Open

A java applet should appear on your screen.

Click on File, OpenImage and select Asterix.
Check Homography box.

By clicking on the images you can select points. The coordinates are displayed in text field.

(i) Select 10 or more pairs of corresponding points in two images.
Start with the first point on the left image, then select the corresponding one on the right image and so on.
You can use Edit and Clear all Tokens to restart the selection.

(ii) Click on Compute matrix and Check mode box.

(iii) Click and drag mouse pointer in one of the images.

(iv) Open Window and Set Matrix. Extract the significant transformation parameters from this matrix.

How point positions are computed in point (iii) given the homography matrix?
how these operations are done in real matching algorithm?

(v) Load image Lipton form File OpenImage. Change the mode to Epipolar and repeat the points (i)-(iii).