Last import & Preparation

Stepping into 3D

Import and 3D Scan Handling
Import and process point cloud data from 3D scanners. The processing operations include surfacing and optimization of the mesh created: removal of noise and artiefacts and closing of holes. All operations can be performed automatically. The Scan Handling module transforms an unstructured high-density point cloud into an optimized 3D surface model in 2-3 minutes.

3D Last Model Preparation
This module prepares 3D last data for the 3D Last SystemTM. Input from CAD/CAM systems or from the Scan Handling Module typically need further processing before use as a basis for measurement, comparison and export to various third-party systems. The system identifies the sole and the inner, outer and center lines of the last. It automatically extracts last profiles and curves.

Last System

Import and 3D Scan Handling

Noise reduction - Noise and outliers are automatically removed from the imported point cloud for optimal quality.
Smart point cloud reduction - The system reduces the size of the point cloud while preserving a high level of detail in the relevant high-curvature areas.
Triangulation - Fast triangulation of point cloud data to create an accurate 3D surface.
Decimation - It is possible to further reduce the number of triangles that shape the 3D last model while preserving the accurate geometry in high-curvature areas.
Removal of holes and artiefacts - Advanced tools are used to automatically detect and remove holes and artefacts from the model's surface to produce a smooth and accurate 3D last model.
Plane cutting - Using a plane-cutting tool, it is easy to remove unwanted areas of the 3D last model, such as the top part of the last.

3D Last Model Preparation

Automatic curve detection - A number of curves and landmarks are automatically identified on the 3D last model. For example, the system can extract a center line drawn manually on the physical shoe last. These curves are important to identify the different parts of a last such as the inner/outer side, the sole etc.
Manual curve adjustment - In order to ensure optimal precision, the user has the possibility to manually adjust the detected curves and landmarks.
Last alignment - Automatic or manual alignment of the last in 3D space to ensure that all 3D lasts are systematically aligned according to their toe and heel height. This eases measurement and comparison performed in other 3Shape last modules.
Profile extraction - Various 2D section profiles can be extracted from the 3D last. Profiles are important in order to identify last characteristics and can be exported for use in external last design applications.
Last parts extraction - The system divides the 3D last into several 3D models based on the curves and profiles detected in the preceding steps. The parts include inner, other and bottom side of the last.