www.pudn.com > car.rar > select.m

function [y,y1]=select(ImageData,h,w) 
 
thr=0.5;delta=0.05; 
% 
y=(ImageData>=thr*mean(max(ImageData))); 
BW2=bwareaopen(y,10);SE=strel('square',15); 
IM2=imdilate(BW2,SE); 
IM3=imerode(IM2,SE); 
% 
average=sum(sum(IM3))/(h*w); 
while(average<0.03||average>0.06) 
    if(average<=0.005||average>=1) 
        break; 
    end 
    if(average<0.03) 
        thr=thr-delta; 
    else 
        thr=thr+delta; 
    end 
    y=(ImageData>=thr*mean(max(ImageData))); 
    BW2=bwareaopen(y,10); 
    IM2=imdilate(BW2,SE); 
    IM3=imerode(IM2,SE); 
    average=sum(sum(IM3))/(h*w); 
end 
y1=y; 
y=IM3;