[gdal-dev] Use of gdalwarp to make GeoTiff transparent is flipping the image

[Liglio]

Driver: GTiff/GeoTIFF
Files: E:\Images\image.tif
Size is 982, 1108
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","4326"]]
Origin = (-58.449520100000001,-34.571399100000001)
Pixel Size = (0.020016536493374,0.020014199367660)
Metadata:
  AREA_OR_POINT=Area
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  ( -58.4495201, -34.5713991) ( 58d26'58.27"W, 34d34'17.04"S)
Lower Left  ( -58.4495201, -12.3956662) ( 58d26'58.27"W, 12d23'44.40"S)
Upper Right ( -38.7932813, -34.5713991) ( 38d47'35.81"W, 34d34'17.04"S)
Lower Right ( -38.7932813, -12.3956662) ( 38d47'35.81"W, 12d23'44.40"S)
Center      ( -48.6214007, -23.4835327) ( 48d37'17.04"W, 23d29' 0.72"S)
Band 1 Block=982x2 Type=Byte, ColorInterp=Red
Band 2 Block=982x2 Type=Byte, ColorInterp=Green
Band 3 Block=982x2 Type=Byte, ColorInterp=Blue

-------------------------------------------------------------------------------------------------------
Driver: GTiff/GeoTIFF
Files: E:\Images\transp_image.tif
Size is 982, 1108
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","4326"]]
Origin = (-58.449520100000001,-12.395666200632341)
Pixel Size = (0.020015227575895,-0.020015227575895)
Metadata:
  AREA_OR_POINT=Area
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  ( -58.4495201, -12.3956662) ( 58d26'58.27"W, 12d23'44.40"S)
Lower Left  ( -58.4495201, -34.5725384) ( 58d26'58.27"W, 34d34'21.14"S)
Upper Right ( -38.7945666, -12.3956662) ( 38d47'40.44"W, 12d23'44.40"S)
Lower Right ( -38.7945666, -34.5725384) ( 38d47'40.44"W, 34d34'21.14"S)
Center      ( -48.6220434, -23.4841023) ( 48d37'19.36"W, 23d29' 2.77"S)
Band 1 Block=982x2 Type=Byte, ColorInterp=Red
  NoData Value=0
Band 2 Block=982x2 Type=Byte, ColorInterp=Green
  NoData Value=0
Band 3 Block=982x2 Type=Byte, ColorInterp=Blue
  NoData Value=0
Band 4 Block=982x2 Type=Byte, ColorInterp=Alpha
  NoData Value=0





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