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Thread View: sci.image.processing
6 messages
6 total messages Started by "Imaging Club" Tue, 18 Aug 1992 17:35
Art gallery image processing
#424
Author: "Imaging Club"
Date: Tue, 18 Aug 1992 17:35
41 lines
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There is a rather interesting article in the August 15th issue of
the Economist, describing what Washington's National Gallery of
Art and Munich's Pinakothek are doing regarding image processing
of paintings.  The National Gallery is building a computer system
covering 2,800 of its American works.  Whereas photographs fade
and wrinkle, the digital images are accurate, detailed and last
forever.  The digital images will be able to track how the colors
of the paintings change over time; yellows are especially bad.

The National Gallery is using their system to determine if the
pictures need cleaning.  They swab a small section of a dirty
painting, letting their computer work out differences between the
clean and the dirty parts, and then apply these differences to the
digital record of the painting as a whole, producing a computer-
generated image of what a picture would look like were the whole
thing to be given a scrub.

Another technique, borrowed from satellite imaging, is to exaggerate
the color contrasts within a painting's digital image.  Apply the
trick to Jan Gossaert's "Adoration of the Magi", for example, and a
pair of cherubs, long darkened to the same muddy brown as the beam
they are sitting on spring to view.

Computers will also change art galleries for visitors, too.  By
putting their paintings on computer, galleries can make them
easier to find, understand and appreciate.

The Doerner Institute, a research laboratory attached to Munich's
Pinakothek, is using a computer system similar to the National
Gallery's to measure accurately the damage done to pictures in
transit.  By comparing scans of a painting's "Craquelure"--
the network of hairline cracks that covers its surface--before and
after it is moved, the institute can see if the cracks have multiplied
or lengthed.  An early trial of a painting, taken on a 250-mile road
trip in a car, showed that even a properly packed picture gets lots of
new cracks when it is moved.  The institute plans to publish its
findings in October.

If anyone would like a full copy of this article, let me know.

--------------------Michael.Willett@OFFICE.Wang.com------------------
Re: Art gallery image processing
#430
Author: Richard Ottolini
Date: Tue, 18 Aug 1992 21:43
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This weeks Time Magazine (Aug 24) has an article about Kodak's image
processing camera.  Outputs 18 megapixels per image on to CD disk.
A new law in California created an immediate market for it.  Automobile insurers
are required this year to photograph vehicles in order to prevent fraud.
I assume when all the bells and whistles are worked out, some good Asian
electronics company will figure out how to get the technology cheaply into
amateur's hands.
Re: Art gallery image processing
#438
Author: Jason Leigh
Date: Wed, 19 Aug 1992 01:51
14 lines
1102 bytes
In article <1992Aug18.214345.25931@unocal.com> stgprao@xing.unocal.com (Richard Ottolini) writes:
>I assume when all the bells and whistles are worked out, some good Asian
>electronics company will figure out how to get the technology cheaply into
>amateur's hands.

And why would it be an Asian company who would do this?



-- 
---------------------------------------------------------  ___
| The opinions expressed above are necessarily those of | \\     \\  | \\
| the Electronic Visualization Laboratory, NAAAT!       |  \\---  \\ |  \\
| Send Replies to: spiff@bert.eecs.uic.edu (Jason Leigh)|   \\____ \\|   \\____
Re: Art gallery image processing
#505
Author: Juhana Kouhia
Date: Wed, 19 Aug 1992 11:50
22 lines
1304 bytes
In article <1992Aug19.015109.26290@bert.eecs.uic.edu>
spiff@bert.eecs.uic.edu (Jason Leigh) writes:
>In article <1992Aug18.214345.25931@unocal.com>
>stgprao@xing.unocal.com (Richard Ottolini) writes:
>>I assume when all the bells and whistles are worked out, some good Asian
>>electronics company will figure out how to get the technology cheaply into
>>amateur's hands.
>
>And why would it be an Asian company who would do this?

Ok, let it be a non-USA company then.
It could be a USA company if there's no fine mechanical parts in the
product -- maybe they could buy mechanical parts from an Asian
company. Hmmmm.

It is the fact that Japan is the leader in making this kind of
products for public.


Juhana Kouhia
:-)
Re: Art gallery image processing
#514
Author: william E Davidsen
Date: Wed, 19 Aug 1992 20:02
22 lines
1907 bytes
In article <1992Aug18.214345.25931@unocal.com>, stgprao@xing.unocal.com (Richard Ottolini) writes:
| This weeks Time Magazine (Aug 24) has an article about Kodak's image
| processing camera.  Outputs 18 megapixels per image on to CD disk.
| A new law in California created an immediate market for it.  Automobile insurers
| are required this year to photograph vehicles in order to prevent fraud.
| I assume when all the bells and whistles are worked out, some good Asian
| electronics company will figure out how to get the technology cheaply into
| amateur's hands.

  Hate to say it but (a) in NY all the insurer's I've ever heard of do
photos now, and they get their technology from Polaroid. (b) Canon has
the Xapshot camers for ~$500 now, I think we paid about $400 in a
discount store. The old ones have pretty bad resolution (is it really
512 lines???) but the current ones are better. I thought the 250 and 500
in the model number was the lines, honestly. Still, for 20-25 pix on a 2
inch disk, it's pretty nice, and the disk is reusable after you go to
other media. I read the image in, and unless I need to process it later
I JPEG it down to a reasonable size.

-- 
bill davidsen, GE Corp. R&D Center; Box 8; Schenectady NY 12345
    I admit that when I was in school I wrote COBOL. But I didn't compile.
Re: Art gallery image processing
#549
Author: agnew
Date: Fri, 21 Aug 1992 12:19
36 lines
2053 bytes
In article <1992Aug19.115044.1034@cc.tut.fi>, jk87377@cc.tut.fi (Juhana Kouhia) writes:
> 
> In article <1992Aug19.015109.26290@bert.eecs.uic.edu>
> spiff@bert.eecs.uic.edu (Jason Leigh) writes:
>>In article <1992Aug18.214345.25931@unocal.com>
>>stgprao@xing.unocal.com (Richard Ottolini) writes:
>>>I assume when all the bells and whistles are worked out, some good Asian
>>>electronics company will figure out how to get the technology cheaply into
>>>amateur's hands.
>>
>>And why would it be an Asian company who would do this?
> 
> Ok, let it be a non-USA company then.
> It could be a USA company if there's no fine mechanical parts in the
> product -- maybe they could buy mechanical parts from an Asian
> company. Hmmmm.
> 
> It is the fact that Japan is the leader in making this kind of
> products for public.
> 
> 
> Juhana Kouhia
> :-)

  And, who may I ask sold to the Soviets machining equipment that made their
submarines many orders of magnitude quieter, while the old Soviet government
was in operation???????  and just for mere money, too.  Quality needs to be
balanced off with responsibility.  It's widely said that Japanese save more
than Americans do, but the flip side is the companies do not provide any
retirement.

-- 
         /^^^\   \ /   Jim Agnew         AGNEW@RUBY.VCU.EDU  (Internet)
        /      >  ||   Neurosurgery,     AGNEW@VCUVAX        (Bitnet)
   /\_/     '   \  /   MCV-VCU           This tape will self destruct in
 /________________>    Richmond, Va      five seconds.  Good luck, Jim..."
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