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Article #541

Blobs....

#541
From: Matthew R. Singer
Date: Thu, 20 Aug 1992 14:56
25 lines
1508 bytes
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Can anyone suggest better ways....

I have an application what is looking at a 64x64 pixel image of space objects
(starts, satellites, junk...etc)...  I need to be able to associate pixels
that are above a given threshold into a probable object so that I can point
a telescope at them.  Currently, the method is to just take pixels that have
no "off" pixels between them and call them an object.  Several alternatives
are:

Scanning the image with a quad-cell centroid seeing when thing come above
a given power and error level.

Looking at local maxima...

Any other reasonable alternatives that can be done with a small amount of
compute?


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Matthew R. Singer                                    MIT Lincoln Laboratory
(617) 981-3771                                       244 Wood Street
singer@ll.mit.edu                                    Lexington, MA 02173
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From: singer@ll.mit.edu (Matthew R. Singer)
Subject: Blobs....
Message-ID: <1992Aug20.145656.4761@ll.mit.edu>
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Sender: singer@ll.mit.edu (Matthew R. Singer)
Reply-To: singer@ll.mit.edu (Matthew R. Singer)
Organization: MIT Lincoln Laboratory
Date: Thu, 20 Aug 92 14:56:56 GMT