[gdal-dev] Combining quantized png files in gdal2tiles

[Phil Scadden]

Okay, but how is the best way to fix it? Since pnqnq runs on individual 
tiles, I would not expect tiles to have the same palette.

What is needed is to read the nq tiles into memory, convert to RGBA 
raster, then put that into overview tile. How tricky is this to do? Any 
pointers into the API that would help me.

Thanks

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