Hi,<br>I am trying to stitch together geotiff satellite images to obtain a world satellite picture.<br><br>I experience problems with the colors in the output image when
using gdal_merge.py. All the colors are fainted. I suspect this has
to do with the fact that the input images have ColorInterp=palette but
the palette has values:0,0,0,255 for all 256 elements. I have been
looking around to determine how I could use the the input images colors for
the output with no luck so far. If I use -pct
option with gdal_merge.py then my output image is all black. <br>I tried using gdalwarp but I obtained a black output image even if I try to just place one input image in the output. Since I am not familiar with GDAL or GIS area at all, I suspect I am not using gdalwarp correctly. I tried:
<br>gdalwarp input.tif output.tif<br>gdalwarp -s_srs 'ULx ULy LRx LRy' input.tif output.tif where the values enclosed in quotes are the gdalinfo UL and LR coordinates for input.tif.<br>gdalwarp -t_srs '+proj=equirectangular +datum=WGS84'
input.tif output.tif input image projection=equirectangular<br> <br>Is there any way to set the output color table that would give me an output image with same colors I have on input images?<br><br>Are there documentation websites I could use to learn more about the usage of the options to run gdal_merge.py or gdalwarp?
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