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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Counting occurences of data in large image matrix
Replies: 1   Last Post: Oct 30, 1997 9:51 AM

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David Arnold

Posts: 126
Registered: 12/4/04
Counting occurences of data in large image matrix
Posted: Oct 18, 1997 9:13 PM
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I do not have the image processing toolbox. I have a 256 by 256
grayscale image in uint8 format (each entry in the matrix is an integer
betwee 0 and 255 inclusive).

I have tried ghist, but it takes inordinately long on my 486 machine.

I would like a fast routine to count the occurrence of each 0 in my
matrix, each 1 in my matrix, each 2 in my matrix,..., each 255 in my
matrix.

Any suggestions?
--
David Arnold
College of the Redwoods
Eureka, California 95501

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