I have very high resolution image of vast area(true color RGB bands). I am planning to to reduce the image size by reducing it to 16 bits (or less). which image format is best for performance point of view. finally to narrow down more my question shall i use mbtiles or tiff or mrsid or any other format/ method you like to suggest ?
asked Oct 13, 2015 at 9:35
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4Have you read the raster sections of the GeoServer on steroids presentation slideshare.net/geosolutions/gs-steroids-foss4ge2014?– user30184Oct 13, 2015 at 9:38
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2 Answers
What ever the format, the raster tiles can be loaded faster using the GeoWebCache, where all the tiles has been pre generated and the tiles can be loaded directly without generating it for each request.
GeoWebCache is integrated with geoserver no additional component is required.
check out this link GeoWebCache for integrating this with geoserver
The most preferable format is geotiff
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i will be using geowebcache by default. can you state reason why geotiff is preferable ? as if I use mrsid i will save lots of space as compared to geotiff . so will it make difference if i use mrsid rather than geotiff ? Oct 13, 2015 at 13:49
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GeoTIFF with JPEG compression is no bigger than MrSID but if you will finally use tiles then just use whatever you want as originals. When you seeded the cache you can even remove the originals from your server. Oct 13, 2015 at 17:22
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Rather than format the memory is mainly depends on the number of zoom levels or resolutions you used in the application and by selecting suitable tile size for your application. Oct 15, 2015 at 5:27
The best Format is mbtiles . I used tilemill to make mbtiles (note tile mill only accepts 3857) The final size of image was 16 GB . Using Tile server it was very easy to make WMTS out of it . Which was almost 20 times faster than geoserver wms . (note geoserver is ImageMosaic ,GeoTIFF are ok when the image size is less than 2 GB)
answered Mar 14, 2016 at 8:56