fiduziale

Fiduziale is an adjective used to describe something that serves as a fiducial or reference point for measurements, calibration, or positioning. The term is related to the concept of fiducia, conveying the idea of a trusted standard or benchmark that anchors perception, alignment, or assessment. In Italian, the standard term is more commonly fiduciale, but fiduziale may appear in some contexts or regional usages.

In metrology and calibration, fiduziali are reference marks, grids, or targets that allow instruments to be calibrated, checked for accuracy, or aligned with a known standard. They provide a stable basis for comparing measurements over time or across devices.

In computer vision and imaging, fiducial markers (fiduciali) are artificial patterns placed in a scene to enable precise camera calibration, pose estimation, and 3D reconstruction. Examples in practice include, but are not limited to, specific square or binary patterns known to software for decoding their position and orientation.

In medicine and radiology, fiducial markers can be implanted or positioned on the body to delineate treatment areas or to align imaging sessions and radiotherapy with high precision.

In astronomy and geodesy, fiducial points or markers serve as reference anchors for coordinate frames, telescope alignment, and the integration of data across observations.

In statistics, fiducial inference is a controversial approach aimed at deriving probability-like measures directly from data without a prior distribution.

Notes: the term should not be confused with fiduciary, which relates to trust and the duties of trustees.