$ calino extract-image-data-2d \
--file example-ctf \
--output-directory /tmp/out \
--output-format PNG
calino: INFO: writing level 7 to /tmp/out/m007.png
calino: INFO: writing level 6 to /tmp/out/m006.png
calino: INFO: writing level 5 to /tmp/out/m005.png
calino: INFO: writing level 4 to /tmp/out/m004.png
calino: INFO: writing level 3 to /tmp/out/m003.png
calino: INFO: writing level 2 to /tmp/out/m002.png
calino: INFO: writing level 1 to /tmp/out/m001.png
calino: INFO: writing level 0 to /tmp/out/m000.png
