Re: Using GIFT for symbol recognition

Hi,

indeed, I have experimented a little bit with using gift for trademark 
retrieval, which should be similar to handdrawn symbols. There is a lot 
of literature on it particularly from John Eakins.
 From my work at the time not too much remains.

If you have a set of images you can try out gift and index a directory 
structure containing your images. The gabor filters should at least give 
you some reasonable results when the input images are more or less black 
on white.

There are also several projects on 3D features for retrieval.

Cheers, Henning

David Squire wrote:
> Philip Farrugia wrote:
>> Dear All,
>>
>> Kindly note that I've just subscribed with the GIFT mailing list. I'm 
>> involved in a Ph.D. research project aimed at automatically generating 
>> 3D virtual models directly from /paper/-absed sketches. I'm planning 
>> to use GIFT as means to recognise /different symbols/ that I'm using 
>> in the sketches.
>>
>> Can you please tell me whether it is possible to recognise hand-drawn 
>> symbols using GIFT? If yes, how to create my own database of symbols 
>> in GIFT?
> Hi Philip,
> 
> The GIFT does not have specific support for symbols, or indeed line
> drawings of any kind. The default set of features used by the gift
> (areas of colour and texture) are more likely better suited to
> photographs of natural scenes.
> 
> That being said, IIRC, there has been an application of the GIFT to
> trademark recognition (Henning might be able to give a pointer for
> that). There has certainly been considerable research on the use of CBIR
> for trademark retrieval.
> 
> I suspect that you should consider creating a feature set that is
> specific to your image domain. It is possible that this could then be
> used with the GIFT architecture for retrieval.
> 
> Still, I guess first you should try it and see. To create a "database of
> symbols", all you need is a directory full of images.
> 
> Regards,
> 
> David
> 
> 

-- 
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  Henning Müller (PhD)
  University & Hospitals of Geneva
  Service of Medical Informatics
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