System and method for mapping a surface

US6744932B1 · kind B1 · utility

Assignee

• Ora Metrix, Inc. · US

Inventors

• Rudger Rubbert · Berlin, DE
• Peer Sporbert · Berlin, DE
• Thomas Weise · Berlin, DE

Key dates

• Filing date: Apr 28, 2000
• Grant date: Jun 1, 2004
• Expiry date: Apr 28, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/30953
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In accordance with a specific embodiment of the present invention, an image is projected upon a surface. The image can include a pattern having a plurality of individual shapes used to measure and map the surface. The plurality of individual shapes include features that are detectable in a direction parallel to the plane formed by a projection axis of the projected shapes and a point associated with a view axis. The image further comprises a feature containing an encoding information for identifying the plurality of shapes individually. The feature containing encoding information can be a separate feature from each of the plurality of individual shapes, or may be a feature integral to the plurality of individual shapes. The feature containing encoding information is oriented such that the encoding information is retrieved along a line perpendicular to a plane formed by the projection axis and the point along the view axis. The use of the feature is used to perform multiframe reference independent scanning. In another embodiment, images having varying amounts of isolation from adjacent patterns are used to provide for a higher resolution area of the image.