[fprint] New image formats?

[Geppy Parziale]

Just a note.
The WSQ format can be used only for fingerprint image @500 ppi. If the  
fp image is 1000ppi or more, the wsq is not usefull anymore and  
jpeg2000 is the correct format. This is also specified in the ANSI/ 
NIST standard.

Geppy


On 06 Feb, 2008, at 14:13, Davidlohr Bueso wrote:

>
>> Who uses WSQ other than NIST? What is it's advantage? (My WSQ  
>> knowledge
>> is only the bare minimum needed to work with NBIS)
>
> WSQ nowadays is industry standard. Not only because of it's excellent
> compression, but it is also ideal for fingerprint images.
>
> From Wikipedia http://en.wikipedia.org/wiki/ 
> Wavelet_Scalar_Quantization
>
> "This compression method is preferred over standard compression
> algorithms like JPEG because at the same compression ratios WSQ  
> doesn't
> present the "blocking artifacts" and loss of fine-scale features that
> are not acceptable for identification in financial environments and
> criminal justice."