function?colorhist?=?colorhist（rgb）
%?CBIR_colorhist（）?---?color?histogram?calculation
%?input:???MxNx3?image?data?in?RGB
%?output:??1x256?colorhistogram?<==?（HxSxV?=?16x4x4）
%?as?the?MPEG-7?generic?color?histogram?descriptor
%?[Ref]?Manjunath?B.S.;?Ohm?J.-R.;?Vasudevan?V.V.;?Yamada?A.?“Color?and?texture?descriptors“?
%?IEEE?Trans.?CSVT?Volume:?11?Issue:?6??Page（s）:?703?-715?June?2001?（section?III.B）

%?check?input
if?size（rgb3）~=3
????error（‘3?components?is?needed?for?histogram‘）;
end
%?globals
H_BITS?=?4;
S_BITS?=?2;
V_BITS?=?2;
%?convert?to?hsv為什么要用hsv
hsv?=?uint8（255*rgb2hsv（rgb））;

imgsize?=?size（hsv）;
%?get?rid?of?irrelevant?boundaries
i0=round（0.05*imgsize（1））;??i1=round（0.95*imgsize（1））;
j0=round（0.05*imgsize（2））;??j1=round（0.95*imgsize（2））;
hsv?=?h

?屬性????????????大小?????日期????時間???名稱
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?????文件?????????95??2011-12-21?10:25??colorhist\新建?文本文檔.txt

?????文件???????1303??2009-02-23?21:58??colorhist\colorhist.m

?????目錄??????????0??2011-12-21?10:58??colorhist

-----------?---------??----------?-----??----

?????????????????1398????????????????????3