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US 2003/0126169 A1Published application
Progressive two-dimensional (2D) pyramid filter
AssigneeIntel Corporation
InventorsWen-Shan Wang, Tinku Acharya
Life of this patent
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Abstract
Embodiments of a progressive 2D pyramid filter bank are disclosed.
Claims20
A method of implementing a pyramid filter bank comprising:
- first adding a first and a last input signal sample to a sum of input samples of a next lower-tap filter of a current filter to produce a sum of input signal samples for the current filter;
- and
- second adding the sum of input signal samples for the current filter to an output signal sample of the next lower-tap filter of the current filter to produce an output signal sample for the current filter.
An article comprising:
- a storage medium, said storage medium having stored thereon instructions, that, when executed result in:
- first adding a first and a last input signal sample to a sum of input samples of a next lower-tap filter of a current filter to produce a sum of input signal samples for the current filter;
- and second adding the sum of input signal samples for the current filter to an output signal sample of the next lower-tap filter of the current filter to produce an output signal sample for the current filter.
An integrated circuit comprising:
- digital logic circuit components coupled so that, during operation,
- a first and a last input signal sample are added to a sum of input samples of a next lower-tap filter of a current filter to produce a sum of input signal samples for the current filter and so that the sum of input signal samples for the current filter are added to an output signal sample of the next lower-tap filter of the current filter to produce a n output signal sample for the current filter.
Dependencies are inferred from the claim text.