Hello,
when i load in OpenEV the same image ( Landat GEOCOVER ) in ECW or in Geo=
Tiff
i have do not the same result : colors are very different between the two=
files.
I have attached a screenshot, tiff is on the left, ecw on the right.
Note that OpenEV is the only software which give these colors with the EC=
W file.
If i display
this image in ERviewer for example, i get the same colors than OpenEV wit=
h the
GeoTiff.
The ECW is obtained via :
gdal_translate IM.TIF IM.ECW -of ECW -co "TARGET=3D70"
Does OpenEV apply some particular processing on ECW images ?
On this particular dataset, I prefer the aspect of the ECW in OpeneEV and=
would
like to
apply the same processing outside OpenEV.
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Here are the gdalinfo about the two images :
TIFF :
Driver: GTiff/GeoTIFF
Size is 10741, 9809
Coordinate System is:
PROJCS["WGS 84 / UTM zone 30N",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.2572235630016,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0],
UNIT["radian",1],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-0.0009138522593601259],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AUTHORITY["EPSG","32630"]]
Origin =3D (193871.250000,4985875.500000)
Pixel Size =3D (57.00000000,-57.00000000)
Metadata:
TIFFTAG_XRESOLUTION=3D1
TIFFTAG_YRESOLUTION=3D1
TIFFTAG_RESOLUTIONUNIT=3D1 (unitless)
Corner Coordinates:
Upper Left ( 193871.250, 4985875.500) ( 0d 4'7.17"W, 0d47'4.94"N)
Lower Left ( 193871.250, 4426762.500) ( 0d 3'48.39"W, 0d41'49.23"N)
Upper Right ( 806108.250, 4985875.500) ( 0d 4'0.57"E, 0d47'4.94"N)
Lower Right ( 806108.250, 4426762.500) ( 0d 3'41.79"E, 0d41'49.23"N)
Center ( 499989.750, 4706319.000) ( 0d 0'3.30"W, 0d44'30.93"N)
Band 1 Block=3D10741x1 Type=3DByte, ColorInterp=3DRed
Band 2 Block=3D10741x1 Type=3DByte, ColorInterp=3DGreen
Band 3 Block=3D10741x1 Type=3DByte, ColorInterp=3DBlue
______________________________________________________________
ECW :
Driver: ECW/ERMapper Compressed Wavelets
Size is 10741, 9809
Coordinate System is:
PROJCS["UTM Zone 30, Northern Hemisphere",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9108"]],
AXIS["Lat",NORTH],
AXIS["Long",EAST],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-3],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["Meter",1]]
Origin =3D (193871.250000,4985875.500000)
Pixel Size =3D (57.00000000,-57.00000000)
Corner Coordinates:
Upper Left ( 193871.250, 4985875.500) ( 6d52'53.20"W, 44d57'37.16"N)
Lower Left ( 193871.250, 4426762.500) ( 6d34'57.22"W, 39d56'8.32"N)
Upper Right ( 806108.250, 4985875.500) ( 0d52'52.26"E, 44d57'37.19"N)
Lower Right ( 806108.250, 4426762.500) ( 0d34'56.36"E, 39d56'8.35"N)
Center ( 499989.750, 4706319.000) ( 3d 0'0.45"W, 42d30'33.26"N)
Band 1 Block=3D10741x1 Type=3DByte, ColorInterp=3DUndefined
Overviews: arbitrary
Band 2 Block=3D10741x1 Type=3DByte, ColorInterp=3DUndefined
Overviews: arbitrary
Band 3 Block=3D10741x1 Type=3DByte, ColorInterp=3DUndefined
Overviews: arbitrary
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Fr=E9d=E9ric Trastour - SpacEyes - dev@...
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