System of master reconstruction schemes for pyramid decomposition
AssigneeFastVDO LLC
InventorsTrac D. Tran, Lijie Liu, Pankaj N. Topiwala
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Abstract
A reconstruction system for digital signals processed by the laplacian pyramid including a master lifting-based parameterization reconstruction scheme. The system also involves the design of low-complexity FIR linear-phase integer-coefficient filtering operators for lapacian pyramid decimation and interpolation stages that deliver a minimum mean-squared error reconstruction.
Claims26
An optimal laplacian pyramid processing system for processing digital signal elements selected from a set of dimensions within a signal, comprising:
- a laplacian pyramid decomposition stage, including
- a decimation having a signal as an input and a coarse approximation of the signal as an output, and
- an interpolation having the coarse approximation as an input and a detail signal as an output;
- an intermediate stage;
- and
- a laplacian pyramid reconstruction stage having the coarse approximation and detail signal as inputs, and a reconstructed signal as an output,
- wherein the decimation retains maximum energy in the coarse approximation and the reconstructed signal is simultaneously a minimum mean square error approximation of the original signal.
An enhanced reconstruction laplacian pyramid processing system for processing a plurality digital signal elements selected from any set of dimensions within at least one signal, comprising:
- a laplacian pyramid decomposition stage, including
- a decimation having a signal as an input and a coarse approximation of the signal as an output, and
- an interpolation having the coarse approximation as an input and a detail signal as an output;
- an intermediate stage;
- a laplacian pyramid reconstruction stage having the coarse approximation and detail signal as inputs, and a reconstructed signal as an output;
- and
- an enhanced reconstruction stage having the coarse approximation and reconstructed signal as inputs, and an enhanced reconstructed signal as output.
Dependencies are inferred from the claim text.