| object searching in an image [message #4327] |
Mon, 22 May 1995 00:00 |
woellik
Messages: 1
Registered: May 1995
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Junior Member |
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Hi there,
I am looking for a method for doing object finding in a
gray scaled picture. The search-object is well known
(size, shape and brightness), but in the given image,
it can differ from it. This is because of little shaddow
effects, noise or dirty parts on the object, or even
hidden and joined parts.
My solution now (and it has a very good functionality)
is to operate with a lot of histograms, continued with
similar edge detecting. The disadvantage is the
computed time: One object with, say 20*20 pixel in a
300*200 image needs more than 2 minutes to find!
My question now: Is there any good and FAST algorithm
for doing this job? (I heard from the Normalized-
Correlation-Search-Technique, but I do not know more
about it...)
I also wonder about any books/papers with this topic.
Thanks.
--
Woellik Helmut woellik@mhi.tu-graz.ac.at
Institut fuer Foerdertechnik TU-GRAZ
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