rotate

rotate

skimage.transform.rotate(image, angle, resize=False, center=None, order=1, mode='constant', cval=0, clip=True, preserve_range=False) [source]

Rotate image by a certain angle around its center.

Parameters:	image : ndarray Input image. angle : float Rotation angle in degrees in counter-clockwise direction. resize : bool, optional Determine whether the shape of the output image will be automatically calculated, so the complete rotated image exactly fits. Default is False. center : iterable of length 2 The rotation center. If center=None, the image is rotated around its center, i.e. center=(rows / 2 - 0.5, cols / 2 - 0.5).
Returns:	rotated : ndarray Rotated version of the input.
Other Parameters:
	order : int, optional The order of the spline interpolation, default is 1. The order has to be in the range 0-5. See skimage.transform.warp for detail. mode : {‘constant’, ‘edge’, ‘symmetric’, ‘reflect’, ‘wrap’}, optional Points outside the boundaries of the input are filled according to the given mode. Modes match the behaviour of numpy.pad. cval : float, optional Used in conjunction with mode ‘constant’, the value outside the image boundaries. clip : bool, optional Whether to clip the output to the range of values of the input image. This is enabled by default, since higher order interpolation may produce values outside the given input range. preserve_range : bool, optional Whether to keep the original range of values. Otherwise, the input image is converted according to the conventions of img_as_float.

Examples

>>> from skimage import data
>>> from skimage.transform import rotate
>>> image = data.camera()
>>> rotate(image, 2).shape
(512, 512)
>>> rotate(image, 2, resize=True).shape
(530, 530)
>>> rotate(image, 90, resize=True).shape
(512, 512)