Thread View: sci.image.processing
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6 total messages
Started by "Imaging Club"
Tue, 18 Aug 1992 17:35
Art gallery image processing
Author: "Imaging Club"
Date: Tue, 18 Aug 1992 17:35
Date: Tue, 18 Aug 1992 17:35
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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
Author: Richard Ottolini
Date: Tue, 18 Aug 1992 21:43
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
Author: Jason Leigh
Date: Wed, 19 Aug 1992 01:51
Date: Wed, 19 Aug 1992 01:51
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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
Author: Juhana Kouhia
Date: Wed, 19 Aug 1992 11:50
Date: Wed, 19 Aug 1992 11:50
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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
Author: william E Davidsen
Date: Wed, 19 Aug 1992 20:02
Date: Wed, 19 Aug 1992 20:02
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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
Author: agnew
Date: Fri, 21 Aug 1992 12:19
Date: Fri, 21 Aug 1992 12:19
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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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