3D kinematic systems based on the images acquired by cameras are one of the most popular tools for a human motion analyses. Prior to the actual reconstruction a camera calibration procedure is needed. Originally 3D calibration cages were utilized for that purpose, but nowadays a vast majority of commercial systems rely on the wand calibration. When the highest degree of accuracy is requested, t...

A digital calibration technique for high resolution SAR ADC with only one redundant conversion bit is presented in this paper. The proposed work employs no extra calibration DAC or input signal as calibration reference. Calibration signal is generated through switching redistribution DAC in two calibration phase, so that calibration accuracy will not be affected by input signal distribution. DA...

indicates the location of metal implants. b) Auto-calibrated SENSE (RMSE = 1037). c) SENSE with single calibration (RMSE = 3364). The arrow indicates image artifacts. d) Autocalibrated ARC (RMSE=372). e) ARC recon using single calibration (RMSE = 383). f) ARC recon using two concatenated calibration data sets (RMSE = 364). Figure 3: a) Fast spin-echo image. b) Fully sampled MAVRIC image c)Under...

In this paper we investigate how intrinsic camera calibration and hand-eye calibration can be performed on a robot vision system using the simplest possible motions and a planar calibration object. The standard methods on plane-based camera calibration are extended with theory on how to use pure translational motions for the intrinsic calibration and we see how hand-eye calibration can be perfo...

Identifying model parameters is nowadays intrinsically linked with quantifying the associated uncertainties. While classical methods allow to handle some types of uncertainties such as experimental noise, they are not designed take into account variability between different test specimens, significant in particular for composites materials. The estimation impact this intrinsic on material prope...

Most existing calibration methods for multi-camera rigs are computationally expensive, use installations of known fiducial markers, and require expert supervision. We propose an alternative approach called infrastructure-based calibration that is efficient, requires no modification of the infrastructure (or calibration area), and is completely unsupervised. In infrastructure-based calibration, ...

For the astronomical community analyzing ISO-SWS data, a first point to assess when judging and qualifying the observational data concerns the flux calibration accuracy. Since the calibration process is not straightforward and since a wrong calibration may lead to an over-or underestimation of the results, knowledge on the full calibration process and on the still remaining calibration problems...

Building simulation must be calibrated to fit the customer’s bill before applying energy saving measures. However, existing calibration methods are usually too complex to be included in building simulation software. The author has developed and implemented in DOE2.1E based building simulation software a calibration method which assists the software user in the calibration process using built-in...

Camera calibration is a necessary step in 3D computer vision in order to extract metric information from 2D images. It has been studied extensively in computer vision and photogrammetry, and even recently new techniques have been proposed. In this chapter, we review the techniques proposed in the literature include those using 3D apparatus (two or three planes orthogonal to each other, or a pla...