def test_plugin():
img = skimage.img_as_float(data.moon())
viewer = ImageViewer(img)
def median_filter(img, radius=3):
return median(img, selem=disk(radius=radius))
plugin = Plugin(image_filter=median_filter)
viewer += plugin
plugin += Slider('radius', 1, 5)
assert_almost_equal(np.std(viewer.image), 12.556, 3)
plugin.filter_image()
assert_almost_equal(np.std(viewer.image), 12.931, 3)
plugin.show()
plugin.close()
plugin.clean_up()
img, _ = plugin.output()
assert_equal(img, viewer.image)
==================================
Demo of a CollectionViewer for viewing collections of images with the
`autolevel` rank filter connected as a plugin.
"""
from skimage import data
from skimage.filter import rank
from skimage.morphology import disk
from skimage.viewer import CollectionViewer
from skimage.viewer.widgets import Slider
from skimage.viewer.plugins.base import Plugin
# Wrap autolevel function to make the disk size a filter argument.
def autolevel(image, disk_size):
return rank.autolevel(image, disk(disk_size))
img_collection = [data.camera(), data.coins(), data.text()]
plugin = Plugin(image_filter=autolevel)
plugin += Slider("disk_size", 2, 8, value_type="int")
plugin.name = "Autolevel"
viewer = CollectionViewer(img_collection)
viewer += plugin
viewer.show()
