information:filtering, information:extraction, information:classification
Basics of holography

Holography is a technique for recording and reconstructing light fields. A light field is generally the result of a light source scattered off objects. Holography can be thought of as somewhat similar to sound recording, whereby a sound field created by vibrating matter like musical instruments or vocal cords, is encoded in such a way that it can be reproduced later, without the presence of the original vibrating matter. However, it is even more similar to Ambisonic sound recording in which any listening angle of a sound field can be reproduced in the reproduction.