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Issue No.04 - April (1986 vol.6)
pp: 43-50
N. Magnenat-Thalmann , University of Montreal
ABSTRACT
The term "virtual camera" is often used in computer graphics, but it usually represents a mere abstraction for labeling the projection mechanism from 2D to 3D. We believe that a virtual camera should be a software entity that can be manipulated in the same way as cameramen manipulate real cameras. This article presents a model of a virtual movie camera and describes typical effects used by cameramen, including panning, tilting, tracking, zooming and spinning. Matte effects are introduced using an actorbased polygonal clipping method, and practical examples of such multiple-image effects as fades and wipes are presented.
INDEX TERMS
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CITATION
N. Magnenat-Thalmann, "Special Cinematographic Effects with Virtual Movie Cameras", IEEE Computer Graphics and Applications, vol.6, no. 4, pp. 43-50, April 1986, doi:10.1109/MCG.1986.276719
REFERENCES
1. N.Magnenat-Thalmann and D.Thalmann, Computer Animation: Theory and Practice , Springer-Verlag 1985
2. M.Potmesil and I.Chakravarty, "Synthetic Image Generation with a Lens and Aperture Camera Model," ACM Trans. Graphics Vol. 1, No. 2, pp. 85-108 April 1982
3. R.D.Bergeron, P.R.Bono, and J.D.Foley, "Graphics Programming Using the Core System," ACM Computing Surveys Vol. 10, No. 4, pp. 389-443 Dec. 1978
4. N.Magnenat-Thalmann, D.Thalmann, and M.Fortin, "MIRANIM: An Extensible Director-Oriented System for the Animation of Realistic Images," IEEE CG&A Vol. 5, No. 3, pp. 61-73 1985
5. R.M.Baecker, "Picture-Driven Animation," Proc. Spring Joint Computer Conf. 1969 Vol. 34, pp. 273-288 AFIPS Press
6. B.A.Barsky, "A Description and Evaluation of Various 3D Models," IEEE CG&A Vol. 4, No. 1, pp. 38-52 Jan. 1984
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8. D.H.Kochanek and R.H.Bartels, "Interpolating Splines with Local Tension, Continuity and Bias Control," Computer Graphics (Proc. SIGGRAPH 84) July 1984 Vol. 18, No. 3, pp. 33-41
9. N.Magnenat-Thalmann and D.Thalmann, "3D Computer Animation: More an Evolution Problem than a Motion Problem," IEEE CG&A Vol. 5, No. 10, pp. 47-57 Oct. 1985
10. N.Magnenat-Thalmann and D.Thalmann, Computer-Generated Images , Springer Verlag 1985pp. 249-259
11. C.W.Reynolds, "Computer Animation with Scripts and Actors," Computer Graphics (Proc. SIGGRAPH 82) July 1982 Vol. 16, No. 3, pp. 289-296
12. S.P.Mudur and J.H.Syngh, "A Notation for Computer Animation," IEEE Trans. Systems, Man and Cybernetics Vol. SMC-8, No. 4, pp. 308-311
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