I have a 500MB GeoTIFF with 3 bands on disk. I can easily read a very small, 25x25-pixel subwindow using GDAL like so:
gdal_translate -srcwin 600 550 25 25 hugeimage.tif smallwindow.tifDoes this operation have to read the entire large GeoTIFF into memory, or is it able to seek to the appropriate bytes on disk and read only them?
Does the answer change for selecting individual bands, instead of clipping pixels?
Does the answer change if the GeoTIFF is compressed?
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gdal_translate -srcwin 600 550 25 25 hugeimage.tif smallwindow.tifDoes this operation have to read the entire large GeoTIFF into memory, or is it able to seek to the appropriate bytes on disk and read only them?
Does the answer change for selecting individual bands, instead of clipping pixels?
Does the answer change if the GeoTIFF is compressed?
أكثر...