Results 251 to 260 of about 619,717 (297)

Calibration and estimation of redundant signals

Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301), 2000
This paper presents an adaptive filter for real-time calibration of redundant signals consisting of sensor data and/or analytically derived measurements. The measurement noise covariance matrix is adjusted as a function of the a posteriori probabilities of failure of the individual signals. An estimate of the measured variable is obtained as a weighted
Asok Ray, Shashi Phoha
openaire   +1 more source

Estimation of the GSSM calibration error

Applied Optics, 2016
The calibration of the tertiary mirror of the Thirty Meter Telescope, also known as the giant science steering mirror (GSSM), is a step of great significance during its testing process. Systematic, drift, and random errors constitute the major limitations to the accuracy of the calibration measurements.
Linchu, Han, Jingxu, Zhang, Fei, Yang, Qichang, An   +3 more
openaire   +2 more sources

The Generic Bilinear Calibration-Estimation Problem

International Journal of Computer Vision, 1997
We identify a very general, recurring pattern in a number of well known problems in biological and machine vision. Many problems are of a peculiar double-sided nature: One attempts to estimate certain properties of the environment using a certain type of equipment and simultaneously one attempts to calibrate the same equipment on the structure of the ...
Koenderink, J.J., Koenderink-van Doorn, A.J.   +1 more
openaire   +3 more sources

Calibration Weighting and Estimation

2020
One of the important features of survey data is the availability of auxiliary information from the survey population. Auxiliary population information may be available from census enumerations or administrative records. It could also be obtained from unusual sources such as satellite images for natural resource inventory surveys or a previous survey ...
Changbao Wu, Mary E. Thompson
openaire   +1 more source

Parameter Estimation: Online Calibration

2017
Peer ...
Sanz Estapé, Gerard, Pérez Magrané, Ramon   +1 more
openaire   +3 more sources

CCD camera calibration and noise estimation

Proceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2003
The variation in digitized pixel values that is due to sensor noise and scene variation is quantified, using physical models for CCD (charge-coupled device) video cameras and material reflectance. This analysis forms the basis of algorithms for camera characterization and calibration and for surface description.
Glenn Healey, Raghava Kondepudy
openaire   +2 more sources

Gaze Estimation with Easy Calibration Method

Proceedings of the 2020 5th International Conference on Intelligent Information Technology, 2020
In the corneal reflection method for gaze estimation, the user is asked to look at multiple calibration points with known lines of sight, and the central pupil point is captured for each vision angle. Therefore, the center of the eye in the images can be acquired for each known eye rotation angle.
Kiyoshi Hoshino, Yuki Noguchi, Yuya Nakai   +2 more
openaire   +2 more sources

Direction-of-arrival estimation and array calibration for partly-calibrated arrays

2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
In this paper, a new direction-of-arrival (DOA) estimation technique applicable to partly-calibrated arrays (PCAs) composed of arbitrary subarrays with unknown subarray displacements is developed. The new method is not restricted to any specific array geometry and allows joint estimation of the DOAs and calibration of the entire sensor array.
Pouyan Parvazi, Marius Pesavento, Alex B. Gershman   +2 more
openaire   +1 more source