mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-28 05:27:15 +08:00
François Boulogne
34 lines
705 B
Python
34 lines
705 B
Python
import numpy as np
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from .dtype import dtype_limits
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def invert(image):
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"""Invert an image.
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Substract the image to the maximum value allowed by the dtype maximum.
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Parameters
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----------
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image : ndarray
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The input image.
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Returns
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-------
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invert : ndarray
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Inverted image.
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Examples
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--------
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>>> img = np.array([[100, 0, 200],
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... [0, 50, 0],
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... [30, 0, 255]], np.uint8)
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>>> invert(img)
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array([[155, 255, 55],
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[255, 205, 255],
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[225, 255, 0]], dtype=uint8)
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"""
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if image.dtype == 'bool':
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return ~image
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else:
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return dtype_limits(image)[1] - image
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