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Screen‐Space Constraints for Camera Movements: the Virtual Cameraman
Author(s) -
Jardillier Frank,
Languénou Eric
Publication year - 1998
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.00265
Subject(s) - computer graphics (images) , computer science , space (punctuation) , computer vision , virtual reality , virtual space , artificial intelligence , human–computer interaction , operating system
This article presents a virtual cameraman which allows us to obtain the whole set of camera movements satisfying user defined constraints specified in the image space and/or constraints on the objects of the scene. This research follows the "Declarative Modelling" approach, which focuses on a 3‐phase modeller concept: description; generation; result exploration. Our tool is based on a solver using interval arithmetic. The time dimension is treated as another variable, thus constraints can be specified for the total duration of the animation or could last only for a given amount of time. There is no keyframing and no interpolation, thereby, for the solutions obtained, the satisfaction of the specified constraints are guaranteed. Several ways to include time dimension efficiently are discussed. We claim that the method is simple enough to be implemented easily without the need of any external solver.