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Full test coverage for regionprops

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This commit is contained in:
Johannes Schönberger
2012-10-06 19:23:58 +02:00
parent bee7223481
commit db76b212c7
1 changed files with 27 additions and 4 deletions
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skimage/measure/tests/test_regionprops.py
+27 -4
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@@ -1,9 +1,9 @@
from numpy.testing import assert_array_equal, assert_almost_equal, \
assert_array_almost_equal
assert_array_almost_equal, assert_raises
import numpy as np
import math
from skimage.measure import regionprops
from skimage.measure._regionprops import regionprops, PROPS, perimeter
SAMPLE = np.array(
@@ -22,6 +22,16 @@ INTENSITY_SAMPLE = SAMPLE.copy()
INTENSITY_SAMPLE[1, 9:11] = 2
def test_unsupported_dtype():
assert_raises(TypeError, regionprops, np.zeros((10, 10), dtype=np.double))
def test_all_props():
props = regionprops(SAMPLE, 'all', INTENSITY_SAMPLE)[0]
for prop in PROPS:
assert prop in props
def test_area():
area = regionprops(SAMPLE, ['Area'])[0]['Area']
assert area == np.sum(SAMPLE)
@@ -90,6 +100,11 @@ def test_eccentricity():
eps = regionprops(SAMPLE, ['Eccentricity'])[0]['Eccentricity']
assert_almost_equal(eps, 0.814629313427)
img = np.zeros((5, 5), dtype=np.int)
img[2, 2] = 1
eps = regionprops(img, ['Eccentricity'])[0]['Eccentricity']
assert_almost_equal(eps, 0)
def test_equiv_diameter():
diameter = regionprops(SAMPLE, ['EquivDiameter'])[0]['EquivDiameter']
@@ -142,6 +157,11 @@ def test_filled_area():
assert area == np.sum(SAMPLE)
def test_filled_image():
img = regionprops(SAMPLE, ['FilledImage'])[0]['FilledImage']
assert_array_equal(img, SAMPLE)
def test_major_axis_length():
length = regionprops(SAMPLE, ['MajorAxisLength'])[0]['MajorAxisLength']
# MATLAB has different interpretation of ellipse than found in literature,
@@ -220,8 +240,11 @@ def test_orientation():
assert_almost_equal(orientation_diag, -math.pi / 4)
def test_perimeter():
perimeter = regionprops(SAMPLE, ['Perimeter'])[0]['Perimeter']
assert_almost_equal(perimeter, 59.2132034355964)
per = regionprops(SAMPLE, ['Perimeter'])[0]['Perimeter']
assert_almost_equal(per, 59.2132034355964)
per = perimeter(SAMPLE, neighbourhood=8)
assert_almost_equal(per, 43.1213203436)
def test_solidity():
solidity = regionprops(SAMPLE, ['Solidity'])[0]['Solidity']