Re: [WM]: Need some image sets for testing

[electrical engineers <magy_f2006@yahoo.com>]

Dear Mr. Jeffrey A Bloom, 

Many thanks for your replying, it gave me full descibtion about the things I am supposed to talke about , it was a helpful answer.

Best wishes

Amaany

> [... stuff cut ...]
>    
> > I 'd like to ask you a question, when you bring some image database 
> > the unique question always is " talk about this database of images", 
> > what do you think they want me to tell them?
> 
> [... stuff cut ...]   
>  
> When a database of images is used as test source material for a 
> research project, it is important to know how many images are in the 
> database, their resolution, color representation, and color depth, how 
> they were digitized (digital photos or scanned), what processing has 
> been done, are they compressed (if so, how).  There are probably a 
> host of other important issues.  Someone should put together a FAQ.
> 
> The goal of using a large number of images rather than a single image 
> is to predict how an approach would work in "the real world" with real 
> images.  It is important to understand to what extent the database of 
> test images represents the distribution of real images.  This is 
> context and application dependent.  For example, the images in the 
> database you've pointed out wouldn't be appropriate for a watermarking 
> technique targeting x-ray imagery or ultrasound imagery or animation, 
> etc.  The images are all compressed, so it might not be representative 
> for an application that adds authentication marks during the 
> acquisition process.  By fully describing the images in the database, 
> researchers can select the appropriate database for their context.
> 
> - Jeffrey
> 
>
-----------------------------------------------------
> Jeffrey A Bloom, Content Security Research Group
> Thomson Corporate Research, Princeton, NJ, USA
> (609) 987-7727, (609) 987-7299 fax
> 
> 
> 
> 

--- electrical engineers <magy_f2006@yahoo.com> wrote:

> Dear Bao-zheng;
>    
>   See this link, I used it in my testing, it
> contains 1000 images.
>   http://www.cs.utah.edu/~sbasu/cbir.html
>    
>   I 'd like to ask you a question, when you bring
> some image database the unique question always is "
> talk about this database of
> images", what do you think they want me to tell
> them?
>    
>   bast wishes
>    
>   Amaany 
> 
> Bao-zheng <baozheng@gmail.com> wrote: 
>   Dear watermarkers,
> 
> i've got some results from the standrad image Lena,
> but i need more images to verify my results, can
> anyone tell me how to find the
> images or provide some images for me ?
> 
> by the way, how many images i need to support my
> conclusion?
> thank u in advance!
> 
> regards,
> Baozheng


______________________________________________________________________________

Watermarking Mailing List - http://www.watermarkingworld.org/ml.html
To unsubscribe send email to "majordomo@watermarkingworld.org" with
"unsubscribe watermarking YOURMAIL" in the body.
______________________________________________________________________________