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%%%file2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%ncc算法%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function res=match(a1,cnt1,r1,c1,a2,cnt2,r2,c2)
% res=match(a1,a2)
% 将从a1寻找a2中的最佳匹配点,得到从a2中抽取的res,也就是单向搜索
% [result1,cnt1,r11,c11]=harris(a1);
% [result2,cnt2,r22,c22]=harris(a2);%可以保证想匹配哪些点就匹配哪些
% figure;
% imshow(result1);title('result1角点位置');
% figure;title('result2角点位置');
% imshow(result2);
% win=[1/9 1/9 1/9;1/9 1/9 1/9;1/9 1/9 1/9];
% u1=filter2(win,a1);
% u2=filter2(win,a2); %求均值
%
%
%
a1=double(a1);
a2=double(a2);
% A=filter2(win,(a1-u1).^2);%求方差
% B=filter2(win,(a2-u2).^2);
[m1,n1]=size(a1);
[m2,n2]=size(a2);
res1=zeros(m1,n1);
res2=zeros(m2,n2); %寻找的匹配的点
for s=1:cnt1
max=0; p=0;q=0;i=r1(s,1);j=c1(s,1); %p.q存放坐标
for v=1:cnt2
m=r2(v,1);n=c2(v,1);
u1(i,j)=(a1(i-1,j-1)+a1(i-1,j)+a1(i-1,j+1)+a1(i,j-1)+a1(i,j)+a1(i,j+1)+a1(i+1,j-1)+a1(i+1,j)+a1(i+1,j+1))/9;%%求均值
u2(m,n)=(a2(m-1,n-1)+a2(m-1,n)+a2(m-1,n+1)+a2(m,n-1)+a2(m,n)+a2(m,n+1)+a2(m+1,n-1)+a2(m+1,n)+a2(m+1,n+1))/9;
x1=(a1(i-1,j-1)-u1(i,j));y1=(a2(m-1,n-1)-u2(m,n));
x2=(a1(i-1,j)-u1(i,j));y2=(a2(m-1,n)-u2(m,n));
x3=(a1(i-1,j+1)-u1(i,j));y3=(a2(m-1,n+1)-u2(m,n));
x4=(a1(i,j-1)-u1(i,j));y4=(a2(m,n-1)-u2(m,n));
x5=(a1(i,j)-u1(i,j));y5=(a2(m,n)-u2(m,n));
x6=(a1(i,j+1)-u1(i,j));y6=(a2(m,n+1)-u2(m,n));
x7=(a1(i+1,j-1)-u1(i,j));y7=(a2(m+1,n-1)-u2(m,n));
x8=(a1(i+1,j)-u1(i,j));y8=(a2(m+1,n)-u2(m,n));
x9=(a1(i+1,j+1)-u1(i,j));y9=(a2(m+1,n+1)-u2(m,n));
num1=x1^2+x2^2+x3^2+x4^2+x5^2+x6^2+x7^2+x8^2+x9^2;
num2=y1^2+y2^2+y3^2+y4^2+y5^2+y6^2+y7^2+y8^2+y9^2;
k1=x1*y1; %用result是找不到什么信息,3*3对于如此稀疏点没有用
k2=x2*y2;
k3=x3*y3; %用循环要好一些
k4=x4*y4;
k5=x5*y5;
k6=x6*y6;
k7=x7*y7;
k8=x8*y8;
k9=x9*y9;
num=k1+k2+k3+k4+k5+k6+k7+k8+k9;
den=sqrt(num1*num2);
ncc=num/den;
if ncc>max
max=ncc;
p=m;
q=n;
end
end
res2(p,q)=1;
end
%做不出来可以先搜索一个点
res=res2;
return |