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How to Rotate an image about center vertical axis?

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JAI PRAKASH
JAI PRAKASH 2018-5-30
回答： Image Analyst 2018-5-30
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

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Guillaume
Guillaume 2018-5-30
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');

更多回答（2 个）

Image Analyst
Image Analyst 2018-5-30
Image Analyst
Image Analyst 2018-5-30
Did you try the rotation icon in the toolbar of the figure? Then use the File Menu to tell it to generate code.

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