Does anyone have a method for extracting pixels from a GeoTIFF that are of a particular value. So for example if a band had values from 0 to 10 and I wanted to make an image just using the zero values and to leave the other pixel values as unknown.
My GeoTIFF is 19 GB large so I'd prefer to avoid using QGIS. I've already tried GRASS and it would freeze on me. I would prefer a solution that can use the GDAL tools but Python would be good too.
My eventual goal is to extract the polygons that surround regions of interest using the monochrome image generated from the above.