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Rational Zoom of Bit Maps Using B‐Spline Interpdation in Computerized 2‐D Animation
Author(s) -
Durand Charles X.,
Faguy Daniel
Publication year - 1990
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/j.1467-8659.1990.tb00372.x
Subject(s) - computer science , animation , zoom , computer graphics (images) , interpolation (computer graphics) , computation , computer animation , graphics , algorithm , engineering , lens (geology) , petroleum engineering
This paper describes the application of B‐spline interpolation to the problem of rational transformation in computerized 2‐D animation. The technique described herewith can also be applied to the resolution independence problem which arises when the same production workstation is used to produce animation series to be recorded on variable film sizes This article fully explains our solution to the problem of rational zoom. An algorithm has been written to speed up computations by spreading the computing load among similar technical workstations hooked up in a network. Large magnifications of professional quality can be achieved in very little time and very smooth animation effects can be obtained by applying rational zooms with magnification coefficients that are a time function.