401 lines
15 KiB
Python
Executable File
401 lines
15 KiB
Python
Executable File
#!/usr/bin/env python3
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Copyright 2010 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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import sys
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import os
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import math
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import numpy as np
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import logging
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from iscesys.Component.Component import Component,Port
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from stdproc.stdproc.resamp_slc import resamp_slc
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from isceobj.Util import combinedlibmodule as CL
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import isceobj
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from iscesys.ImageUtil.ImageUtil import ImageUtil as IU
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from isceobj.Util import Poly2D
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class Resamp_slc(Component):
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interpolationMethods = { 'SINC' : 0,
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'BILINEAR' : 1,
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'BICUBIC' : 2,
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'NEAREST' : 3,
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'AKIMA' : 4,
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'BIQUINTIC': 5}
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def resamp_slc(self, imageIn=None, imageOut=None):
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for port in self.inputPorts:
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port()
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if imageIn is not None:
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self.imageIn = imageIn
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if self.imageIn is None:
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self.logger.error("Input slc image not set.")
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raise Exception
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if imageOut is not None:
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self.imageOut = imageOut
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if self.imageOut is None:
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self.logger.error("Output slc image not set.")
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raise Exception
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self.setDefaults()
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self.createImages()
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self.setState()
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resamp_slc.setRangeCarrier_Py(self.rangeCarrierAccessor)
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resamp_slc.setAzimuthCarrier_Py(self.azimuthCarrierAccessor)
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resamp_slc.setRangeOffsetsPoly_Py(self.rangeOffsetsAccessor)
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resamp_slc.setAzimuthOffsetsPoly_Py(self.azimuthOffsetsAccessor)
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resamp_slc.setDopplerPoly_Py(self.dopplerAccessor)
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resamp_slc.resamp_slc_Py(self.imageInAccessor,self.imageOutAccessor,self.residualAzimuthAccessor, self.residualRangeAccessor)
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self.destroyImages()
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return
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def createImages(self):
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if self.imageIn._accessor is None:
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self.imageIn.createImage()
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self.imageInAccessor = self.imageIn.getImagePointer()
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if self.imageOut._accessor is None:
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self.imageOut.createImage()
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self.imageOutAccessor = self.imageOut.getImagePointer()
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if self.rangeCarrierPoly is not None:
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self.rangeCarrierAccessor = self.rangeCarrierPoly.exportToC()
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else:
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print('No Range Carrier provided.')
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print('Assuming zero range carrier.')
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poly = Poly2D.Poly2D()
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poly.initPoly(rangeOrder=0, azimuthOrder=0, coeffs=[[0.]])
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self.rangeCarrierAccessor = poly.exportToC()
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if self.azimuthCarrierPoly is not None:
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self.azimuthCarrierAccessor = self.azimuthCarrierPoly.exportToC()
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else:
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poly = Poly2D.Poly2D()
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poly.initPoly(rangeOrder=0, azimuthOrder=0, coeffs=[[0.]])
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self.azimuthCarrierAccessor = poly.exportToC()
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print('No Azimuth Carrier provided.')
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print('Assuming zero azimuth carrier.')
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if self.rangeOffsetsPoly is not None:
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self.rangeOffsetsAccessor = self.rangeOffsetsPoly.exportToC()
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else:
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print('No range offset polynomial provided')
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poly = Poly2D.Poly2D()
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poly.initPoly(rangeOrder=0, azimuthOrder=0, coeffs=[[0.]])
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self.rangeOffsetsAccessor = poly.exportToC()
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if self.azimuthOffsetsPoly is not None:
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self.azimuthOffsetsAccessor = self.azimuthOffsetsPoly.exportToC()
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else:
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print('No azimuth offset polynomial provided')
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poly = Poly2D.Poly2D()
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poly.initPoly(rangeOrder=0, azimuthOrder=0, coeffs = [[0.]])
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self.azimuthOffsetsAccessor = poly.exportToC()
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if self.residualRangeImage is not None:
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if self.residualRangeImage._accessor is None:
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self.residualRangeImage.setCaster('read', 'DOUBLE')
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self.residualRangeImage.createImage()
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self.residualRangeAccessor = self.residualRangeImage.getImagePointer()
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else:
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self.residualRangeAccessor = 0
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if self.residualAzimuthImage is not None:
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if self.residualAzimuthImage._accessor is None:
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self.residualAzimuthImage.setCaster('read', 'DOUBLE')
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self.residualAzimuthImage.createImage()
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self.residualAzimuthAccessor = self.residualAzimuthImage.getImagePointer()
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else:
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self.residualAzimuthAccessor = 0
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if self.dopplerPoly is not None:
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self.dopplerAccessor = self.dopplerPoly.exportToC()
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else:
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print('No doppler polynomial provided')
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print('Assuming zero doppler centroid')
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poly = Poly2D.Poly2D()
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poly.initPoly(rangeOrder=0, azimuthOrder=0, coeffs=[[0.]])
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self.dopplerAccessor = poly.exportToC()
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def destroyImages(self):
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CL.freeCPoly2D(self.rangeCarrierAccessor)
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CL.freeCPoly2D(self.azimuthCarrierAccessor)
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CL.freeCPoly2D(self.rangeOffsetsAccessor)
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CL.freeCPoly2D(self.azimuthOffsetsAccessor)
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CL.freeCPoly2D(self.dopplerAccessor)
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if self.residualRangeImage is not None:
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self.residualRangeImage.finalizeImage()
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if self.residualAzimuthImage is not None:
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self.residualAzimuthImage.finalizeImage()
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self.imageIn.finalizeImage()
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self.imageOut.finalizeImage()
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return
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def setDefaults(self):
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if self.inputLines is None:
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self.inputLines = self.imageIn.getLength()
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self.logger.warning('The variable INPUT_LINES has been set to the default value %d which is the number of lines in the slc image.' % (self.inputLines))
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if self.inputWidth is None:
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self.inputWidth = self.imageIn.getWidth()
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self.logger.warning('The variable INPUT_WIDTH has been set to the default value %d which is the width of the slc image.' % (self.inputWidth))
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if self.inputWidth != self.imageIn.getWidth():
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raise Exception('Width of input image {0} does not match specified width {1}'.format(self.imageIn.getWidth(), self.inputWidth))
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if self.startingRange is None:
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self.startingRange = 0.0
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if self.referenceStartingRange is None:
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self.referenceStartingRange = self.startingRange
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if self.referenceSlantRangePixelSpacing is None:
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self.referenceSlantRangePixelSpacing = self.slantRangePixelSpacing
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if self.referenceWavelength is None:
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self.referenceWavelength = self.radarWavelength
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if self.outputLines is None:
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self.outputLines = self.imageOut.getLength()
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self.logger.warning('The variable OUTPUT_LINES has been set to the default value %d which is the number of lines in the slc image.'%(self.outputLines))
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if self.outputWidth is None:
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self.outputWidth = self.imageOut.getWidth()
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self.logger.warning('The variable OUTPUT_WIDTH has been set to the default value %d which is the width of the slc image.'%(self.outputWidth))
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if (self.outputWidth != self.imageOut.getWidth()):
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raise Exception('Width of output image {0} does not match specified width {1}'.format(self.imageOut.getWidth(), self.outputWidth))
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if self.imageIn.dataType.upper().startswith('C'):
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self.isComplex = True
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else:
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self.isComplex = False
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if self.imageIn.getBands() > 1:
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raise Exception('The code currently is setup to resample single band images only')
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if self.method is None:
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if self.isComplex:
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self.method = 'SINC'
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else:
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self.method = 'BILINEAR'
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if self.flatten is None:
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self.logger.warning('No flattening requested')
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self.flatten = False
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return
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def setState(self):
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resamp_slc.setInputWidth_Py(int(self.inputWidth))
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resamp_slc.setInputLines_Py(int(self.inputLines))
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resamp_slc.setOutputWidth_Py(int(self.outputWidth))
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resamp_slc.setOutputLines_Py(int(self.outputLines))
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resamp_slc.setRadarWavelength_Py(float(self.radarWavelength))
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resamp_slc.setSlantRangePixelSpacing_Py(float(self.slantRangePixelSpacing))
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###Introduced for dealing with data with different range sampling frequencies
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resamp_slc.setReferenceWavelength_Py(float(self.referenceWavelength))
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resamp_slc.setStartingRange_Py(float(self.startingRange))
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resamp_slc.setReferenceStartingRange_Py(float(self.referenceStartingRange))
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resamp_slc.setReferenceSlantRangePixelSpacing_Py(float(self.referenceSlantRangePixelSpacing))
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intpKey = self.interpolationMethods[self.method.upper()]
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resamp_slc.setMethod_Py(int(intpKey))
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resamp_slc.setIsComplex_Py(int(self.isComplex))
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resamp_slc.setFlatten_Py(int(self.flatten))
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return
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def setInputWidth(self,var):
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self.inputWidth = int(var)
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return
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def setInputLines(self, var):
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self.inputLines = int(var)
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return
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def setOutputWidth(self, var):
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self.outputWidth = int(var)
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return
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def setOutputLines(self,var):
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self.outputLines = int(var)
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return
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def setRadarWavelength(self,var):
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self.radarWavelength = float(var)
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return
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def setSlantRangePixelSpacing(self,var):
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self.slantRangePixelSpacing = float(var)
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return
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def __getstate__(self):
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d = dict(self.__dict__)
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del d['logger']
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return d
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def __setstate__(self,d):
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self.__dict__.update(d)
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self.logger = logging.getLogger('isce.stdproc.resamp_slc')
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return
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def addOffsets(self):
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from isceobj.Util.Poly2D import Poly2D
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offsets = self._inputPorts['offsets']
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if offsets:
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polys = offsets.getFitPolynomials()
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self.azimuthOffsetsPoly = polys[0]
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self.rangeOffsetsPoly = polys[1]
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def addSlc(self):
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from isceobj.Util import Poly2D
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from isceobj.Constants import SPEED_OF_LIGHT
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formslc = self._inputPorts['slc']
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if (formslc):
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####Set up azimuth carrier information
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coeffs = []
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coeffs.append([2*np.pi*val for val in formslc.dopplerCentroidCoefficients])
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self.dopplerPoly = Poly2D.Poly2D()
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self.dopplerPoly.initPoly(rangeOrder=len(formslc.dopplerCentroidCoefficients)-1, azimuthOrder=0, coeffs=coeffs)
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######Setup range carrier information
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delr = 0.5*SPEED_OF_LIGHT / formslc.rangeSamplingRate
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self.slantRangePixelSpacing = delr
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self.radarWavelength = formslc.radarWavelength
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# coeffs = [[0.0, -4 * np.pi * delr/self.radarWavelength]]
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# self.rangeCarrierPoly = Poly2D.Poly2D()
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# self.rangeCarrierPoly.initPoly(rangeOrder=1, azimuthOrder=0, coeffs=coeffs)
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img = isceobj.createImage()
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IU.copyAttributes(formslc.slcImage, img)
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img.setAccessMode('read')
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self.imageIn = img
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def addReferenceImage(self):
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refImg = self._inputPorts['reference']
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if (refImg):
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self.outputWidth = refImg.getWidth()
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self.outputLines = refImg.getLength()
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def __init__(self):
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Component.__init__(self)
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self.inputWidth = None
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self.inputLines = None
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self.outputWidth = None
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self.outputLines = None
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self.radarWavelength = None
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self.slantRangePixelSpacing = None
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self.azimuthOffsetsPoly = None
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self.azimuthOffsetsAccessor = None
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self.rangeOffsetsPoly = None
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self.rangeOffsetsAccessor = None
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self.rangeCarrierPoly = None
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self.rangeCarrierAccessor = None
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self.azimuthCarrierPoly = None
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self.azimuthCarrierAccessor = None
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self.residualRangeImage = None
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self.residualAzimuthImage = None
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self.residualRangeAccessor = None
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self.residualAzimuthAccessor = None
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self.dopplerPoly = None
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self.dopplerAccessor = None
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self.isComplex = None
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self.method = None
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self.flatten = None
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self.startingRange = None
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self.referenceWavelength = None
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self.referenceStartingRange = None
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self.referenceSlantRangePixelSpacing = None
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self.logger = logging.getLogger('isce.stdproc.resamp_slc')
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offsetPort = Port(name='offsets', method=self.addOffsets)
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slcPort = Port(name='slc', method=self.addSlc)
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referencePort = Port(name='reference', method=self.addReferenceImage)
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self._inputPorts.add(offsetPort)
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self._inputPorts.add(slcPort)
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self._inputPorts.add(referencePort)
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self.dictionaryOfVariables = { \
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'INPUT_WIDTH' : ['self.inputWidth', 'int','mandatory'], \
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'INPUT_LINES' : ['self.inputLines', 'int','optional'], \
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'OUTPUT_LINES' : ['self.outputLines', 'int', 'optional'], \
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'OUTPUT_WIDTH' : ['self.outputWidth', 'int', 'optional'], \
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'RADAR_WAVELENGTH' : ['self.radarWavelength', 'float','mandatory'], \
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'SLANT_RANGE_PIXEL_SPACING' : ['self.slantRangePixelSpacing', 'float','mandatory'], \
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}
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self.dictionaryOfOutputVariables = { }
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return
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#end class
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if __name__ == "__main__":
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sys.exit(main())
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