The Pulfrich Effect: When Visual Delay Creates Depth
The Pulfrich effect requires neither two cameras nor two recorded perspectives. The impression of depth arises when dimming the image for one eye delays its processing while the observed obj...
Spatial imaging knowledge
Technologia 3D
Portal publications about the history of stereoscopy, 3D techniques, photography, film, optics, lenticular and modern spatial technologies.
4 articles
Polarization in 3D Cinema: A Separate Image for Each Eye
In polarization-based cinema, the two views of a stereo pair can occupy the same screen because they differ in the polarization state of the light. The appropriate filters in the glasses dir...
The Birth of the Anaglyph: Rollmann, d’Almeida and Ducos du Hauron
The anaglyph did not immediately appear in the form of a red–cyan image and paper glasses. Its development involved at least three distinct stages: experiments with color separation of views...
Holography: Why a Hologram Is Not an Ordinary 3D Image
Classical stereoscopy provides the observer with prepared views, while holography records the information needed to reconstruct a light wave. We explain the roles of phase, interference, dif...