RE: RE: [WM]: Purpose of using lena image!!!

[JJTC.COM <jjtc.com@gmail.com>]

Researchers must consider repeatable results by the community of their research efforts.  Researchers should also use experiments
that are meaningful and show more than just a few examples.

Prof. Delp correctly points out the limitations of the over used F16, Cameraman, Baboon, Lena, etc. (I will note this set as
{F16…Lena} in the remainder of this e-mail). One reason for collections of test media existing (or being developed) across
multiple disciplines is so researchers can have common sets from which to select.  These common sets can help to establish
repeatable results.  Since nearly everyone has access to the limited {F16…Lena} set being discussed in this thread, these images
have been used over and over again.  With the improvements of image processing and the diversity of digital media available to
researchers, many more updated/current formats are available.

Researchers should perform many experiments and discuss the results.  One frustration expressed by many reviewers is that
researchers have a tendency to express claims based on very little experimentation using limited test sets.

In the past, the {F16…Lena} set has played a role in providing experimentation on sources that are widely available.  These images
have a "long" history in research but it is time to move on.  Do not limit yourselves to the {F16…Lena} set, make your own sets,
and use community-shared sets. Be creative!

--

Neil

Neil F. Johnson, Ph.D.
http://www.jjtc.com
nfj@jjtc.com

>
>Subject: Re: [SPAM] RE: [WM]: Purpose of using lena image!!!
>   From: "Edward J. Delp" <ace@ecn.purdue.edu>
>   Date: Mon, 10 Apr 2006 01:53:20 -0400
>     To: <watermarking@watermarkingworld.org>
>     Cc: watermarking@watermarkingworld.org
>
>> How about the F-16, Camera man, Baboon, Pepper and Boat? Are they as
>> bad as Lena?
>
>Yes some of these also started "life" as half-tone images.
>
>I do not understand why people want to use these images for data
hiding when you can see the half-tone screen in the lower order
>bits.
>
>Also do you know who owns these images?
>
>I find it amazing that people say that "watermarking can be used for
content protection" and then use images that have unknown
>ownership.
>
>They are much better data sets available.
>--
>
>========================3
>D====================================
>Professor Edward J. Delp
>Purdue University
>School of Electrical and Computer Engineering
>465 Northwestern Avenue
>West Lafayette, IN 47907-2035
>USA	
>
>Email: ace@ecn.purdue.edu
>
>Telephone: +1 765 494 1740
>Fax: +1 765 494 0880
>
>URL: http://www.ece.purdue.edu/~ace
>
>Map Location:
>Latitude: N 40 25.767
>Longitude: W 86 54.744
>Datum: WGS72
>
>"Badges? We ain't got no badges. We don't need no badges.
>I don't have to show you any stinking badges!"
>
>"Go tell the Spartans,
>Passerby,
>That here, obedient to their laws,
>We lie."


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