def makeWindowGenerator(multispectralImage, panchromaticImage, windowGeoLength, scanRatio, frame=None):
# Convert windowGeoLength
windowGeoDimensions = windowGeoLength, windowGeoLength
multispectralWindowWidth, multispectralWindowHeight = multispectralImage.convertGeoDimensionsToPixelDimensions(*windowGeoDimensions)
panchromaticWindowWidth, panchromaticWindowHeight = panchromaticImage.convertGeoDimensionsToPixelDimensions(*windowGeoDimensions)
# Use frame
maxRight = multispectralImage.width - multispectralWindowWidth
maxBottom = multispectralImage.height - multispectralWindowHeight
if frame:
left, top, right, bottom = frame
# Include overlap outside frame
right = min(right, maxRight)
bottom = min(bottom, maxBottom)
else:
left, top, right, bottom = 0, 0, maxRight, maxBottom
# Make multispectralWindowLocations
multispectralWindowLocations = [(x, y) for x in xrange(left, right, int(multispectralWindowWidth / scanRatio)) for y in xrange(top, bottom, int(multispectralWindowHeight / scanRatio))]
# Make panchromaticWindowLocations
windowGeoLocations = multispectralImage.convertPixelLocationsToGeoLocations(multispectralWindowLocations)
panchromaticWindowLocations = panchromaticImage.convertGeoLocationsToPixelLocations(windowGeoLocations)
# Count
locationCount = len(windowGeoLocations)
# For each window,
for locationIndex, multispectralWindowLocation, panchromaticWindowLocation in itertools.izip(itertools.count(), multispectralWindowLocations, panchromaticWindowLocations):
# Make window
multispectralPack = multispectralImage, multispectralWindowLocation, (multispectralWindowWidth, multispectralWindowHeight)
panchromaticPack = panchromaticImage, panchromaticWindowLocation, (panchromaticWindowWidth, panchromaticWindowHeight)
yield Window(multispectralPack, panchromaticPack)
# Show feedback
if locationIndex % 10 == 0: view.printPercentUpdate(locationIndex + 1, locationCount)
view.printPercentFinal(locationCount)
def compareLocations(geoDiameter, rawActualLocations, rawPredictedLocations, regionGeoFrames):
# Prepare
actualPointMachine = point_process.PointMachine(rawActualLocations, 'REAL')
predictedPointMachine = point_process.PointMachine(rawPredictedLocations, 'REAL')
heap = {
'actual': set(),
'predicted': set(),
'actualNotPredicted': set(),
'predictedNotActual': set(),
}
# For each regionGeoFrame,
for regionIndex, regionGeoFrame in enumerate(regionGeoFrames):
# Filter
actualLocations = actualPointMachine.getPointsInsideFrame(regionGeoFrame)
predictedLocations = predictedPointMachine.getPointsInsideFrame(regionGeoFrame)
# Get
actualNotPredictedLocations = point_process.extractBadLocations(geoDiameter, actualLocations, rawPredictedLocations)
predictedNotActualLocations = point_process.extractBadLocations(geoDiameter, predictedLocations, rawActualLocations)
# Store
heap['actual'].update(actualLocations)
heap['predicted'].update(predictedLocations)
heap['actualNotPredicted'].update(actualNotPredictedLocations)
heap['predictedNotActual'].update(predictedNotActualLocations)
# Show feedback
view.printPercentUpdate(regionIndex, len(regionGeoFrames))
# Show feedback
view.printPercentFinal(len(regionGeoFrames))
# Return
return heap, {
'actual count': len(heap['actual']),
'predicted count': len(heap['predicted']),
'actual not predicted count': len(heap['actualNotPredicted']),
'predicted not actual count': len(heap['predictedNotActual']),
}
def weightSamples(lushDatasetPath, sampleWeights):
# Compute sampleMultipliers
# sampleMultipliers = computeSampleMultipliers_multiplyBySampleCount(sampleWeights)
sampleMultipliers = computeSampleMultipliers_divideByMinimum(sampleWeights)
print 'max(sampleMultipliers) = %s' % max(sampleMultipliers)
print 'sum(sampleMultipliers) = %s' % sum(sampleMultipliers)
# Set paths
temporaryFolderPath = tempfile.mkdtemp()
weightedTrainingPath = os.path.join(temporaryFolderPath, 'training')
sampleFile, labelFile = [open(x, 'wt') for x in classifier.makeSampleLabelPaths(weightedTrainingPath)]
# Write header
sampleCount = sum(sampleMultipliers)
firstSample = classifier.makeSampleGeneratorFromLushDataset(lushDatasetPath).next()
firstLabel = classifier.makeLabelGeneratorFromLushDataset(lushDatasetPath).next()
sampleFile.write(classifier.makeLushMatrixHeaderFromPart(firstSample, sampleCount))
labelFile.write(classifier.makeLushMatrixHeaderFromPart(firstLabel, sampleCount))
# For each sample and label,
for sampleIndex, sampleMultiplier, sample, label in itertools.izip(itertools.count(1), sampleMultipliers, classifier.makeSampleGeneratorFromLushDataset(lushDatasetPath), classifier.makeLabelGeneratorFromLushDataset(lushDatasetPath)):
for index in xrange(sampleMultiplier):
sampleFile.write(classifier.makeLushMatrixContent(sample))
labelFile.write(classifier.makeLushMatrixContent(label))
if sampleIndex % 100 == 0:
view.printPercentUpdate(sampleIndex, sampleCount)
view.printPercentFinal(sampleCount)
# Close
labelFile.close()
sampleFile.close()
# Return
return weightedTrainingPath, sampleMultipliers
def grapeCluster(vectors, iterationCountPerBurst, maximumPixelDiameter, minimumPixelDiameter):
# If we have no vectors, return empty array
if not vectors:
return []
# Assign all vectors to a single cluster
globalClusters = [numpy.array(vectors)]
globalCount = len(vectors)
globalClusterMeans = []
# While there are globalClusters,
while globalClusters:
# Pop the last cluster
globalCluster = globalClusters.pop()
# Measure size
sizeCategory = measureClusterSize(globalCluster, maximumPixelDiameter, minimumPixelDiameter)
# If it is too big,
if sizeCategory > 0:
# Burst it
# assignments = scipy.cluster.vq.kmeans2(globalCluster, k=2, iter=iterationCountPerBurst)[1]
assignments = Pycluster.kcluster(globalCluster, npass=iterationCountPerBurst)[0]
# Extract localClusters
booleanAssignments = numpy.array(assignments) > 0
localClusters = globalCluster[booleanAssignments], globalCluster[~booleanAssignments]
# Push localClusters to the end of the stack
globalClusters.extend(localClusters)
# If it is the right size, append the weighted mean
elif sizeCategory == 0:
globalClusterMeans.append(computeWeightedMean(globalCluster))
# Show feedback
view.printPercentUpdate(globalCount - len(globalClusters), globalCount)
# Return
view.printPercentFinal(globalCount)
return globalClusterMeans
def extract(self, hasRoof, geoCenters, multispectralImage, panchromaticImage):
# Initialize
windowCount = len(geoCenters)
# For each geoCenter,
for windowIndex, geoCenter in enumerate(geoCenters):
window = [x.extractCenteredGeoWindow(geoCenter, *self.windowGeoDimensions) for x in multispectralImage, panchromaticImage]
if window[0] and window[1]: self.sampleDatabase.addSample(hasRoof, geoCenter, *window)
if windowIndex % 100 == 0:
view.printPercentUpdate(windowIndex + 1, windowCount)
view.printPercentFinal(windowCount)
def save(targetPath, datasetSampleIDs):
# Open targetDataset
targetDataset = Store(targetPath)
# Save samples
sampleCount = len(datasetSampleIDs)
for sampleIndex, (sourceDataset, sampleID) in enumerate(datasetSampleIDs):
targetDataset.addSample(*sourceDataset.getSample(sampleID))
if sampleIndex % 100 == 0:
view.printPercentUpdate(sampleIndex + 1, sampleCount)
view.printPercentFinal(sampleCount)
# Return
return targetDataset
def save(targetPath, datasetSampleIDs):
# Open targetDataset
targetDataset = Store(targetPath)
# Save samples
sampleCount = len(datasetSampleIDs)
for sampleIndex, (sourceDataset, sampleID) in enumerate(datasetSampleIDs):
targetDataset.addSample(*sourceDataset.getSample(sampleID))
if sampleIndex % 100 == 0:
view.printPercentUpdate(sampleIndex + 1, sampleCount)
view.printPercentFinal(sampleCount)
# Return
return targetDataset
def extract(targetDatasetPath, geoCenters, label, windowGeoLength, multispectralImage, panchromaticImage):
# Initialize
dataset = sample_store.create(targetDatasetPath)
windowCount = len(geoCenters)
# For each geoCenter,
for windowIndex, geoCenter in enumerate(geoCenters):
window = [x.extractCenteredGeoWindow(geoCenter, windowGeoLength, windowGeoLength) for x in multispectralImage, panchromaticImage]
if window[0] and window[1]: dataset.addSample(label, geoCenter, *window)
if windowIndex % 100 == 0:
view.printPercentUpdate(windowIndex + 1, windowCount)
view.printPercentFinal(windowCount)
# Return
return dataset
def evaluateWindowsByRegions(probabilityPath, regionPixelFrames):
# Load
scanInformation = probability_store.Information(probabilityPath)
# Initialize
multispectralImage, panchromaticImage, actualGeoCenters, windowPixelDimensions = scanInformation.getPackage()
regionCount = len(regionPixelFrames)
regionLabels_actual = numpy.zeros(regionCount)
pixelCenters_actual = multispectralImage.convertGeoLocationsToPixelLocations(actualGeoCenters)
regionLabels_predicted = numpy.zeros(len(regionPixelFrames))
pixelCenters_predicted = probability_store.loadPredictedPixelCenters(probabilityPath, windowPixelDimensions)
# Build machines
pointMachine_actual = point_process.PointMachine(pixelCenters_actual, 'INTEGER')
pointMachine_predicted = point_process.PointMachine(pixelCenters_predicted, 'INTEGER')
# For each region,
print 'Evaluating windows by region...'
for regionIndex, regionPixelFrame in enumerate(regionPixelFrames):
# Determine actual label
regionLabels_actual[regionIndex] = 1 if pointMachine_actual.getPointsInsideFrame(regionPixelFrame) else 0
# Determine predicted label
regionLabels_predicted[regionIndex] = 1 if pointMachine_predicted.getPointsInsideFrame(regionPixelFrame) else 0
# Show feedback
if regionIndex % 100 == 0:
view.printPercentUpdate(regionIndex, len(regionPixelFrames))
# Show feedback
view.printPercentFinal(len(regionPixelFrames))
# Compute
truePositive = sum((regionLabels_actual == 1) * (regionLabels_predicted == 1))
trueNegative = sum((regionLabels_actual == 0) * (regionLabels_predicted == 0))
falsePositive = sum((regionLabels_actual == 0) * (regionLabels_predicted == 1))
falseNegative = sum((regionLabels_actual == 1) * (regionLabels_predicted == 0))
actualPositive = sum(regionLabels_actual == 1)
actualNegative = sum(regionLabels_actual == 0)
# Count
actualCount = sum(regionLabels_actual)
predictedCount = sum(regionLabels_predicted)
# Return
return {
'region count': regionCount,
'true positive count': truePositive,
'true positive rate': truePositive / float(actualPositive) if actualPositive else None,
'true negative count': trueNegative,
'false positive count': falsePositive,
'false positive rate': falsePositive / float(actualNegative) if actualNegative else None,
'false negative count': falseNegative,
'actual positive count': actualCount,
'predicted positive count': predictedCount,
'precision': truePositive / float(predictedCount) if predictedCount else None,
'recall': truePositive / float(actualCount) if actualCount else None,
}
def extract(targetDatasetPath, label, windowGeoLength, multispectralImage,
panchromaticImage, geoCenters):
# Initialize
dataset = sample_store.create(targetDatasetPath)
windowCount = len(geoCenters)
# For each geoCenter,
for windowIndex, geoCenter in enumerate(geoCenters):
window = [
x.extractCenteredGeoWindow(geoCenter, windowGeoLength,
windowGeoLength)
for x in multispectralImage, panchromaticImage
]
if window[0] and window[1]:
dataset.addSample(label, geoCenter, *window)
if windowIndex % 100 == 0:
view.printPercentUpdate(windowIndex + 1, windowCount)
view.printPercentFinal(windowCount)
# Return
return dataset
def saveSamples(sampleDataset, sampleIDs, featureSet):
# Initialize
sampleCount = len(sampleIDs)
sampleDatasetPath = sampleDataset.getDatasetPath()
sampleInformation = {
'source dataset': {
'path': sampleDatasetPath,
'sample ids': ' '.join(str(x) for x in sampleIDs),
},
'feature': {
'module name': featureSet.__module__,
'class name': featureSet.__class__.__name__,
}
}
targetSampleName = '%s-count%s-min%s' % (folder_store.getFolderName(sampleDatasetPath), sampleCount, min(sampleIDs))
targetSamplePath = os.path.join(store.makeFolderSafely(os.path.join(store.temporaryPath, 'cnn_datasets')), targetSampleName)
# If targetDatasetPath exists, return
if store.loadInformation(targetSamplePath) == sampleInformation:
print 'Using existing samples...\n\ttargetSamplePath = ' + targetSamplePath
return targetSamplePath
# Save
print 'Saving samples...\n\ttargetSamplePath = ' + targetSamplePath
sampleGenerator = makeSampleLabelGeneratorFromSampleDataset(sampleDataset, sampleIDs, featureSet)
sampleFile, labelFile = [open(x, 'wt') for x in makeSampleLabelPaths(targetSamplePath)]
for sampleIndex, (sample, label) in enumerate(sampleGenerator):
# If we are starting, write header
if sampleIndex == 0:
sampleFile.write(makeLushMatrixHeaderFromPart(sample, sampleCount))
labelFile.write(makeLushMatrixHeaderFromPart(label, sampleCount))
# Write content
sampleFile.write(makeLushMatrixContent(sample))
labelFile.write(makeLushMatrixContent(label))
if sampleIndex % 100 == 0:
view.printPercentUpdate(sampleIndex + 1, sampleCount)
view.printPercentFinal(sampleCount)
# Return
labelFile.close(); sampleFile.close()
store.saveInformation(targetSamplePath, sampleInformation)
return targetSamplePath
