function?seg_result=segmentation（original_image）

I=original_image;
M=max（I（:））;
I=round（I.*255/M）;
N=256;

for?i=1:N
????for?j=1:N
????????if（I（ij）<=30）?%灰度小于30的點統一認為是背景
???????????I（ij）=0;
????????end
????end
end
I_ad=imadjust（I/255[0.1?0.5][0?1]1）;%增強對比度
I_ad=I_ad*255;

%figureimshow（I_ad[]）

colum=60;
[countindex]=imhist（I_ad/255colum）;
tolBrain=size（find（I_ad））;
brainTol=tolBrain（1）;
thredcount=0;
brainRate=0.5;
i=2;
while?（i?????????thredcount=thredcount+count（i）;
?????????thred_h=index（i）;
?????????i=i+1;
end
i=2;
while?i?????????if?count（i）~=0;?????????
?????????thred_l=index（i+1）;??
?????????break;
?????????end
??????i=i+1;
end

I_ro=roicolor（I_adthred_l*255th

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3072??2009-05-08?12:43??MRI_image_segmentation\segmentation.m

?????文件??????33141??2009-04-19?00:22??MRI_image_segmentation\s_case1.mat

?????文件????????209??2009-05-08?12:26??MRI_image_segmentation\test_segmentation_2.m

?????文件????7412229??2009-04-19?00:22??MRI_image_segmentation\v_case1.mat

?????目錄??????????0??2010-12-11?20:16??MRI_image_segmentation

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

??????????????7448651????????????????????5