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From: Ilan Alpert on 25 Feb 2010 00:01
I have a matrix that in gray scale goes from 0 to 255 to represent an equation. The image is found here: http://drop.io/sqr5ooo
What I need to do is instead of making it a full range from 0 to 255 like in the image, I need to make all values between 0 and 63 63, 64 to 127 to 127, 128 to 191 to 191 and 192 to 255 to 255. This will create 4 distinct circles instead of a 0 to 255 gradient.
Thanks for the help.
Ilan
From: Bruno Luong on 25 Feb 2010 03:07
"Ilan Alpert" <cooldaddysa(a)yahoo.com> wrote in message <hm507d$6gj$1(a)fred.mathworks.com>...
> I have a matrix that in gray scale goes from 0 to 255 to represent an equation. The image is found here: http://drop.io/sqr5ooo
> What I need to do is instead of making it a full range from 0 to 255 like in the image, I need to make all values between 0 and 63 63, 64 to 127 to 127, 128 to 191 to 191 and 192 to 255 to 255. This will create 4 distinct circles instead of a 0 to 255 gradient.
> Thanks for the help.
> Ilan

[trash img]=histc(img,[0 64 128 256]);

Bruno
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