def multilook(infile,
outname=None,
alks=5,
rlks=15,
multilook_tool="isce",
no_data=None):
'''
Take looks.
'''
if multilook_tool == "gdal":
from osgeo import gdal
print("multi looking using gdal ...")
if outname is None:
spl = os.path.splitext(infile)
ext = '.{0}alks_{1}rlks'.format(alks, rlks)
outname = spl[0] + ext + spl[1]
print(infile)
ds = gdal.Open(infile + ".vrt", gdal.GA_ReadOnly)
xSize = ds.RasterXSize
ySize = ds.RasterYSize
outXSize = xSize / int(rlks)
outYSize = ySize / int(alks)
if no_data:
gdalTranslateOpts = gdal.TranslateOptions(format="ENVI",
width=outXSize,
height=outYSize,
noData=no_data)
else:
gdalTranslateOpts = gdal.TranslateOptions(format="ENVI",
width=outXSize,
height=outYSize)
gdal.Translate(outname, ds, options=gdalTranslateOpts)
ds = None
ds = gdal.Open(outname, gdal.GA_ReadOnly)
gdal.Translate(outname + ".vrt",
ds,
options=gdal.TranslateOptions(format="VRT"))
ds = None
else:
from mroipac.looks.Looks import Looks
print('Multilooking {0} ...'.format(infile))
inimg = isceobj.createImage()
inimg.load(infile + '.xml')
if outname is None:
spl = os.path.splitext(inimg.filename)
ext = '.{0}alks_{1}rlks'.format(alks, rlks)
outname = spl[0] + ext + spl[1]
lkObj = Looks()
lkObj.setDownLooks(alks)
lkObj.setAcrossLooks(rlks)
lkObj.setInputImage(inimg)
lkObj.setOutputFilename(outname)
lkObj.looks()
return outname
def runMultilook(in_dir,
out_dir,
alks,
rlks,
in_ext='.rdr',
out_ext='.rdr',
method='gdal',
fbase_list=[
'hgt', 'incLocal', 'lat', 'lon', 'los', 'shadowMask',
'waterMask'
]):
"""
Multilook geometry files.
"""
from iscesys.Parsers.FileParserFactory import createFileParser
from mroipac.looks.Looks import Looks
msg = 'generate multilooked geometry files with alks={} and rlks={}'.format(
alks, rlks)
if method == 'isce':
msg += ' using mroipac.looks.Looks() ...'
else:
msg += ' using gdal.Translate() ...'
print('-' * 50 + '\n' + msg)
# create 'geom_reference' directory
os.makedirs(out_dir, exist_ok=True)
# multilook files one by one
for fbase in fbase_list:
in_file = os.path.join(in_dir, '{}{}'.format(fbase, in_ext))
out_file = os.path.join(out_dir, '{}{}'.format(fbase, out_ext))
if all(os.path.isfile(in_file + ext) for ext in ['', '.vrt', '.xml']):
print('multilook {}'.format(in_file))
# option 1 - Looks module (isce)
if method == 'isce':
xmlProp = createFileParser('xml').parse(in_file + '.xml')[0]
if ('image_type' in xmlProp
and xmlProp['image_type'] == 'dem'):
inImage = isceobj.createDemImage()
else:
inImage = isceobj.createImage()
inImage.load(in_file + '.xml')
inImage.filename = in_file
lkObj = Looks()
lkObj.setDownLooks(alks)
lkObj.setAcrossLooks(rlks)
lkObj.setInputImage(inImage)
lkObj.setOutputFilename(out_file)
lkObj.looks()
# option 2 - gdal_translate (gdal)
elif method == 'gdal':
ds = gdal.Open(in_file, gdal.GA_ReadOnly)
in_wid = ds.RasterXSize
in_len = ds.RasterYSize
out_wid = int(in_wid / rlks)
out_len = int(in_len / alks)
src_wid = out_wid * rlks
src_len = out_len * alks
options_str = '-of ENVI -a_nodata 0 -outsize {ox} {oy} -srcwin 0 0 {sx} {sy} '.format(
ox=out_wid, oy=out_len, sx=src_wid, sy=src_len)
gdal.Translate(out_file, ds, options=options_str)
# generate ISCE .xml file
if not os.path.isfile(out_file + '.xml'):
cmd = 'gdal2isce_xml.py -i {}.vrt'.format(out_file)
print(cmd)
os.system(cmd)
else:
raise ValueError(
'un-supported multilook method: {}'.format(method))
# copy the full resolution xml/vrt file from ./merged/geom_reference to ./geom_reference
# to facilitate the number of looks extraction
# the file path inside .xml file is not, but should, updated
if in_file != out_file + '.full':
shutil.copy(in_file + '.xml', out_file + '.full.xml')
shutil.copy(in_file + '.vrt', out_file + '.full.vrt')
return out_dir
def runLook(self):
'''take looks
'''
catalog = isceobj.Catalog.createCatalog(self._insar.procDoc.name)
self.updateParamemetersFromUser()
#referenceTrack = self._insar.loadTrack(reference=True)
#secondaryTrack = self._insar.loadTrack(reference=False)
wbdFile = os.path.abspath(self._insar.wbd)
insarDir = 'insar'
os.makedirs(insarDir, exist_ok=True)
os.chdir(insarDir)
amp = isceobj.createImage()
amp.load(self._insar.amplitude + '.xml')
width = amp.width
length = amp.length
width2 = int(width / self._insar.numberRangeLooks2)
length2 = int(length / self._insar.numberAzimuthLooks2)
if not ((self._insar.numberRangeLooks2 == 1) and
(self._insar.numberAzimuthLooks2 == 1)):
#take looks
look(self._insar.differentialInterferogram,
self._insar.multilookDifferentialInterferogram, width,
self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 4,
0, 1)
look(self._insar.amplitude, self._insar.multilookAmplitude, width,
self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 4,
1, 1)
look(self._insar.latitude, self._insar.multilookLatitude, width,
self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 3,
0, 1)
look(self._insar.longitude, self._insar.multilookLongitude, width,
self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 3,
0, 1)
look(self._insar.height, self._insar.multilookHeight, width,
self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 3,
0, 1)
#creat xml
create_xml(self._insar.multilookDifferentialInterferogram, width2,
length2, 'int')
create_xml(self._insar.multilookAmplitude, width2, length2, 'amp')
create_xml(self._insar.multilookLatitude, width2, length2, 'double')
create_xml(self._insar.multilookLongitude, width2, length2, 'double')
create_xml(self._insar.multilookHeight, width2, length2, 'double')
#los has two bands, use look program in isce instead
#cmd = "looks.py -i {} -o {} -r {} -a {}".format(self._insar.los, self._insar.multilookLos, self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2)
#runCmd(cmd)
#replace the above system call with function call
from mroipac.looks.Looks import Looks
from isceobj.Image import createImage
inImage = createImage()
inImage.load(self._insar.los + '.xml')
lkObj = Looks()
lkObj.setDownLooks(self._insar.numberAzimuthLooks2)
lkObj.setAcrossLooks(self._insar.numberRangeLooks2)
lkObj.setInputImage(inImage)
lkObj.setOutputFilename(self._insar.multilookLos)
lkObj.looks()
#water body
#this looking operation has no problems where there is only water and land, but there is also possible no-data area
#look(self._insar.wbdOut, self._insar.multilookWbdOut, width, self._insar.numberRangeLooks2, self._insar.numberAzimuthLooks2, 0, 0, 1)
#create_xml(self._insar.multilookWbdOut, width2, length2, 'byte')
#use waterBodyRadar instead to avoid the problems of no-data pixels in water body
waterBodyRadar(self._insar.multilookLatitude,
self._insar.multilookLongitude, wbdFile,
self._insar.multilookWbdOut)
os.chdir('../')
catalog.printToLog(logger, "runLook")
self._insar.procDoc.addAllFromCatalog(catalog)