I did a search for something like that, needed a hologram for a project.
i have found out that the word “hologram” is a erroneous name for what i was looking for: that being a stereoscopic 3d image, mid-air floating projection.
apparently that is rather impossible without the use of some special eye-wear, (different kinds for different techniques). this ruled the stereoscopy out of my possibilities.
nonetheless kept searching, and found about this british company.. MUSION http://www.musion.co.uk/ they have developed and updated a very antique visual illusion called “Pepper’s Ghost” (this is the magic trick responsible for the phrase “it’s all done with mirrors").
basically it is a 45° angled glass or film, that that reflects images projected to a surface that the audience cant see.. making a see-thru projection that seems to be floating on mid-air..
so far we have solved the mid-air floating projection.
we can project a video or animation into that.
to get the volume 3D illusion it works best if the object projected is rotating over its vertical axis. maybe some post production effects some DOF some sporadic blur..
to improve it you could make the objects illumination in the video projection match that of the real illumination in the room where the illusion is being presented.
and there you go, a fairly decent, technically possible, economic, “hologram"… or at least that is how MUSION markets it.