CLPEX Chat Board

Hi i have just found this site today and was hoping that someone out there can help me. I am currently writing up my final year research project for university. The title of the research project is "pressure distortion and the affects this can have on an AFIS match" I am having problems finding any previous research into this all I can come up with is research using the live scan system. But my research concentrates on latent prints gained from various surfaces such as plastic and metals. I am also searching for any criminal cases that may have been affected by this.

yours hopefully

kris33

Hi kris33.

Where are you located and what University?

I have a student thesis (an excellent project) by Susie Richmond from Australian Federal Police and the university in Canberra Austr. titled:
"Do fingerprint ridges and characteristics within ridges change with pressure? "

It is some excellent work...there is another similar thesis from there re: distortion effects. The problem is they are both in the 50-60MB size b/c of the images contained within.

Fantastic research and I would love (if either author checks this board) to get in contact with them. I see Les Bush, Bruce Comber, and Chris Lennard have all been acknowledged in Foreward, so perhaps these individuals might know more about getting a hold of the authors.

So if you could provide perhaps more info about the nature and extent of your research and some more background, we may be able to help you get these works...

(PS-to fingerprint folks, my intention is to add these works to future editions of the Holy Grail....some very good research here on distortion effects).

g.

Hi G thanks for your reply. I am in the Uk and studying at staffordshire university.

My project is for my final year disertation for Bsc hons forensic science. I chose the title and nature of the research project because I wanted to find out to what extent pressure distortion has an affect in the analysis of latent fingerprints. The method I used was to find surfaces that are in and around houses concentrating on what might be found in areas of entry and exit that a criminal may touch. These were PVC window sills, wall tiles, plastic and brass. lifting techniques were aluminium powder and superglue fuming (enhanced with powder). the pressure applied was consistant with someone for example climbing in through a window of a house. Analysis was then done with the AFIS database that we have at the university. Out of hundreds of latents prints analysed I only managed to gain results from 11 prints. I also did control prints for each method and each volunteer used.

I would be very grateful for any help as I have never done anything like this before and feel pretty daunted by the whole thing

Hi

I'm in the 3rd Year at Wolves... Are you going to come to the FIRN student conference at the end of March?

If you are sending in your abstract I would be interested to see it.

Thanks
Emma

Kris 33

I have two cases with images where latents were entered into AFIS that resulted in a non-match. Other latent prints in the case were identified with a suspect and the latent prints were then identified.

Both latent prints are the result of a type of pressure that I call "Compression". In one of the cases we tried to go in and force a hit and it still did not bring up the correct respondent.

Send me an e-mail and I will forward the two images and more information on the cases.

Firstly thank you for sending me the information Charles.

To emma I wasn't aware of the FIRN student conference. I have missed one lecture this year and possibly that was the lecture we got told about it!!!! would you be able to give me some more details about it please so I can see if I can get there it sounds like it will be useful.

thanks kris

Kris

Email me at Emma.Clemson@wlv.ac.uk and I will forward you all the information that you need to attend.

It's at the University of Wolverhampton on Friday 30th March 2007 and has talks from Mr Derek Forest (Disaster Victim Identification) and Prof Alan Jamieson (Head of the Forensic Institute) both excellent speakers.

There's also the FORREST Conference at Staffs Uni in September. Which I am hoping to be at.

Email me and I'll pass everything on.

Emma

Kris

Email me at Emma.Clemson@wlv.ac.uk and I will forward you all the information that you need to attend.

It's at the University of Wolverhampton on Friday 30th March 2007 and has talks from Mr Derek Forest (Disaster Victim Identification) and Prof Alan Jamieson (Head of the Forensic Institute) both excellent speakers.

There's also the FORREST Conference at Staffs Uni in September. Which I am hoping to be at.

Email me and I'll pass everything on.

Emma

Hi Kriss and G.

Susie Richmond and Lissa Dinning did the two projects as part of a required training program within our organisation. It was done in conjunction with the Canberra Institute of Technology with input from some of our members.

I am seeking advice regarding ownership of the projects and any permissions or acknowledgements that would need to be made, (and checking with Lissa and Susie), before making the projects available to you. It is our intention that the material be made available - not much use if you hide it away!

I had input into these and am intending ASAP, to provide a paper on Lissa's project to the IAI for consideration of publication.

Please contact me at bruce.comber@afp.gov.au if you wish.

Regards,

Bruce Comber

Bruce,

I would strongly encourage you to get the authors to publish these. Having had the opportunity to read them, it's top notch research with great quantitative and qualitative conclusions...great visual demonstrations of distortion and in my opinon, should be made part of every training programme. I am certain the IAI would be interested and perhaps you should speak to Alan McRoberts with JFI to publish as a supplementary or something....

I look forward to hopefully meeting you in a few weeks at IFRG. Also if you would kindly forward my email to the authors of these 2 articles, I would like to talk to them myself at some point and get more info about distributing the docs.

My email is glenn.langenburg@state.mn.us

Thank-you and hopefully I will meet you soon!

g.