Patent · US Active

Adaptive weighted-local-difference order statistics filters

US9208545B2 · kind B2 · utility

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5Claims

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Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Hrushikesh Tukaram Garud · Jamkhed, IN
Debdoot Sheet · Rajpura, IN
Ajoy Kumar Ray · Rajpura, IN
Manjunatha Mahadevappa · Narayanpur, IN
Jyotirmoy Chatterjee · Narayanpur, IN

Key dates

Filing date	Sep 20, 2013
Grant date	Dec 8, 2015
Priority date	—
Expiry date	Dec 5, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/20076
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A novel modification to the order statistics filters called the Adaptive Weighted-Local-Difference Order Statistics is shown that will act as a generic framework for the design of adaptive filters suitable for specific signal processing applications. To demonstrate the design of filters using this framework two implementations were defined and evaluated: Edge Orientation Adaptive Weighted-Local-Difference Median Filter (EOAWLDMF) and Luminance-Similarity Adaptive Weighted-Local-Difference Median Filter (LSAWLDMF) for restoration of noisy images.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.