How to Rotate an image about center vertical axis?

Hello I am using Image Processing Toolbox. How to Rotate an image about center vertical axis?

Ofcourse the new pixels in the rotated image would be black ;p Thanks

[Florian Morsch]

This might help you: https://stackoverflow.com/questions/32299887/rotate-image-over-x-y-and-z-axis-in-matlab

Answer 1

[Guillaume]

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');

Answer 2

[Image Analyst]

Steve Eddins's blog talks about this: https://blogs.mathworks.com/steve/2006/08/04/spatial-transformations-defining-and-applying-custom-transforms/

Answer 3

[Image Analyst]

Did you try the rotation icon in the toolbar of the figure? Then use the File Menu to tell it to generate code.