mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-28 03:19:12 +08:00
Johannes Schönberger
44 lines
1.0 KiB
Python
44 lines
1.0 KiB
Python
"""
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========================
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CENSURE feature detector
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========================
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The CENSURE feature detector is a scale-invariant center-surround detector
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(CENSURE) that claims to outperform other detectors and is capable of real-time
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implementation.
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"""
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from skimage import data
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from skimage import transform as tf
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from skimage.feature import CENSURE
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from skimage.color import rgb2gray
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import matplotlib.pyplot as plt
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img1 = rgb2gray(data.lena())
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tform = tf.AffineTransform(scale=(1.5, 1.5), rotation=0.5,
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translation=(150, -200))
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img2 = tf.warp(img1, tform)
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detector = CENSURE()
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fig, ax = plt.subplots(nrows=1, ncols=2)
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plt.gray()
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detector.detect(img1)
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ax[0].imshow(img1)
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ax[0].axis('off')
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ax[0].scatter(detector.keypoints[:, 1], detector.keypoints[:, 0],
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2 ** detector.scales, facecolors='none', edgecolors='r')
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detector.detect(img2)
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ax[1].imshow(img2)
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ax[1].axis('off')
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ax[1].scatter(detector.keypoints[:, 1], detector.keypoints[:, 0],
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2 ** detector.scales, facecolors='none', edgecolors='r')
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plt.show()
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