mirror of
https://github.com/wassname/scikit-image.git
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emmanuelle
55f5103dd8
Modified travis_script.sh to account for the new structure of the gallery Added README.txt files in directories of gallery examples Fixed references to gallery images in user guide pages Fixed broken links
38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
"""
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=========================
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Interpolation: Edge Modes
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=========================
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This example illustrates the different edge modes available during
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interpolation in routines such as `skimage.transform.rescale` and
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`skimage.transform.resize`.
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"""
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from skimage._shared.interpolation import extend_image
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import skimage.data
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import matplotlib.pyplot as plt
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import numpy as np
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img = np.zeros((16, 16))
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img[:8, :8] += 1
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img[:4, :4] += 1
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img[:2, :2] += 1
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img[:1, :1] += 2
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img[8, 8] = 4
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modes = ['constant', 'edge', 'wrap', 'reflect', 'symmetric']
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fig, axes = plt.subplots(1, 5, figsize=(15, 5))
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for n, mode in enumerate(modes):
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img_extended = extend_image(img, pad=img.shape[0], mode=mode)
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axes[n].imshow(img_extended, cmap=plt.cm.gray, interpolation='nearest')
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axes[n].plot([15.5, 15.5], [15.5, 31.5], 'y--', linewidth=0.5)
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axes[n].plot([31.5, 31.5], [15.5, 31.5], 'y--', linewidth=0.5)
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axes[n].plot([15.5, 31.5], [15.5, 15.5], 'y--', linewidth=0.5)
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axes[n].plot([15.5, 31.5], [31.5, 31.5], 'y--', linewidth=0.5)
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axes[n].set_axis_off()
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axes[n].set_aspect('equal')
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axes[n].set_title(mode)
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plt.tight_layout()
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plt.show()
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