extract rectangular image from scanned image
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have scanned copies of currency notes from which I need to extract only the rectangular notes. Although the scanned copies have a very blank background, the note itself can be rotated or aligned correctly. I'm using matlab. how do I extract the currency part and get it aligned to the horizontal axis. I have tried using thresholding and canny/sobel edge detection to no avail. I used the below code but it works only for aligned images and not for rotated images.
<< input image
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/148426/image.jpeg)
output image
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/148428/image.jpeg)
>>
1 commentaire
Réponses (2)
Image Analyst
le 30 Mar 2015
Did you see my answer to your prior question: http://www.mathworks.com/matlabcentral/answers/182427#comment_271921
Did you look up "registration" in the help and try any of the examples with your image?
Image Analyst
le 31 Mar 2015
I'll be traveling today and not have much time. I'm attaching another demo that uses the radon transform to do rotation. Give that a try.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/175719/image.jpeg)
4 commentaires
Image Analyst
le 31 Mar 2015
Then try another method. I'm getting ready to fly to Arizona today and will not have much time to help anyone.
Voir également
Catégories
En savoir plus sur Filter Banks dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!