| Author |
Message |
lucy
Guest
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 Posted:
Wed Dec 22, 2004 12:50 am Post subject:
how to compare the two image objects with different size? |
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Hi all,
I want to compare two image objects... they look very similar to human
visual system... but I want to find their similarities by metrics...
The two image objects are embedded in two different large images... I mean,
they are surrounded by dark or near-dark background in two larger images...
And these two larger images are of different sizes and different sampling
rate... And the two image objects aren't the same relative locations within
the larger images...
So how do I dig them out from their background and how do I compensate for
different sampling rate in comparison?
Thanksa lot |
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Ken Prager
Guest
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| Posted:
Wed Dec 22, 2004 4:14 am Post subject:
Re: how to compare the two image objects with different size |
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In article <cq9uqc$2kr$1@news.Stanford.EDU>,
"lucy" <losemind@yahoo.com> wrote:
| Quote: | Hi all,
I want to compare two image objects... they look very similar to human
visual system... but I want to find their similarities by metrics...
The two image objects are embedded in two different large images... I mean,
they are surrounded by dark or near-dark background in two larger images...
And these two larger images are of different sizes and different sampling
rate... And the two image objects aren't the same relative locations within
the larger images...
So how do I dig them out from their background and how do I compensate for
different sampling rate in comparison?
Thanksa lot
|
google: image warping
google: pattern recognition
--
Remove _me_ for e-mail address |
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Isaac Gerg
Guest
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| Posted:
Wed Dec 22, 2004 10:33 pm Post subject:
Re: how to compare the two image objects with different size |
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Use the brightness feature, as you mentioned, to separate the object
from the background. Then, scale teh object to some normlized shape and
then compare.
Also, this may be of use.. I have found it helpful.
http://www.ece.utexas.edu/~bevans/courses/ee381k/projects/fall00/rajagopal/litSurveyReport.pdf
Isaac
lucy wrote:
| Quote: | Hi all,
I want to compare two image objects... they look very similar to human
visual system... but I want to find their similarities by metrics...
The two image objects are embedded in two different large images... I mean,
they are surrounded by dark or near-dark background in two larger images...
And these two larger images are of different sizes and different sampling
rate... And the two image objects aren't the same relative locations within
the larger images...
So how do I dig them out from their background and how do I compensate for
different sampling rate in comparison?
Thanksa lot
|
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