159 lines
4.9 KiB
Python
159 lines
4.9 KiB
Python
#!/usr/bin/env python3
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# United States Government Sponsorship acknowledged. This software is subject to
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# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
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# (No [Export] License Required except when exporting to an embargoed country,
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# end user, or in support of a prohibited end use). By downloading this software,
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# the user agrees to comply with all applicable U.S. export laws and regulations.
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# The user has the responsibility to obtain export licenses, or other export
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# authority as may be required before exporting this software to any 'EAR99'
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# embargoed foreign country or citizen of those countries.
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#
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# Author: Giangi Sacco
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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from __future__ import print_function
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from isceobj.Location.Offset import OffsetField,Offset
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from iscesys.Component.Component import Component,Port
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from iscesys.Compatibility import Compatibility
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Compatibility.checkPythonVersion()
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from isceobj.Histogram import histogram as hist
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import logging
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logger = logging.getLogger('isce.Util.histogram')
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FILE_NAME = Component.Parameter('fileName',
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public_name='FILE_NAME',
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default=None,
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type=str,
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mandatory=False,
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doc = 'Input filename')
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NUMBER_BINS = Component.Parameter('numberBins',
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public_name = 'NUMBER_BINS',
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default = 40,
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type=int,
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mandatory=False,
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doc = 'Number of quantile bins')
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NULL_VALUE = Component.Parameter('nullValue',
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public_name = 'NULL_VALUE',
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default = 0.0,
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type = float,
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mandatory = False,
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doc = 'Null value in data')
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class Histogram(Component):
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family = 'histogram'
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logging_name = 'isce.isceobj.histogram'
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parameter_list = (FILE_NAME,
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NUMBER_BINS,
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NULL_VALUE,)
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def histogram(self):
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self.createImage()
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accessor = self.image.getImagePointer()
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if self.image.dataType.upper().startswith('C'):
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raise NotImplementedError('Histograms for complex images have not yet been implemented. Might be more efficient to set up filters for amp / phase for complex images and use those as input')
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self.results = hist.complexHistogram_Py(accessor,self.numberBins, self.nullValue)
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else:
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self.results = hist.realHistogram_Py(accessor, self.numberBins, self.nullValue)
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self.image.finalizeImage()
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return
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def createImage(self):
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'''
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Create an image object to pass to C extension.
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'''
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from isceobj.Util.ImageUtil import ImageLib as IML
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img = IML.loadImage(self.fileName)[0]
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if img.dataType.upper().startswith('C'):
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img.setCaster('read','CDOUBLE')
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else:
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img.setCaster('read', 'DOUBLE')
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self.image = img
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self.image.createImage()
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def getStats(self):
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return self.results
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def __init__(self, name=''):
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super(Histogram,self).__init__(family=self.__class__.family, name=name)
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self.image = None
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self.results = None
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self.dictionaryOfOutputVariables = {}
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self.descriptionOfVariables = {}
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self.mandatoryVariables = []
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self.optionalVariables = []
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self.initOptionalAndMandatoryLists()
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return
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#end class
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if __name__ == '__main__':
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'''
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Main driver.
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'''
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def cmdLineParse():
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'''
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Command line parser.
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'''
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parser = argparse.ArgumentParser(description='Compute histogram')
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parser.add_argument('-i', '--input', dest='infile', type=str, required=True,
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help = 'Input file to analyze')
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parser.add_argument('-b', '--bins', dest='numbins', type=int, default=40,
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help = 'Number of bins')
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parser.add_argument('-n', '--null', dest='nullval', type=float, default=0.0,
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help='Null value for data')
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return parser.parse_args()
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inps = cmdLineParse()
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hist = Histogram()
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hist.fileName = inps.infile
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hist.numberBins = inps.numbins
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hist.nullValue = inps.nullval
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hist.histogram()
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###Show stats for band 1 of the image
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quants, vals = hist.getStats()[0]
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for x,y in zip(quants,vals):
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print('QUANT: {0} VALUE: {1}'.format(100*x,y))
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