I am having an image I want to rotate by 30,45 and 90 degree

If I use imrotate(),it enlarges the size of the image .Without enlarging the size of the image,the image has to be rotated in 30,45 and 90 degree.How to get this?

[Walter Roberson]

Is it acceptable that parts of the image will get cut off when rotated?

Is this just about how it shows up on the display? Rotating on the display without changing it is not difficult.

Answer 1

[Image Analyst]

Use imrotate(). There are options for enlarging or for clipping the corners that would rotate out of the original boundaries.

[DGM]

An example using non-default cropping and interpolation options:

inpict = imread('peppers.png');
outpict = imrotate(inpict,30,'bilinear','crop');
imshow(outpict)

Maybe you expected different padding color?

https://www.mathworks.com/matlabcentral/answers/499506-how-to-change-background-color-with-imrotate

Maybe you wanted to rotate the image around a point other than the center?

imwarp() (R2013b+)

affine2d() (R2013b+)

rigid2d() (R2020b - R2022b)

rigidtform2d() (R2022b+)

Prior to R2013b, you'll have to look into imtransform() or just pad and use imrotate().