Search of similar features representing objects in a large...

Image analysis – Image transformation or preprocessing – Image storage or retrieval

Reexamination Certificate

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C707S793000

Reexamination Certificate

active

07400784

ABSTRACT:
This invention is a method dedicated to pseudo-invariant features retrieval and, more particularly, applied to content-based copy identification. The range of a query is computed during the search according to deviation statistics between original and observed features. This approximate search range is directly mapped onto a Hilbert's space-filling curve allowing an efficient access to the database. Such a method is sublinear in database size and does not suffer from dimensionality problems.

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patent: 7167856 (2007-01-01), Lawder

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