If you’re unsure about the difference between point distance (resolution) and accuracy when 3D scanning, this quick guide is for you. Both factors impact your scan quality, but in different ways.
Point Distance is the distance between individual points in a 3D point cloud. A smaller point distance means there are more points, leading to higher resolution and more detail in the model. While resolution impacts detail, it does not affect accuracy.
Accuracy is how closely the 3D model created by a 3D scanner matches the object’s actual shape, size, and features. MetroX’s metrology-grade accuracy of 0.03 mm produces a model that closely matches the object’s true dimensions.
---- Created on MetroX by @Hellpanzer
Point Distance vs. Accuracy
Point distance affects detail, whereas accuracy defines model quality. A high point distance with low accuracy yields detailed but inaccurate models, while high accuracy with low point distance gives less detail but higher accuracy.
Which Should You Choose?
For tasks like reverse engineering or quality control, accuracy is essential. The scan doesn’t require the finest detail but must match the object’s size and shape.
----Created on MetroX 3D Scanner by @Ispanico97
On the other hand, point distance is crucial for 3D modelers creating realistic digital replicas, such as heritage preservation, design, and CGI.
----Created on MINI 2 3D Scanner by @dfodaro
Key Takeaway
Point distance impacts detail, while accuracy ensures the model aligns with real dimensions. Understanding how they work together will help you choose the right settings and scanner for your needs.