Comparing two binary images
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Hello i'm trying to build a matlab function which is capable of locating the location of an image inside another one : as in the picture
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/156219/image.jpeg)
the picture to the right doesn't have the same size as that in the one to the left i tried various method like subtracting the two image , the objective of this is to extract a number which is located beside this tree for that i want to locate the treee then extract the number using ocr , im not experienced in image processing i hope you guide me to the right track. Regards
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Accepted Answer
Elvin
on 5 Feb 2014
You can try this method: http://www.mathworks.com/help/vision/gs/object-detection-and-tracking.html#btt5qyu
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Image Analyst
on 6 Feb 2014
There is SIFT - Scale Invariant Feature Transform, but that's been patented so you can use an similar alternate: SURF. The authors also patented SURF or something related to it, but the good news is that it's built into the Computer Vision System Toolbox. The bad news is that it's pretty challenging to use for novices like you. Good luck.
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