How to Rotate an image about center vertical axis?
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
JAI PRAKASH
le 30 Mai 2018
Réponse apportée : Image Analyst
le 30 Mai 2018
Hello I am using Image Processing Toolbox. How to Rotate an image about center vertical axis?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/190911/image.jpeg)
Ofcourse the new pixels in the rotated image would be black ;p Thanks
Réponse acceptée
Guillaume
le 30 Mai 2018
Remember that a images are 2D constructs. They don't have a 3rd dimension and therefore can't be rotated in a 3rd dimension. What you're asking is to simulate the concept of rotating a 2D surface in a 3d space. The actual transformation that simulate that is not a rotation, but a projection. This is achieved by using imwarp with a projective2d transformation (which you can create a number of different ways), e.g.:
tform = projective2d([1 -0.1 0.001; 0 1 0; 0 0 1]);
newimage = imwarp(yourimage, tform);
imshowpair(yourimage, newimage, 'montage');
0 commentaires
Plus de réponses (2)
Image Analyst
le 30 Mai 2018
Steve Eddins's blog talks about this: https://blogs.mathworks.com/steve/2006/08/04/spatial-transformations-defining-and-applying-custom-transforms/
0 commentaires
Image Analyst
le 30 Mai 2018
Did you try the rotation icon in the toolbar of the figure? Then use the File Menu to tell it to generate code.
0 commentaires
Voir également
Catégories
En savoir plus sur Point Cloud Processing dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!