def nodeToEdgeFeat(nodeFeatures, rag):
uv = rag.uvIds()
uF = nodeFeatures[uv[:, 0], :]
vF = nodeFeatures[uv[:, 1], :]
feats = [
numpy.abs(uF - vF), uF + vF, uF * vF,
numpy.minimum(uF, vF),
numpy.maximum(uF, vF)
]
return numpy.concatenate(feats, axis=1)
def computeFeatures(raw, pmap, rag):
uv = rag.uvIds()
nrag = nifty.graph.rag
# list of all edge features we fill
feats = []
# helper function to convert
# node features to edge features
def nodeToEdgeFeat(nodeFeatures):
uF = nodeFeatures[uv[:, 0], :]
vF = nodeFeatures[uv[:, 1], :]
feats = [
numpy.abs(uF - vF), uF + vF, uF * vF,
numpy.minimum(uF, vF),
numpy.maximum(uF, vF)
]
return numpy.concatenate(feats, axis=1)
# accumulate features from raw data
fRawEdge, fRawNode = nrag.accumulateStandartFeatures(rag=rag,
data=raw,
minVal=0.0,
maxVal=255.0,
numberOfThreads=1)
feats.append(fRawEdge)
feats.append(nodeToEdgeFeat(fRawNode))
# accumulate data from pmap
fPmapEdge, fPmapNode = nrag.accumulateStandartFeatures(rag=rag,
data=pmap,
minVal=0.0,
maxVal=1.0,
numberOfThreads=1)
feats.append(fPmapEdge)
feats.append(nodeToEdgeFeat(fPmapNode))
# accumulate node and edge features from
# superpixels geometry
fGeoEdge = nrag.accumulateGeometricEdgeFeatures(rag=rag, numberOfThreads=1)
feats.append(fGeoEdge)
fGeoNode = nrag.accumulateGeometricNodeFeatures(rag=rag, numberOfThreads=1)
feats.append(nodeToEdgeFeat(fGeoNode))
return numpy.concatenate(feats, axis=1)
def computeFeatures(raw, pmap, rag):
uv = rag.uvIds()
nrag = nifty.graph.rag
# list of all edge features we fill
feats = []
# helper function to convert
# node features to edge features
def nodeToEdgeFeat(nodeFeatures):
uF = nodeFeatures[uv[:,0], :]
vF = nodeFeatures[uv[:,1], :]
feats = [ numpy.abs(uF-vF), uF + vF, uF * vF,
numpy.minimum(uF,vF), numpy.maximum(uF,vF)]
return numpy.concatenate(feats, axis=1)
# accumulate features from raw data
fRawEdge, fRawNode = nrag.accumulateStandartFeatures(rag=rag, data=raw,
minVal=0.0, maxVal=255.0, numberOfThreads=1)
feats.append(fRawEdge)
feats.append(nodeToEdgeFeat(fRawNode))
# accumulate data from pmap
fPmapEdge, fPmapNode = nrag.accumulateStandartFeatures(rag=rag, data=pmap,
minVal=0.0, maxVal=1.0, numberOfThreads=1)
feats.append(fPmapEdge)
feats.append(nodeToEdgeFeat(fPmapNode))
# accumulate node and edge features from
# superpixels geometry
fGeoEdge = nrag.accumulateGeometricEdgeFeatures(rag=rag, numberOfThreads=1)
feats.append(fGeoEdge)
fGeoNode = nrag.accumulateGeometricNodeFeatures(rag=rag, numberOfThreads=1)
feats.append(nodeToEdgeFeat(fGeoNode))
return numpy.concatenate(feats, axis=1)
def getTrainingData(rag, sp, pixelGt, features, settings):
thresholds = settings['fuztGtThreshold']
t0,t1 = thresholds
# compute overlap
overlap = nifty.ground_truth.Overlap(rag.numberOfNodes-1,
sp, pixelGt
)
fuzzyEdgeGt = overlap.differentOverlaps(rag.uvIds())
where0 = numpy.where(fuzzyEdgeGt<t0)
where1 = numpy.where(fuzzyEdgeGt>t1)
f0 = features[where0]
f1 = features[where1]
feat = numpy.concatenate([f0,f1],axis=0)
labels = numpy.ones(feat.shape[0],dtype='uint32')
labels[0:f0.shape[0]] = 0
return feat,labels
seeds = nifty.segmentation.localMaximaSeeds(gtImage)
growMap = nifty.filters.gaussianSmoothing(1.0 - gtImage, 1.0)
growMap += 0.1 * nifty.filters.gaussianSmoothing(1.0 - gtImage, 6.0)
gt = nifty.segmentation.seededWatersheds(growMap, seeds=seeds)
# for benchmarking purposes...
if (ds == 'test'):
data['seeds'] = seeds
data['gt'] = gt
overlap = nifty.ground_truth.overlap(segmentation=overseg,
groundTruth=gt)
edgeGt = overlap.differentOverlaps(rag.uvIds())
data['edgeGt'] = edgeGt
assert (rag.numberOfEdges == features.shape[0])
assert (edgeGt.shape[0] == features.shape[0])
# plot an image from each set
if z % 12 == 0 and plot == 'on':
figure = pylab.figure()
figure.suptitle('%sing Set Slice %d' % (ds, z), fontsize=16)
#fig = matplotlib.pyplot.gcf()
figure.set_size_inches(18.5, 10.5)
figure.add_subplot(3, 2, 1)
pylab.imshow(raw, cmap='gray')
def accumulatedFeatures(raw, pmap, overseg, rag, settings):
#print "bincoutn", numpy.bincount(overseg.reshape([-1])).size,"nNodes",rag.numberOfNodes
uv = rag.uvIds()
u = uv[:, 0]
v = uv[:, 1]
# geometric edge features
geometricFeaturs = nifty.graph.rag.accumulateGeometricEdgeFeatures(
rag, blockShape=[75, 75], numberOfThreads=1)
allEdgeFeat = [geometricFeaturs]
pixelFeats = [
raw[:, :, None],
]
if pmap is not None:
pixelFeats.append(pmap[:, :, None])
for sigma in (1.0, 2.0, 4.0, 6.0, 8.0):
pf = [
vigra.filters.hessianOfGaussianEigenvalues(raw, 1.0 * sigma),
vigra.filters.structureTensorEigenvalues(raw, 1.0 * sigma,
2.0 * sigma),
vigra.filters.gaussianGradientMagnitude(raw, 1.0 * sigma)[:, :,
None],
vigra.filters.gaussianSmoothing(raw, 1.0 * sigma)[:, :, None]
]
pixelFeats.extend(pf)
if pmap is not None:
pixelFeats.append(
vigra.filters.gaussianSmoothing(pmap, 1.0 * sigma)[:, :, None])
pixelFeats.append(
vigra.filters.hessianOfGaussianEigenvalues(pmap, 1.0 * sigma)),
pixelFeats.append(
vigra.filters.structureTensorEigenvalues(
pmap, 1.0 * sigma, 2.0 * sigma))
pixelFeats = numpy.concatenate(pixelFeats, axis=2)
for i in range(pixelFeats.shape[2]):
pixelFeat = pixelFeats[:, :, i]
edgeFeat, nodeFeat = nifty.graph.rag.accumulateStandartFeatures(
rag=rag,
data=pixelFeat.astype('float32'),
minVal=pixelFeat.min(),
maxVal=pixelFeat.max(),
blockShape=[75, 75],
numberOfThreads=10)
uFeat = nodeFeat[u, :]
vFeat = nodeFeat[v, :]
du = numpy.abs(edgeFeat, uFeat)
dv = numpy.abs(edgeFeat, vFeat)
fList = [
uFeat + vFeat, uFeat * vFeat,
numpy.abs(uFeat - vFeat),
numpy.minimum(uFeat, vFeat),
numpy.maximum(uFeat, vFeat), du + dv,
numpy.abs(du - dv),
numpy.minimum(du, dv),
numpy.maximum(du, dv), edgeFeat
]
edgeFeat = numpy.concatenate(fList, axis=1)
allEdgeFeat.append(edgeFeat)
allEdgeFeat = numpy.concatenate(allEdgeFeat, axis=1)
return allEdgeFeat
# local maxima seeds
seeds = nifty.segmentation.localMaximaSeeds(gtImage)
# growing map
growMap = nifty.filters.gaussianSmoothing(1.0 - gtImage, 1.0)
growMap += 0.1 * nifty.filters.gaussianSmoothing(
1.0 - gtImage, 6.0)
gt = nifty.segmentation.seededWatersheds(growMap, seeds=seeds)
# map the gt to the edges
overlap = nifty.ground_truth.overlap(segmentation=overseg,
groundTruth=gt)
# edge gt
edgeGt = overlap.differentOverlaps(rag.uvIds())
data['edgeGt'] = edgeGt
# plot each 14th
if z % 14 == 0:
figure = pylab.figure()
figure.suptitle('Training Set Slice %d' % z, fontsize=20)
#fig = matplotlib.pyplot.gcf()
figure.set_size_inches(18.5, 10.5)
figure.add_subplot(3, 2, 1)
pylab.imshow(raw, cmap='gray')
pylab.title("Raw data %s" % (ds))
figure.add_subplot(3, 2, 2)
# local maxima seeds
seeds = nifty.segmentation.localMaximaSeeds(gtImage)
# growing map
growMap = nifty.filters.gaussianSmoothing(1.0-gtImage, 1.0)
growMap += 0.1*nifty.filters.gaussianSmoothing(1.0-gtImage, 6.0)
gt = nifty.segmentation.seededWatersheds(growMap, seeds=seeds)
# map the gt to the edges
overlap = nifty.ground_truth.overlap(segmentation=overseg,
groundTruth=gt)
# edge gt
edgeGt = overlap.differentOverlaps(rag.uvIds())
data['edgeGt'] = edgeGt
# plot each 14th
if z % 14 == 0 :
figure = pylab.figure()
figure.suptitle('Training Set Slice %d'%z, fontsize=20)
#fig = matplotlib.pyplot.gcf()
figure.set_size_inches(18.5, 10.5)
figure.add_subplot(3, 2, 1)
pylab.imshow(raw, cmap='gray')
pylab.title("Raw data %s"%(ds))
