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From: cmpbsdb@pyr.gatech.EDU (Don Barry)
Newsgroups: comp.sys.next
Subject: Video frame-grabbing card needed for Next/Nubus
Message-ID: <6614@pyr.gatech.EDU>
Date: 20 Oct 88 02:54:09 GMT
Organization: Georgia Institute of Technology
Lines: 30

HELP!

We are very shortly to specify a computer system to be used to perform
real-time video manipulation in the processing of double-star images 
taken directly from a telescope detector.  The capabilities of the NeXT
built-in DSP processor appear absolutely perfect for the task, without 
having to resort to custom hardware.  

Is video hardware available for NuBUS that would enable us to capture 
30 frames/sec at a resolution of 256x256 or 512x512?  Capturing the video
zoomed (i.e., 256x256 of a standard NTSC signal) would be a plus.  There
is a product called PC-VISION available for both VMEbus and an AT-style bus,
but last I checkd, they don't make a NUBUS product.  

I would appreciate any prompt replies.  As our decision must be made in
the next week or so in order to disburse funds, I'm anxious to find out what
I can now.  

P.S.  The video processing mentioned above consists of slight variations on 
standard vector-autocorrelation techniques.  I.E. pixels passing a threshold
are found, and then each of these pixels correlated with all the other bright
pixels in a map.    Comments?
   
   Don Barry
   GSU Center for High Resolution Astronomy

-- 
Don Barry                   Phone: (404)237-5055   
2867 Ashford Rd.           BITNET: CMPBSDB @ GITVM1
Atlanta, GA 30319        Internet: cmpbsdb@pyr.gatech.edu
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