how can find matching point in two images?

hi all. I have two images from same scene. but they are different from each other.

and

...I want to crop a segment of one of these images and find the Corresponding point on the other image? like below:

I used the code in below link: http://www.ipol.im/pub/algo/my_affine_sift/ but I couldn't find the result that I wanted. can you please guide me?

Answer 1

[Image Analyst]

You can go here http://cecs.wright.edu/~agoshtas/home.html to Arthur Goshtasby's site. This professor at Wright State University in Ohio is the guy who literally wrote the book on the subject. Two books actually. It's a complicated subject, so good luck.

If you have the Computer Vision System Toolbox, you can use that:

http://www.mathworks.com/products/computer-vision/features.html#feature-detection%2C-extraction%2C-and-matching

[jack nn]

thanks Mr Image Analyst.

Answer 2

[Alessandro Masullo]

I would suggest you to use normalized cross-correlation first, to get a rough estimate of the position of your object, and then an affine transformation to get the perfect match of your template with the original image.

You can find a very good tutorial here: http://uk.mathworks.com/help/signal/ref/xcorr2.html

[jack nn]

thanks dear Alessandro Masullo.