101 lines
3.2 KiB
Python
101 lines
3.2 KiB
Python
#
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# Author: Piyush Agram
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# Copyright 2016
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#
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import logging
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import isceobj
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import mroipac
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from isceobj.Util.ImageUtil import DemImageLib
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import os
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import numpy as np
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logger = logging.getLogger('isce.insar.VerifyDEM')
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class INFO:
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def __init__(self, snwe):
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self.extremes = snwe
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def getExtremes(self, x):
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return self.extremes
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def runVerifyDEM(self):
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'''
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Make sure that a DEM is available for processing the given data.
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'''
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self.demStitcher.noFilling = False
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###If provided in the input XML file
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if self.demFilename not in ['',None]:
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demimg = isceobj.createDemImage()
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demimg.load(self.demFilename + '.xml')
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if not os.path.exists(self.demFilename + '.vrt'):
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demimg.renderVRT()
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if demimg.reference.upper() == 'EGM96':
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wgsdemname = self.demFilename + '.wgs84'
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if os.path.exists(wgsdemname) and os.path.exists(wgsdemname + '.xml'):
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demimg = isceobj.createDemImage()
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demimg.load(wgsdemname + '.xml')
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if demimg.reference.upper() == 'EGM96':
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raise Exception('WGS84 version of dem found by reference set to EGM96')
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else:
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demimg = self.demStitcher.correct(demimg)
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elif demimg.reference.upper() != 'WGS84':
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raise Exception('Unknown reference system for DEM: {0}'.format(demimg.reference))
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else:
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swathList = self._insar.getValidSwathList(self.swaths)
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bboxes = []
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for swath in swathList:
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if self._insar.numberOfCommonBursts[swath-1] > 0:
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reference = self._insar.loadProduct( os.path.join(self._insar.referenceSlcProduct, 'IW{0}.xml'.format(swath)))
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secondary = self._insar.loadProduct( os.path.join(self._insar.secondarySlcProduct, 'IW{0}.xml'.format(swath)))
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####Merges orbit as needed for multi-stitched frames
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mOrb = self._insar.getMergedOrbit([reference])
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sOrb = self._insar.getMergedOrbit([secondary])
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mbox = reference.getBbox()
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sbox = secondary.getBbox()
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####Union of bounding boxes
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bbox = [min(mbox[0], sbox[0]), max(mbox[1], sbox[1]),
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min(mbox[2], sbox[2]), max(mbox[3], sbox[3])]
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bboxes.append(bbox)
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if len(bboxes) == 0 :
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raise Exception('Something went wrong in determining bboxes')
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else:
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bbox = [min([x[0] for x in bboxes]),
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max([x[1] for x in bboxes]),
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min([x[2] for x in bboxes]),
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max([x[3] for x in bboxes])]
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####Truncate to integers
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tbox = [np.floor(bbox[0]), np.ceil(bbox[1]),
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np.floor(bbox[2]), np.ceil(bbox[3])]
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#EMG
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info = INFO(tbox)
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self.useZeroTiles = True
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DemImageLib.createDem(tbox, info, self, self.demStitcher,
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self.useHighResolutionDemOnly, self.useZeroTiles)
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# createDem puts the dem image in self. Put a reference in
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# local variable demimg to return the filename in the same
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# way as done in the "if" clause above
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demimg = self.demImage
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return demimg.filename
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