134 lines
3.7 KiB
Python
134 lines
3.7 KiB
Python
#
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# Author: Piyush Agram
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# Copyright 2016
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#
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import sys
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import isceobj
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from contrib.Snaphu.Snaphu import Snaphu
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from isceobj.Constants import SPEED_OF_LIGHT
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from isceobj.Planet.Planet import Planet
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import os
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import numpy as np
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from isceobj.TopsProc.runIon import maskUnwrap
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def runUnwrap(self,costMode = None,initMethod = None, defomax = None, initOnly = None):
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if costMode is None:
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costMode = 'DEFO'
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if initMethod is None:
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initMethod = 'MST'
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if defomax is None:
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defomax = 4.0
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if initOnly is None:
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initOnly = False
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wrapName = os.path.join( self._insar.mergedDirname, self._insar.filtFilename)
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unwrapName = os.path.join( self._insar.mergedDirname, self._insar.unwrappedIntFilename)
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img = isceobj.createImage()
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img.load(wrapName + '.xml')
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swathList = self._insar.getValidSwathList(self.swaths)
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for swath in swathList[0:1]:
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ifg = self._insar.loadProduct( os.path.join(self._insar.fineIfgDirname, 'IW{0}.xml'.format(swath)))
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wavelength = ifg.bursts[0].radarWavelength
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width = img.getWidth()
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####tmid
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tstart = ifg.bursts[0].sensingStart
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tend = ifg.bursts[-1].sensingStop
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tmid = tstart + 0.5*(tend - tstart)
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#some times tmid may exceed the time span, so use mid burst instead
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#14-APR-2018, Cunren Liang
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#orbit = ifg.bursts[0].orbit
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burst_index = np.int(np.around(len(ifg.bursts)/2))
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orbit = ifg.bursts[burst_index].orbit
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peg = orbit.interpolateOrbit(tmid, method='hermite')
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refElp = Planet(pname='Earth').ellipsoid
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llh = refElp.xyz_to_llh(peg.getPosition())
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hdg = orbit.getENUHeading(tmid)
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refElp.setSCH(llh[0], llh[1], hdg)
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earthRadius = refElp.pegRadCur
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altitude = llh[2]
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corrfile = os.path.join(self._insar.mergedDirname, self._insar.coherenceFilename)
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rangeLooks = self.numberRangeLooks
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azimuthLooks = self.numberAzimuthLooks
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azfact = 0.8
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rngfact = 0.8
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corrLooks = rangeLooks * azimuthLooks/(azfact*rngfact)
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maxComponents = 20
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snp = Snaphu()
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snp.setInitOnly(initOnly)
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snp.setInput(wrapName)
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snp.setOutput(unwrapName)
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snp.setWidth(width)
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snp.setCostMode(costMode)
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snp.setEarthRadius(earthRadius)
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snp.setWavelength(wavelength)
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snp.setAltitude(altitude)
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snp.setCorrfile(corrfile)
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snp.setInitMethod(initMethod)
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snp.setCorrLooks(corrLooks)
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snp.setMaxComponents(maxComponents)
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snp.setDefoMaxCycles(defomax)
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snp.setRangeLooks(rangeLooks)
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snp.setAzimuthLooks(azimuthLooks)
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snp.setCorFileFormat('FLOAT_DATA')
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snp.prepare()
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snp.unwrap()
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######Render XML
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outImage = isceobj.Image.createUnwImage()
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outImage.setFilename(unwrapName)
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outImage.setWidth(width)
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outImage.setAccessMode('read')
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outImage.renderVRT()
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outImage.createImage()
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outImage.finalizeImage()
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outImage.renderHdr()
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#####Check if connected components was created
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if snp.dumpConnectedComponents:
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connImage = isceobj.Image.createImage()
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connImage.setFilename(unwrapName+'.conncomp')
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#At least one can query for the name used
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self._insar.connectedComponentsFilename = unwrapName+'.conncomp'
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connImage.setWidth(width)
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connImage.setAccessMode('read')
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connImage.setDataType('BYTE')
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connImage.renderVRT()
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connImage.createImage()
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connImage.finalizeImage()
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connImage.renderHdr()
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#mask the areas where values are zero.
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#15-APR-2018, Cunren Liang
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maskUnwrap(unwrapName, wrapName)
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return
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def runUnwrapMcf(self):
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runUnwrap(self,costMode = 'SMOOTH',initMethod = 'MCF', defomax = 2, initOnly = True)
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return
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