How to find the displacement in the vertical and horizontal directions( delta x and delta y) and find the angular displacement(ɸ) for image correlation.

As we have found the correlation between two images. And also found the maximum point of correlation..

But dont know how to find the displacement in the vertical and horizontal directions( delta x and delta y)

And find the angular displacement(ɸ)? If any knows, please let me know. Thanks in advance.

The program is as per below...

Img1 = imread('C:\Users\DELL\Desktop\Natures\Nature1.jpg');

Img2 = imread('C:\Users\DELL\Desktop\Natures\Nature2.jpg');

N = 500; range = 1:N;

da = [0 20];

db = [30 30];

dc = [0 20];

dd = [30 30];

A=Img1(da(1) + range, da(2) + range);

B=Img1(db(1) + range, db(2) + range);

C=Img2(dc(1) + range, dc(2) + range);

D=Img2(dd(1) + range, dd(2) + range);

X = normxcorr2(A, B);

m = max(X(:));

[i,j] = find(X == m);

Y = normxcorr2(C, D);

m = max(Y(:));

[k,l] = find(Y == m);

R = zeros(2*N, 2*N);

R(N + range, N + range) = B;

R(i + range, j + range) = A;

R(N + range, N + range) = D;

R(k + range, l + range) = C;

figure

subplot(2,2,1), imagesc(A)

subplot(2,2,2), imagesc(B)

subplot(2,2,3), imagesc(X)

rectangle('Position', [j-1 i-1 2 2]), line([N j], [N i])

subplot(2,2,4), imagesc(R);

subplot(2,2,1), imagesc(C)

subplot(2,2,2), imagesc(D)

subplot(2,2,3), imagesc(Y)

rectangle('Position', [l-1 k-1 2 2]), line([N l], [N k])

subplot(2,2,4), imagesc(S);

delta_orig1 = da - db

%--> [30 10]

delta_recovered = [i - N, j - N]

%--> [30 10]

delta_orig2 = dc - dd

%--> [30 10]

delta_recovered = [k - N, l - N]

%--> [30 10]

Output:

[Marcel Kreuzberg]

Hi,

check maltab funktion imregcorr available in image processing toolbox

regards