Réalisation (audiovisuel)

Résumé

La réalisation d'un film est le processus de fabrication qui commence par une idée originale, parcourt les étapes de l'écriture du script, prépare le tournage au cours de la préproduction, mène à sa bonne fin le tournage proprement dit, puis assure le montage et la finition, appelés postproduction, et se termine par la distribution qui englobe toute la commercialisation de l'ouvrage. Elle implique un nombre de techniciens, d'artistes et de personnels administratifs qui va de quelques dizaines de personnes à quelques milliers. Elle peut s'étendre sur plusieurs semaines, le plus souvent plusieurs mois, voire quelques années. Déroulement de la réalisation Histoire La première étape de la réalisation d’un film a toujours été le sujet. Dans le cinéma primitif, dès 1891, ce sujet tenait en quelques mots qui devenaient bien souvent le titre du film (les premiers films avaient une durée inférieure à une minute). Ce n’était pas ce qui s’appelle aujourd’hui un court-métra

Source officielle

https://fr.wikipedia.org/wiki/R%C3%A9alisation_(audiovisuel)

À propos de ce résultat

Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.

Publications associées (2)

Publications associées

Chargement

Personnes associées

Chargement

Unités associées

Chargement

Concepts associés (30)

Concepts associés

Chargement

Cours associés (4)

Cours associés

Chargement

Séances de cours associées (4)

Séances de cours associées

Chargement

Enhanced discriminability for nonbiological motion violating the two-thirds power law

Olaf Blanke, Nathan Quentin Faivre, Roy Salomon, Laurène Véronique Vuillaume

The two-thirds power law describes the relationship between velocity and curvature in human motor movements. Interestingly, this motor law also affects visual motion perception, in which stimuli moving according to the two-thirds power law are perceived to have a constant velocity compared to stimuli actually moving at constant velocity. Thus, visual motion adhering to biological motion principles causes a kinematic illusion of smooth and velocity-invariant motion. However, it is yet unclear how this motion law affects the discrimination of visual stimuli and if its encoding requires attention. Here we tested the perceptual discrimination of stimuli following biological (two-thirds power law) or nonbiological movement under conditions in which the stimuli were degraded or masked through continuous flash suppression. Additionally, we tested subjective perception of naturalness and velocity consistency. Our results show that the discriminability of a visual target is inversely related to the perceived "naturalness" of its movement. Discrimination of stimuli following the two-thirds power law required more time than the same stimuli moving at constant velocity or nonecological variants of the two-thirds power law and was present for both masked and degraded stimuli.

Association for Research in Vision and Ophthalmology (ARVO)2016

Chargement

, , ,

We studied structural changes in a 5 unit cell thick La1.96Sr0.04CuO4 film, epitaxially grown on a LaSrAlO4 substrate with a single unit cell buffer layer, when ultra-high electric fields were induced in the film by applying a gate voltage between the film (ground) and an ionic liquid in contact with it. Measuring the diffraction intensity along the substrate-defined Bragg rods and analyzing the results using a phase retrieval method we obtained the three-dimensional electron density in the film, buffer layer, and topmost atomic layers of the substrate under different applied gate voltages. The main structural observations were: (i) there were no structural changes when the voltage was negative, holes were injected into the film making it more metallic and screening the electric field; (ii) when the voltage was positive, the film was depleted of holes becoming more insulating, the electric field extended throughout the film, the partial surface monolayer became disordered, and equatorial oxygen atoms were displaced towards the surface; (iii) the changes in surface disorder and the oxygen displacements were both reversed when a negative voltage was applied; and (iv) the c-axis lattice constant of the film did not change in spite of the displacement of equatorial oxygen atoms.

Nature Publishing Group2016

Chargement