I'm looking for a way to display a large GeoTIFF or MrSID in JOSM as a TMS or WMS layer, but am running into a scaling issue with my normal method. I received a 9 GB MrSID file from the city which turns into a 166 GB GeoTIFF, covering a large area at a 10cm resolution.
My normal method for imagery like this that I intend to use frequently would be to use gdal2tiles to turn it into a slippy map, but when I started running it I ran into an issue. I've done the exact same area before, but at 40cm resolution and that took a week. I quickly found out that 10cm resolution not only has 16 times the tiles, the tiles take longer for each one, leading to an estimated runtime of approximately a year. gdal2tiles isn't fast, and I could speed it up by throwing more CPU power at it, but not with the scaling problem. My second method for imagery is to use mapserver to serve it up as a WMS layer. That didn't work, mapserver never responded when trying to handle such a large file. I think it just took too long to process anything with it. Does anyone have any suggestions for alternative methods that will work better for large files? Ideally I'd like to do a tms slippymap but I'm open to anything
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