Version: dev-latest

Target Overview

MetriCal relies on targets to provide metric information that is otherwise difficult to obtain from an unstructured data collection. For instance, a single camera can suffer from scale ambiguity, commonly referred to as the "dollhouse" effect, where the size and distance of objects cannot be accurately determined without known reference points. Calibration targets provide these reference points, allowing MetriCal to accurately estimate both intrinsic and extrinsic parameters of all sensors.

Purchase MetriCal Targets

You can now purchase calibration targets directly from our online store. This store holds all the targets necessary to run through our calibration guides. If you are a company or facility that needs a more sophisticated target setup for automation or production line purposes, contact us at info@tangramvision.com.

Object Space Configuration Files

In MetriCal, targets refer to the physical objects used during calibration. The software then converts that to features or patterns that it can detect in the collected data. These features are represented in MetriCal as object spaces.

MetriCal requires an object space file in order to understand the geometry and layout of the targets being used. You'll find pre-defined object space templates for each target type within the target guides.

Note that unlike other similar calibration systems, MetriCal can support an arbitrary number of targets in a single calibration procedure without any special configuration. This means you can mix and match different target types to suit your specific calibration needs. You can do this by adding more object space entries to your configuration file.