Pseudo-color coding methods in the rainbow holography

On the basis of the principle of three basic colors, the two commonly used pseudo-color coding methods, i.e. multi-slit pseudo-color coding method and the reference beam pseudo-color method, in the rainbow holography were analyzed. The record key diagrams of multi-slit (three slits were designed in the paper) and reference beam pseudo-color holograms were given. The reconstruction block diagrams were also shown. The optimal slit width was designed. Using the above methods, high quality pseudo-color rainbow holograms can be obtained.