get_feature.m

基于BP网络的车牌定位程序

function feature_array=get_feature(I);
%
I=imresize(I,[30,15]);
feature_array=zeros(15,1);
[I_high,I_width]=size(I);
higblk_num=I_high/6;
widblk_num=I_width/5;
count=0;
count=higblk_num*widblk_num;

for i=1:5
    for j=1:3
        blackpoint_num=0;
        for m=(i-1)*higblk_num+1:i*higblk_num
            for n=(j-1)*widblk_num+1:j*widblk_num
                if(I(m,n)<0.5)
                    blackpoint_num=blackpoint_num+1;
                end
            end            
        end
        index=(i-1)*3+j;
        feature_array(index)=blackpoint_num/(count);
    end
end