Method and apparatus for controlling access to selected image components in an image storage and retrieval system

Methode und Vorrichtung zur Zugangskontrolle zu ausgewählten Bildkomponenten in einem Bildspeicher und Bildwiedergewinnungssystem

Procédé et appareil pour contrôler l'accès aux composantes d'image sélectionnées dans un système d'enregistrement et d'extraction d'image

Abstract

An image processing technique is described in the context of a hierarchical image storage and retrieval system. The method allows for the restriction of access to selected high resolution image components in the hierarchy from unauthorized use. The technique employs a key encryption of selected image components during storage, and decryption with a special key, or password during authorized retrieval. This technique allows users of a distributed system the convenience of providing the entire image hierarchy on a single storage medium. Access to the low resolution components is permitted without restriction for browsing and proofing.

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