VISION-LIST Digest 1988 11 11

Published in

· 10 months ago

Vision-List Digest	Fri Nov 11 14:13:22 PDT 88 

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Today's Topics: 

 Vision systems question/advice 
 Translator 

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Date: 11 Nov 88 03:36:37 GMT 
From: rr21@isl1.ri.cmu.edu (Rajan Ramaswamy) 
Subject: Vision systems question/advice 
Keywords: vision system, steel plants, sensing 
Organization: Carnegie-Mellon University, CS/RI 

 
     APPLYING COMPUTER-VISION TO STEEL PLANT PROCESS CONTROL 

We are investigating the feasibility of installing vision systems to 
replace existing sensing systems in steel plants. These are electric 
arc furnaces that produce couple of hundred tons of molten steel (3000 
F) every few hours and the people concerned want to move their sensors  
as far away as they possibly can. 

I would appreciate any views/advice/warnings/EXPERIENCE that anyone on 
the net has to offer.  Pointers to relevant references or equipment 
will also be welcome. 

The following is a summary of the application and problems we foresee, 

o We want to sense the position of large (10 ft), slow moving objects  
  (~ 1 ft/sec) with reasonable accuracy (~1 inch). These items are, the roof 
  of a furnace, the tilt angle of the furnace etc. 

o Light conditions are extremely variable. There is an order of magnitude 
  change (at least) when the furnace lid is opened. Lots of shadows etc. 

o Lots of dust, vibration and sparks flying about are to be expected. 

o The temperatures may be rather high (100+ F). This requires that cameras 
  be decently far off. 

o Processing should be completed in less than 5 seconds. 

Thanks a lot, 

Rajan 

p.s.: If you need further details to answer anything PLEASE contact me. 

--  
"Until the philosophy of one race superior, and another, inferior, 
 is finally and permanently discredited and abandoned, it's WAR. 
                                   Haile Selassie,Emperor of Abyssinia, 
		                   O.A.U. Conference  197? 

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Date: Thu, 10 Nov 88 14:36:46 GMT 
From: Guanghua Zhang <mcvax!cs.hw.ac.uk!guanghua@uunet.UU.NET> 
Subject: Translator 

For the moment, I am working on a knowledge-based vision system 
which includes a commercial Solid Modelling package. The Solid Modeller 
represents curve surface as a set of facets which can be displayed on the 
screen or printed. What I am trying to do is to write a translator to 
transform the output data into the real from, e.g. cyclinder.  
Could anybody give me some pointers about the existing work or any  
publications ? 

Thanks in advance. 

guanghua 

[  I believe the work on Acronym and Successor by Binford and his students 
   at Stanford has addressed this?   
		phil...		] 

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