function?icdf?=?imgcdf（img）
%?Author:?Javier?Montoya?（jmontoyaz@gmail.com）.
%?????????http://www.lis.ic.unicamp.br/~jmontoya
%
%?IMGCDF?calculates?the?Cumulative?Distribution?Function?of?image?I.
%?Input?parameters:
%????img:?image?I?（passed?as?a?bidimensional?matrix）.
%?Ouput?parameters:
%????icdf:?cumulative?distribution?function.
%
%?See?also:?IMGHIST
%
%?Usage:
%????I????=?imread（‘tire.tif‘）;
%????icdf?=?imgcdf（I）;
%????figure;?stem（icdf）;?title（‘Cumulative?Distribution?Function?（CDF）‘）;

???if?exist（‘img‘?‘var‘）?==?0
??????error（‘Error:?Specify?an?input?image.‘）;
???end
???
???icdf????=?[];
???ihist???=?imghist（img）;
???maxgval?=?255;
???icdf????=?zeros（1maxgval）;
???
???icdf（1）=?ihist（1）;
???for?i=2:1:maxgval+1
??????icdf（i）?=?ihist（i）?+?icdf（i-1）;
???e

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????809??2007-04-01?23:34??imgcdf.m
?????文件?????????848??2007-04-01?23:34??imgeqmapping.m
?????文件?????????705??2007-04-01?23:34??imghist.m
?????文件?????????706??2007-04-01?23:34??imghisteq.m
?????文件?????????686??2007-04-01?23:34??imgnormcdf.m
?????文件?????????681??2007-04-01?23:34??imgpdf.m