Is it possible to keep the whole image after rotation (without cropping to the original size)?

[bearpaw]

I found that the implementation of rotation forces the size of the rotated image as the same as the source image. Is it possible to keep the full rotated image (as the second cat image)? Thanks.

[bearpaw]

Well, I got a solution here for your reference

require 'image'

l = image.lena()
a = 30 * math.pi / 180
s = math.sin(a)
c = math.cos(a)
h = l:size(2)
w = l:size(3)
hh = math.floor(h*(c+s-1)/2)
ww = math.floor(w*(c+s-1)/2)

src = torch.zeros(3, h*(s+c), w*(s+c))
src[{{},{hh,hh+h-1},{ww,ww+w-1}}] = l
dst = image.rotate(src, a)