Enlightening and entertaining - Thanks Charles :)



----------------Contact
Details:-------------------------------------------------------
Contact me: Tal.Galili@gmail.com |  972-52-7275845
Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
www.r-statistics.com (English)
----------------------------------------------------------------------------------------------




On Sun, Apr 4, 2010 at 8:14 PM, Charles C. Berry <cberry@tajo.ucsd.edu>wrote:

> On Sun, 4 Apr 2010, Tal Galili wrote:
>
>  Hi Jim,
>> Another thing I am wondering is - even if you have a metric for comparing
>> two images (which I admit I didn't come across and I don't know how to
>> approach), would that be enough to decide if two images are "close" or
>> not?
>> My guess is that no - one would also need a database of other
>> fingerprints,
>> to compare how much a particular image is closer to another image,
>> compared
>> to how other images are close to that image.
>>
>
> Well, I am not Jim, but there is a literature on fingerprint ID starting
> before 1892 when Galton's "Finger Prints" was published (see below).
>
>
> And yes, you need a database.
>
>         "The main challenge in studies of fingerprint individuality is
>          to adequately capture the variability of fingerprint features
>          in a population. "
>
> from:
>
> Sarat C. Dass and Mingfei Li, Hierarchical mixture models for assessing
> fingerprint individuality. Ann. Appl. Stat. Volume 3, Number 4 (2009),
> 1448-1466.
>
> ===
>
> See
>
>        http://galton.org/fingerprinter.html
>
> for a summary of Francis Galton's work and a links to classic works like
> his 1892 opus:
>
> "Let no one despise the ridges on account of their smallness, for they are
> in some respects the most important of all anthropological data. " Galton
> 1892.
>
> It is amusing to me to ponder how Galton might have revised that statement
> in view of modern DNA sequencing technology. 'Let no one despise the
> nucleotide bases on account of their smallness, ...'
>
>
> HTH,
>
> Chuck
>
>
>
>>
>>
>> Tal
>>
>>
>> ----------------Contact
>> Details:-------------------------------------------------------
>> Contact me: Tal.Galili@gmail.com |  972-52-7275845
>> Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) |
>> www.r-statistics.com (English)
>>
>> ----------------------------------------------------------------------------------------------
>>
>>
>>
>>
>> On Sun, Apr 4, 2010 at 1:55 AM, Jim Lemon <jim@bitwrit.com.au> wrote:
>>
>>  On 04/04/2010 05:18 AM, Juan Antonio Gil Pascual wrote:
>>>
>>>  Hi Bernado
>>>>
>>>> I need to compare two fingerprint images and let me know if you can do
>>>> with R. I have used the technique of minutiae but it seems to work
>>>> better with the cross-correlation and wanted to know if you can do with
>>>> R.
>>>>
>>>>  Hi Juan,
>>>>
>>> If you're using minutiae, you will want something like character
>>> recognition to identify the (admittedly arbitrary) elements of
>>> fingerprints
>>> like loops and whorls and their relative extents and positions. I don't
>>> know
>>> whether there is much character recognition stuff done in R, but it would
>>> certainly be related.
>>>
>>> Jim
>>>
>>>
>>> ______________________________________________
>>> R-help@r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>>> http://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>>
>>        [[alternative HTML version deleted]]
>>
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
> Charles C. Berry                            (858) 534-2098
>                                            Dept of Family/Preventive
> Medicine
> E mailto:cberry@tajo.ucsd.edu               UC San Diego
> http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901
>
>
>

	[[alternative HTML version deleted]]

