Method of obtaining 3D model data of a plurality of components of an object

Abstract

The present invention provides obtaining 3D model data of a plurality of components of an object. The present application relates among other things to a method comprising: obtaining x- ray data (X2) for a multi-component object; processing the x-ray data (X2) to obtain at least first and second 3D representations (X3-H, X3-M) of the object with respective first (H) and second (M) resolutions, the first resolution (H) being higher than the second resolution (M); identifying a plurality of regions (X311, X312,...] of the second 3D representation (X3-M), each region (X311, X312,...) corresponding to one of a plurality of components of the object, by at least: identifying a plurality of initial regions of the second 3D representation (X3-M), each initial region having pixel values in one of a plurality of ranges (Ti) of pixel values; and selectively adjusting each of the plurality of initial regions based on a comparison between the initial region and one or more features (Di) derived from one or more 2D sections of at least part of the object obtained from the first 3D representation (X3-H); and obtaining, for each of the plurality of components, a 3D model (M211, M212,...) of the component based on a corresponding region (X311, X312,...) and / or based on one or more features (Di) derived from one or more 2D sections of at least part of the object obtained from the first 3D representation (X3-H).

Description

technical field [0001] In particular, the present application relates to methods and systems for obtaining three-dimensional (3D) model data of various components of an object, such as a motor vehicle. Background technique [0002] There is considerable interest in the (competitive) evaluation / marking of complex objects such as motor vehicles, which may comprise, for example, more than 10,000 components. [0003] These objects can be physically disassembled, but this is often destructive, requires extensive manual work, and the disassembly process loses information about, for example, the 3D arrangement of parts. [0004] X-ray computed tomography (CT) systems are often used to analyze individual components or relatively small numbers of components, for example to detect cracks and the like. However, the use of such systems to effectively analyze complete complex objects such as motor vehicles has been prevented, at least in part, by the significant difficulties in processi...

AI Technical Summary

Problems solved by technology

However, the use of such systems to effectively analyze complete complex objects such as motor vehicles has been prevented, at least in part, by the significant difficulties in processing the data involved

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