def rescale(img: Image,
scale: Union[float, Tuple[float, float]],
kernel: str = Kernel.LINEAR) -> Image:
if isinstance(scale, float):
return img.resize(scale, kernel=kernel)
else:
scale, vscale = scale
return img.resize(scale, vscale=vscale, kernel=kernel)
def pyvips_resize_by_size(img: Image,
size: Tuple[int, int],
kernel: str = Kernel.LINEAR) -> Image:
"""
size -> height, width
"""
# w, h = size
h, w = size
scale = w / img.width
vscale = h / img.height
return img.resize(scale, vscale=vscale, kernel=kernel)
def resize(img: Image,
size: Union[int, Tuple[int, int]],
kernel: str = Kernel.LINEAR):
"""
(h, w)
"""
if isinstance(size, int):
w, h = img.width, img.height
if (w <= h and w == size) or (h <= w and h == size):
return img
# resize shorter edge
if w < h:
scale = size / w
else:
scale = size / h
return img.resize(scale, kernel=kernel)
else:
return pyvips_resize_by_size(img, size, kernel=kernel)