def test_hssa_homogeneity_measure():
"""Can we establish homogeneity measure?"""
hs = loadImage()
threshold = .5
limit = 3
sgm = hssa.HSSA(hs, threshold, limit)
frame = sgm.heterogenous[0]
assert frame.homogeneity > 0 and frame.homogeneity < 1
def test_limit_hssa():
"""Is HSSA working with limits?"""
hs = loadImage()
threshold = .98
jthreshold = .98
limit = 4
sgm = hssa.HSSA(hs, threshold, jthreshold, limit)
sgm.process()
assert len(sgm.homogenous) > 0 and len(sgm.heterogenous) == 0
def test_hssa_frame_signature():
"""Can we establish frame signature?"""
hs = loadImage()
threshold = .5
limit = 3
sgm = hssa.HSSA(hs, threshold, limit)
frame = sgm.heterogenous[0]
print frame
assert len(frame.signature) == hs.bands
def test_dumb_hssa():
"""Is HSSA working?"""
hs = loadImage()
threshold = .98
jthreshold = .98
limit = 2
sgm = hssa.HSSA(hs, threshold, jthreshold, limit)
while not sgm.isComplete:
sgm.step()
assert len(sgm.homogenous) > 0 and len(sgm.heterogenous) == 0
def test_hssa_final():
"""Production!"""
hs = loadImage()
threshold = .995
jthreshold = .995
limit = 6
sgm = hssa.HSSA(hs, threshold, jthreshold, limit)
sgm.process()
sgm.post()
representation = sgm.representation()
print len(representation)
def test_is_dividing_working():
"""Can we divide a frame properly?"""
hs = loadImage()
threshold = .5
limit = 3
sgm = hssa.HSSA(hs, threshold, limit)
frame = sgm.heterogenous[0]
thirdStageLocations = []
newFrames = frame.divide()
newerFrames = []
for frame in newFrames:
newerFrames.extend(frame.divide())
for frame in newerFrames:
newestFrames = frame.divide()
for nFrame in newestFrames:
thirdStageLocations.append(nFrame.location)
assert sorted(thirdStageLocations) == list(xrange(0, 64))
def test_hssa_init():
"""Can we create HSSA?"""
hs = loadImage()
threshold = .5
limit = 3
hssa.HSSA(hs, threshold, limit)