - copy your media files (say Lena image, normally I use RGB image) at
\StirMarkBenchmark_4_0_129\Media\Input\Images\Set1

   - run the file \StirMarkBenchmark_4_0_129\Bin\Benchmark

   - the stirmark attacked images of Lena are at
\StirMarkBenchmark_4_0_129\Media\Output\Images\Set1

You can use the attacked images to test your technique.

4. I think stirMark does not take JPEG files as inputs. You better convert your watermarked image to .bmp file. If you use Matlab it
is very easy.

For more information please read stirmark SMBsettings.ini, Compilation.doc, Copyright notice.doc, Project overview.doc, SMB
Manual.doc.

-awrangjeb


>From: farah mohd <mee_telur@yahoo.com>
>To: <watermarking@watermarkingworld.org>
>Subject: [WM]: help me regarding to benchmarks?
>Date: Wed, 28 Dec 2005 18:18:59 -0800 (PST)
>
>i'm quite new in this watermarking technique and analysis
>   my question is regarding to the benchmark such as optimark, 
>stirmark, and checkmark.
>   1. i would like to know what is the use and specialty of those kind 
>of benchmark in watermarking.
>   2. if we perform attacks such as median filtering, and resizing by 
>using other software such as irfanview.is it the same attack perform by 
>those benchmarks that i mentioned above.
>   3. i've download stirmark and optimark but still doesnt know how to 
>use it. pls somebody teach me step by step how to use it. i hope 
>somebody pls tell me if there is any simple benchmark program.
>   4. i've done watermarking using jpeg image. can that jpeg image use 
>in those benchmarks software.
>
>   thanks for cooperation.
>
>   regards
>
>   farah
>


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