Digital Scene Simulation: The Synergy of Computer Technology and Human Creativity
Article Abstract:
Digital Productions has combined a CRAY X-MP supercomputer, with sophisticated animation software, and creative people for Digital Scene Simulation that creates excellent computer-generated images. A scene goes from the artist's imagination, through the computer, onto film. Simulation can save money, enchance creativity, and contribute to new forms of entertainment. The heart of the facility is the CRAY X-MP-22300 dual CPU supercomputer, which is extremely fast and accurate. 144 minutes of film can be generated per year. A VAX 11-782 acts as a front-end station; an encoding workstation receives the architecturally designed object, and real-time vector display systems are used for previous objects and scene motion. Special front-end software provides user-friendly interfaces for the DP3D image rendering and simulation routines. Finally, the Digital Film Printer is an integrated system with two film scanners and a film recorder. Digital Productions hopes that, with advances in the field, the computer will be used as a creative tool by film directors. Several images created by the system are shown.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1984
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Estimating and interpreting the instantaneous frequency of a signal -- part 2: algorithms and applications
Article Abstract:
The concept of estimating instantaneous frequency (IF) is extended to cope with discrete time signals. The estimation of the IF of frequency modulated (FM) discrete-time signals embedded in Gaussian noise is examined. The well-established methods of estimating the IF include differentiation and smoothing of the phase, adaptive frequency estimation techniques, and extraction of the peak from time-varying spectral representations. New methods based on modeling the signal phase as a polynomial are reviewed and their performance is compared on simulated and real data. Guidelines for selecting an estimation method for a given signal class and signal-to-noise ratio (SNR) are presented.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1992
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Geometrical Aspects of Interpreting Images as a Three- Dimensional Scene
Article Abstract:
Fundamental aspects of vision include three-dimensional geometry referring to the relationship between the scene and the image. Vision refers to sensing and interpreting of environments by means of images. Successful applications of vision in robotics are limited. There is a difference in 2D image analysis and 3D scene description. It is important to achieve the capability of a 3D image analyzer to construct scene descriptions from images. A flow chart of a 3D system is included.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1983
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