INTER[SECTIONS]. A Conference on Architecture, City and Cinema Conference Proceedings. Porto, September 11-13, 2013
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Figure 1. Illustration of metempsychosis effect at Cabaret du néant in Paris, appeared in Scientific American th
magazine, March 7 1896.
3. Spatial Stratification Based on the former experiences, a heterogeneous body of FX techniques is dedicated to the creation of stratified spaces. In Matte effects, an actor o a whole scene is located in front of a painted curtain or a rear-projected screen, or more recently, a blue or green surface that will be later substituted by another scene. Perception can be understood as an act of selection of information after the innumerable stimuli that humans face constantly. Spatial stratification techniques precisely replicate such process, where certain elements are extracted from a certain scenario, then pasted onto another set of elements belonging to a different context, displacing them spatially and temporally.
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Figure 2. Stage operations for a Schüfftan effect with final composite. Fielding, Raymond (1985). The Technique of Special Effects Cinematography. Abingdon UK: Focal Press, p. 78
Clarke process (1940) and Schüfftan process (1923) are other techniques still in use that are not produced in postproduction but behind the camera, like stage magic artifacts. Clarke process composited clouds directly into the live action scenes, contributing to its
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