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Merge pull request #13 from leiyangleon/update_optical_reader_url_access
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update readers for optical data with gdal vsicurl access
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@leiyangleon
leiyangleon authored Oct 31, 2020
2 parents cf29918 + f4d98f6 commit f2beef5
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Showing 3 changed files with 379 additions and 45 deletions.
162 changes: 144 additions & 18 deletions geo_autoRIFT/geogrid/GeogridOptical.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,8 @@ def runGeogrid(self):
'''

##Determine appropriate EPSG system
self.epsgDem = self.getProjectionSystem(self.demname)
self.epsgDat = self.getProjectionSystem(self.dat1name)
self.epsgDem = self.getProjectionSystem(self.demname, self.urlflag)
self.epsgDat = self.getProjectionSystem(self.dat1name, self.urlflag)

###Determine extent of data needed
bbox = self.determineBbox()
Expand All @@ -59,15 +59,18 @@ def runGeogrid(self):
self.geogrid()


def getProjectionSystem(self, filename):
def getProjectionSystem(self, filename, urlflag):
'''
Testing with Greenland.
'''
if not filename:
raise Exception('File {0} does not exist'.format(filename))

from osgeo import gdal, osr
ds = gdal.Open(filename, gdal.GA_ReadOnly)
if urlflag is 1:
ds = gdal.Open('/vsicurl/%s' %(filename))
else:
ds = gdal.Open(filename, gdal.GA_ReadOnly)
srs = osr.SpatialReference()
srs.ImportFromWkt(ds.GetProjection())
srs.AutoIdentifyEPSG()
Expand All @@ -83,7 +86,10 @@ def getProjectionSystem(self, filename):
else:
raise Exception('Non-standard coordinate system encountered')
if not epsgstr: #Empty string->use shell command gdalsrsinfo for last trial
cmd = 'gdalsrsinfo -o epsg {0}'.format(filename)
if urlflag is 1:
cmd = 'gdalsrsinfo -o epsg /vsicurl/{0}'.format(filename)
else:
cmd = 'gdalsrsinfo -o epsg {0}'.format(filename)
epsgstr = subprocess.check_output(cmd, shell=True)
# pdb.set_trace()
epsgstr = re.findall("EPSG:(\d+)", str(epsgstr))[0]
Expand Down Expand Up @@ -154,6 +160,13 @@ def determineBbox(self, zrange=[-200,4000]):
def geogrid(self):

# For now print inputs that were obtained

urlflag = self.urlflag

if urlflag is 1:
print("\nReading input images into memory directly from URL's")
else:
print("\nReading input images locally from files")

print("\nOptical Image parameters: ")
print("X-direction coordinate: " + str(self.startingX) + " " + str(self.XSize))
Expand Down Expand Up @@ -218,30 +231,56 @@ def geogrid(self):
import struct

# pdb.set_trace()
demDS = gdal.Open(self.demname, gdal.GA_ReadOnly)
if urlflag is 1:
demDS = gdal.Open('/vsicurl/%s' %(self.demname))
else:
demDS = gdal.Open(self.demname, gdal.GA_ReadOnly)

if (self.dhdxname != ""):
sxDS = gdal.Open(self.dhdxname, gdal.GA_ReadOnly)
syDS = gdal.Open(self.dhdyname, gdal.GA_ReadOnly)
if urlflag is 1:
sxDS = gdal.Open('/vsicurl/%s' %(self.dhdxname))
syDS = gdal.Open('/vsicurl/%s' %(self.dhdyname))
else:
sxDS = gdal.Open(self.dhdxname, gdal.GA_ReadOnly)
syDS = gdal.Open(self.dhdyname, gdal.GA_ReadOnly)

if (self.vxname != ""):
vxDS = gdal.Open(self.vxname, gdal.GA_ReadOnly)
vyDS = gdal.Open(self.vyname, gdal.GA_ReadOnly)
if urlflag is 1:
vxDS = gdal.Open('/vsicurl/%s' %(self.vxname))
vyDS = gdal.Open('/vsicurl/%s' %(self.vyname))
else:
vxDS = gdal.Open(self.vxname, gdal.GA_ReadOnly)
vyDS = gdal.Open(self.vyname, gdal.GA_ReadOnly)

if (self.srxname != ""):
srxDS = gdal.Open(self.srxname, gdal.GA_ReadOnly)
sryDS = gdal.Open(self.sryname, gdal.GA_ReadOnly)
if urlflag is 1:
srxDS = gdal.Open('/vsicurl/%s' %(self.srxname))
sryDS = gdal.Open('/vsicurl/%s' %(self.sryname))
else:
srxDS = gdal.Open(self.srxname, gdal.GA_ReadOnly)
sryDS = gdal.Open(self.sryname, gdal.GA_ReadOnly)

if (self.csminxname != ""):
csminxDS = gdal.Open(self.csminxname, gdal.GA_ReadOnly)
csminyDS = gdal.Open(self.csminyname, gdal.GA_ReadOnly)
if urlflag is 1:
csminxDS = gdal.Open('/vsicurl/%s' %(self.csminxname))
csminyDS = gdal.Open('/vsicurl/%s' %(self.csminyname))
else:
csminxDS = gdal.Open(self.csminxname, gdal.GA_ReadOnly)
csminyDS = gdal.Open(self.csminyname, gdal.GA_ReadOnly)

if (self.csmaxxname != ""):
csmaxxDS = gdal.Open(self.csmaxxname, gdal.GA_ReadOnly)
csmaxyDS = gdal.Open(self.csmaxyname, gdal.GA_ReadOnly)
if urlflag is 1:
csmaxxDS = gdal.Open('/vsicurl/%s' %(self.csmaxxname))
csmaxyDS = gdal.Open('/vsicurl/%s' %(self.csmaxyname))
else:
csmaxxDS = gdal.Open(self.csmaxxname, gdal.GA_ReadOnly)
csmaxyDS = gdal.Open(self.csmaxyname, gdal.GA_ReadOnly)

if (self.ssmname != ""):
ssmDS = gdal.Open(self.ssmname, gdal.GA_ReadOnly)
if urlflag is 1:
ssmDS = gdal.Open('/vsicurl/%s' %(self.ssmname))
else:
ssmDS = gdal.Open(self.ssmname, gdal.GA_ReadOnly)

if demDS is None:
raise Exception('Error opening DEM file {0}'.format(self.demname))
Expand Down Expand Up @@ -731,8 +770,94 @@ def geogrid(self):



def coregister(self,in1,in2,urlflag):
import os
import numpy as np

from osgeo import gdal, osr
import struct

if urlflag is 1:
DS1 = gdal.Open('/vsicurl/%s' %(in1))
else:
DS1 = gdal.Open(in1, gdal.GA_ReadOnly)
trans1 = DS1.GetGeoTransform()
xsize1 = DS1.RasterXSize
ysize1 = DS1.RasterYSize

if urlflag is 1:
DS2 = gdal.Open('/vsicurl/%s' %(in2))
else:
DS2 = gdal.Open(in2, gdal.GA_ReadOnly)
trans2 = DS2.GetGeoTransform()
xsize2 = DS2.RasterXSize
ysize2 = DS2.RasterYSize

W = np.max([trans1[0],trans2[0]])
N = np.min([trans1[3],trans2[3]])
E = np.min([trans1[0]+xsize1*trans1[1],trans2[0]+xsize2*trans2[1]])
S = np.max([trans1[3]+ysize1*trans1[5],trans2[3]+ysize2*trans2[5]])

x1a = int(np.round((W-trans1[0])/trans1[1]))
x1b = int(np.round((E-trans1[0])/trans1[1]))
y1a = int(np.round((N-trans1[3])/trans1[5]))
y1b = int(np.round((S-trans1[3])/trans1[5]))

x2a = int(np.round((W-trans2[0])/trans2[1]))
x2b = int(np.round((E-trans2[0])/trans2[1]))
y2a = int(np.round((N-trans2[3])/trans2[5]))
y2b = int(np.round((S-trans2[3])/trans2[5]))

x1a = np.min([x1a, xsize1-1])
x1b = np.min([x1b, xsize1-1])
y1a = np.min([y1a, ysize1-1])
y1b = np.min([y1b, ysize1-1])
x2a = np.min([x2a, xsize2-1])
x2b = np.min([x2b, xsize2-1])
y2a = np.min([y2a, ysize2-1])
y2b = np.min([y2b, ysize2-1])

x1a = np.max([x1a, 0])
x1b = np.max([x1b, 0])
y1a = np.max([y1a, 0])
y1b = np.max([y1b, 0])
x2a = np.max([x2a, 0])
x2b = np.max([x2b, 0])
y2a = np.max([y2a, 0])
y2b = np.max([y2b, 0])

x1a = int(x1a)
x1b = int(x1b)
y1a = int(y1a)
y1b = int(y1b)
x2a = int(x2a)
x2b = int(x2b)
y2a = int(y2a)
y2b = int(y2b)

trans = (W, trans1[1], 0.0, N, 0.0, trans1[5])

if urlflag is 0:

I1 = DS1.ReadAsArray(xoff=x1a, yoff=y1a, xsize=x1b-x1a+1, ysize=y1b-y1a+1)
I2 = DS2.ReadAsArray(xoff=x2a, yoff=y2a, xsize=x2b-x2a+1, ysize=y2b-y2a+1)


fileformat = "GTiff"
driver = gdal.GetDriverByName(fileformat)

DST1 = driver.Create(os.path.basename(in1), xsize=(x1b-x1a+1), ysize=(y1b-y1a+1), bands=1, eType=gdal.GDT_UInt16)
DST1.SetGeoTransform(trans)
DST1.SetProjection(DS1.GetProjectionRef())
DST1.GetRasterBand(1).WriteArray(I1)
DST1 = None

DST2 = driver.Create(os.path.basename(in2), xsize=(x2b-x2a+1), ysize=(y2b-y2a+1), bands=1, eType=gdal.GDT_UInt16)
DST2.SetGeoTransform(trans)
DST2.SetProjection(DS2.GetProjectionRef())
DST2.GetRasterBand(1).WriteArray(I2)
DST2 = None

return x1a, y1a, x1b-x1a+1, y1b-y1a+1, x2a, y2a, x2b-x2a+1, y2b-y2a+1, trans



Expand All @@ -753,6 +878,7 @@ def __init__(self):
self.numberOfLines = None
self.repeatTime = None
self.chipSizeX0 = None
self.urlflag = None

##Input related parameters
self.dat1name = None
Expand Down
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