25
Other variations
¬Microscopes,
telescopes, endoscopes, …
¬X-rays: radiation
passes through objects to sensor elements on
the other side
¬Fibers can carry image around curves; in bodies, in machine tools
¬Pressure arrays
create images (fingerprints, butts)
¬Sonar, stereo,
focus, etc can be used for range sensing (see
Chapters 12 and 13)