Differential coding of interpolation filters

Details Differential coding of interpolation filters Differential coding of interpolation filters

2008-05-27

2008-05-27

Lee, Young (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07379501

ABSTRACT:
A video coding system for coding a sequence of video frames each having an array of pixel values is provided. The system includes an interpolation filter to reconstruct sub-pixel values for use in the inter-frame prediction process. The coefficients of an interpolation filter are obtained differentially with respect to a predefined base filter in order to provide a set of difference values. As the base filter coefficients are known to both encoder and decoder and they are statistically close to the actual filters used in the video sequence, the decoder can reconstruct the pixel values based on the set of difference values.

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