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Proceedings Paper

Interpolating DCT representation of digital video over time
Author(s): Haim Schweitzer; Yanjun Zhang
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Paper Abstract

Changing video frame rate may require adding new frames. This can be done by interpolating the given frames over time. We describe a very fast algorithm for time interpolation of DCT encoded video. Given a sequence of DCT encoded frames, the algorithm produces the interpolated sequence of DCT encoded frames without computing DCT or inverse DCT. The idea is to exploit a simple shift property of DCT coefficients that holds for frame triplets. It is somewhat analogous to the shift property of Fourier coefficients that holds for frame pairs.

Paper Details

Date Published: 23 March 1995
PDF: 8 pages
Proc. SPIE 2421, Image and Video Processing III, (23 March 1995); doi: 10.1117/12.205478
Show Author Affiliations
Haim Schweitzer, Univ. of Texas/Dallas (United States)
Yanjun Zhang, Southern Methodist Univ. (United States)

Published in SPIE Proceedings Vol. 2421:
Image and Video Processing III
Robert L. Stevenson; Sarah A. Rajala, Editor(s)

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