APG-L ArchivesArchiver > APG > 2008-01 > 1200096899
From: "Ann L. Wells" <>
Subject: Re: [APG] Interesting new technology
Date: Fri, 11 Jan 2008 16:14:59 -0800 (PST)
Suzanne Johnston <> wrote: Dr. Cai will be speaking tomorrow morning at 10 am at our (the Western
Pennsylvania Genealogical Society) monthly meeting at Carnegie Library
You can see some of the results of his scanning techniques at the
Suzanne M. Johnston, Editor
> After finishing up indexing 1500 tombstone images last night, this article grabbed my attention this morning. Dr. Cai's web page is at: http://www.andrew.cmu.edu/user/ycai/index.html for anyone technically inclined. I didn't find any papers on his web site on imaging tombstones but he has published articles on a number of novel imaging applications including diagnosing illnesses from images of your tongue to finding land mines using a video camera mounted on your head. The common thread is a lot of high powered math coupled with a computer.
> My read on this technology is that it is possible to automate the use of umbrellas, the hand-over-one-eye, cornstarch, colored acetate sheet, and a dozen other tricks folks use when they head out to the graveyard. Cool!
> -------------- Original message --------------
>> Scientist Uses High Tech to Recover Low-Tech Data
>> from the Pittsburgh Post-Gazette
>> Dr. Yang Cai spent many Sundays last fall walking through the cemetery of Old
>> St. Luke's Church in Scott. He would pass the remains of William Lea, a French
>> and Indian War veteran who donated the land for the burial ground, and Capt.
>> David Steel, a Revolutionary War veteran who belonged to one of Pittsburgh's
>> founding families.
>> But Dr. Cai wasn't there to honor distant kin or dignitaries. Instead, the
>> Carnegie Mellon University senior computer scientist was there to shed light,
>> literally, on those and other longtime occupants of the cemetery.
>> Using a small scanner and a digital camera, he worked to retrieve tombstone
>> information erased by 243 years of harsh weather, acid rain and pollution, the
>> scourge of sandstone memorials. The computer scientist's high
>> resolution, three-dimensional scans of the grave markers have retrieved names,
>> ages, dates, epitaphs and other valuable information ...
>> To read more: http://www.post-gazette.com/pg/08011/848345-115.stm
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Ann L. Wells
Wells Research Associates
Crystal Lake, IL
Member of APG,
International Society for British Genealogy
and Family History
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