fiducial point

fiducial point

[fə′dü·shəl ‚pȯint]
(optics)
A mark, or one of several marks, visible in the field of view of an optical instrument, used as a reference or for measurement. Also known as fiduciary point.
References in periodicals archive ?
Each fiducial point of the 3D face scans is located in the same position of the texture frame.
0001 m were applied to station positions of the fiducial point in order to reference the network solutions to the ITRF2005.
Images were captured immediately adjacent to a single external fiducial point to ensure that the fields from each section corresponded.
The important fiducial point at [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the Schwarzschild radius [r.
Analysis of the slope estimated over the ECG signal segments will be used for the ECG fiducial point detection.
The P-QRS-T waves were investigated and employed to extract the fiducial points in real-time and adaptive techniques for the detection and delineation of furthermore, seven features that characterize the different intervals of the ECG signal were take out and used that data feed to the naive Bayes to classify the each heartbeat as normal or abnormal.
The first type of feature extraction used fiducial points based on geometric positions and the second type was based on multi-scale Gabor wavelet coefficients which were extracted,using fiducial points from the facial image.
Almost all definitions of PAT relay on the high quality photoplethysmogram signal with clearly visible fiducial points on the PPG waveform.
Four fiducial points, labeled A, B, C and D, at predetermined distances were indexed in four radio- graphs which were randomly selected.
Kiss 104 also features Automated Optical Alignment system, including a high-quality camera and machine vision system to align each assembly to be soldered using preprogrammed fiducial points on the board.
The fiducial points on a PCB are meant to aid the automatic machines in the production line.