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Rescale intensity to enhance image output

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This commit is contained in:
Nicolas Rougier
2015-08-28 21:35:36 +02:00
parent 31f44f475f
commit d395d0cf2b
1 changed files with 4 additions and 3 deletions
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doc/examples/plot_adapt_rgb.py
+4 -3
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@@ -42,6 +42,7 @@ image:
"""
from skimage import data
from skimage.exposure import rescale_intensity
import matplotlib.pyplot as plt
image = data.astronaut()
@@ -51,12 +52,12 @@ ax_each = fig.add_subplot(121)
ax_hsv = fig.add_subplot(122)
# We use 1 - sobel_each(image) but this will not work if image is not normalized
ax_each.imshow(1-sobel_each(image))
ax_each.imshow( rescale_intensity(1-sobel_each(image)))
ax_each.set_xticks([]), ax_each.set_yticks([])
ax_each.set_title("Sobel filter computed\n on individual RGB channels")
# We use 1 - sobel_hsv(image) but this will not work if image is not normalized
ax_hsv.imshow(1-sobel_hsv(image))
ax_hsv.imshow( rescale_intensity((1-sobel_hsv(image))))
ax_hsv.set_xticks([]), ax_hsv.set_yticks([])
ax_hsv.set_title("Sobel filter computed\n on (V)alue converted image (HSV)")
@@ -108,7 +109,7 @@ fig = plt.figure( figsize=(7,7) )
ax = fig.add_subplot(111)
# We use 1 - sobel_gray(image) but this will not work if image is not normalized
ax.imshow(1-sobel_gray(image), cmap=plt.cm.gray)
ax.imshow( rescale_intensity(1-sobel_gray(image)), cmap=plt.cm.gray)
ax.set_xticks([]), ax.set_yticks([])
ax.set_title("Sobel filter computed\n on the converted grayscale image")