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| from functools import reduce
|
| from PIL import Image
|
| def compose(*funcs):
| if funcs:
| return reduce(lambda f, g: lambda *a, **kw: g(f(*a, **kw)), funcs)
| else:
| raise ValueError('Composition of empty sequence not supported.')
|
| def letterbox_image(image, size):
| image_w, image_h = image.size
| w, h = size
| new_w = int(image_w * min(w*1.0/image_w, h*1.0/image_h))
| new_h = int(image_h * min(w*1.0/image_w, h*1.0/image_h))
| resized_image = image.resize((new_w,new_h), Image.BICUBIC)
|
| boxed_image = Image.new('RGB', size, (128,128,128))
| boxed_image.paste(resized_image, ((w-new_w)//2,(h-new_h)//2))
| return boxed_image
|
|
