Holocreators

Estimated reading time: mins

Last updated: 15.06.2020
Product Review

Artec Space Spider 3D-Scanner Product Review

The Artec Space Spider is a handheld 3D scanner. The cameras on the front look like spider eyes— hence the name "Spider". The 3D scanner is very light and works with blue-structured light. It was developed primarily for 3D scanning smaller objects of between 5 and 30 cm. The manufacturer states the accuracy of the 3D scanner to be within 0.1mm-0.05 mm. Currently, the Artec Space Spider lists for about 20,000 Euro (23,626 USD).

Estimated reading time: mins

Last updated: 02.08.2020
Explanation

What is the difference between NURBs model and a mesh?

A NURBS model consists of points connected by curves. A polygon mesh consists of thousands or millions of small triangles. CAD surface models are usually created using NURBS surfaces, while 3D scans are typically exported as a polygon mesh. The conversion from a polygon mesh to a NURBS model is called "reverse engineering".

Estimated reading time: mins

Last updated: 12.06.2020
Explanation

What is a Point Cloud?

A 3D scanner generates a point cloud. Each point in the point cloud is a measurement point that the 3D scanner has detected on the object’s surface. Each point has an XYZ value that determines its position in the coordinate system. In addition to the XYZ coordinates, certain point clouds can also store the color and light intensity of the measurement point. A direction vector can also be assigned to each point—this indicates the direction in which the point is oriented.

Estimated reading time: mins

Last updated: 15.06.2020
Tutorial

How to 3D scan for free?

You only need a mobile phone and some free software to create a free 3D scan. The technique is called photogrammetry. We 3D-scanned the same part twice—once for free and once with a professional 3D scanner—then compared both 3D scans. The result: The free 3D scan has a deviation of only about 0.2mm compared to the professional 3D scan.

Estimated reading time: mins

Last updated: 12.11.2020
Explanation

How to 3D-scan people or animals?

With the help of specialized 3D scanners, you can 3D-scan people and animals. This allows you to create 3D models that can be 3D-printed or used for 3D animation. We'll show you three different devices that make such 3D scans possible.

Estimated reading time: mins

Last updated: 01.08.2020
Explanation

Deviation analysis (nominal actual comparison)

We perform a deviation analysis in metrology to compare two 3D models with each other and to document the differences with a false color comparison. The analysis is mainly used in quality assurance to document reverse engineering deviations from the original 3D scan. If we compare the CAD data (nominal state) of a part with the 3D scan (actual state) of the same part, this is called a “nominal actual comparison”.