Inus Technology, Inc.

Sungwook Cho

Donghoon Lee

Seockhoon Bae

Youngkwan Kim

Seungyob Kim

Doosoo Kim

An automated mechanism that identifies and defines a global coordinate system that is most appropriate for a collection of raw 3D scan data used to form a mesh model is discussed. More specifically, a coordinate system is identified that is able to minimize the total sum of deviation error while also minimizing the peak error for raw 3D scan data. The present invention searches for appropriate coordinate systems from raw 3D scan data in a fully automated way. Multiple coordinate systems in order of likelihood of leading to minimal global deviation error are identified and presented to a user. End users are also allowed to edit suggested coordinate system parameters interactively prior to the alignment of the 3D scan data being transformed based on a selected coordinate system.

System and method for automatic 3D scan data alignment

A mechanism for enabling a user to treat 3D scan data model regions as surface bodies so as to eliminate the need to convert model regions to parametric surfaces as a prerequisite to performing part body modeling operations is discussed. During CAD re-modeling raw 3D scan data is imported. The present invention allows a user to use a region directly as an input argument for a part body modeling operation as long as a sheet body (surface body) is applicable as a modeling input argument. Additionally, if any regions used in the body modeling are modified by the user, surfaces which have been generated from fitting regions are also recalculated and the body model is updated automatically. The region modification can happen when the user includes more scan data in the region, excludes scan data from the region, smoothes geometry, or uses other editing functions.

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Bucheon, South Korea

Sungwook Cho