78 lines
3.4 KiB
Python
78 lines
3.4 KiB
Python
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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: Brett George
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#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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import logging
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import isceobj
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logger = logging.getLogger('isce.insar.runOffoutliers')
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def runOffoutliers(self, distance, errorLimit=100):
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#offoutliers returns a list of modified locations
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#the list of lists is
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#list[0] = location across
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#list[1] = location across offset
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#list[2] = location down
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#list[3] = location down offset
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#list[4] = snr
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#list[5] = sig
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logger.info('Error limit = %d'%(errorLimit))
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warnLimit = errorLimit*3
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logger.info("Culling offset field outliers")
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rgOffsets = self._insar.getRefinedOffsetField()
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logger.info('Number of input offsets: %d'%(len(rgOffsets._offsets)))
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logger.info('Distance: %f'%(distance))
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objOff = isceobj.createOffoutliers()
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objOff.wireInputPort(name='offsets', object=rgOffsets)
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objOff.setSNRThreshold(2.0)
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objOff.setDistance(distance)
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#set the tag used in the outfile. each message is precided by this tag
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#is the writer is not of "file" type the call has no effect
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self._stdWriter.setFileTag("offoutliers", "log")
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self._stdWriter.setFileTag("offoutliers", "err")
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self._stdWriter.setFileTag("offoutliers", "out")
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objOff.setStdWriter(self._stdWriter)
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objOff.offoutliers()
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# Record the inputs and outputs
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from isceobj.Catalog import recordInputsAndOutputs
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recordInputsAndOutputs(self._insar.procDoc, objOff, "runOffoutliers",
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logger, "runOffoutliers")
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refinedOffsets = objOff.getRefinedOffsetField()
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lenOut = len(refinedOffsets._offsets)
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logger.info('Number of offsets left after culling: %d'%(lenOut))
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if lenOut < errorLimit:
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logger.error('Small number of output Offsets after culling: %d .\n Increase number of windows (or) window sizes (or) provide gross offset manually.'%(lenOut))
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raise Exception('Offset estimation Failed.')
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elif lenOut < warnLimit:
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logger.warn('Number of output offsets after culling are low: %d. Might be ok to continue.'%(lenOut))
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self._insar.setRefinedOffsetField(refinedOffsets)
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