X-ray fluorescence (XRF) spectroscopy was measured on duplicate libraries deposited on Si (without BiVO4) due to the overlap between the Ce Lα line (4.839 kV) from the coating and the V Kα line (4.952 kV) from the BiVO4. The x-ray beam was approximately 2 mm in diameter. Since the XRF sampling depth far exceeds the film thickness, XRF counts for each element were assumed to be proportional to t...

The accuracy of a depth map acquired using triangulation or stereo techniques is limited by the resolution of the sensor, and by the accuracy with which distortions of the image can be calibrated. This paper lists the sources of error in an imaging system, and concludes that most of them can be removed by careful camera design and calibration, with the exception of the spatial quantisation (dis...

Confidence calibration – the problem of predicting probability estimates representative of the true correctness likelihood – is important for classification models in many applications. We discover that modern neural networks, unlike those from a decade ago, are poorly calibrated. Through extensive experiments, we observe that depth, width, weight decay, and Batch Normalization are important fa...

Based on the piezoelectric effect of piezoelectric quartz crystal, a two-dimensional force sensor with good dynamic characteristics is designed, whose sensitive component is single-cut piezoelectric quartz wafers, and it realizes the measurement of force by measuring the charge which is generated by piezoelectric quartz crystal. This paper analyzes measurement principle of the sensor based on t...

This paper describes a method to upgrade projective reconstruction to a ne and to metric reconstructions using rigid general or planar motions of a stereo rig. We make clear the algebraic relationships between projective reconstruction, the plane at in nity (a ne reconstruction), camera calibration, and metric reconstruction when a 3-D scene is observed with a moving stereo rig. Based on an in-...

Presently there is a growing demand for fast and precise 3D computer vision systems for a wide variety of industrial applications like reverse engineering, quality control and industrial gauging. One important aspect of any vision system is the data acquisition. If the principle of triangulation is used the correspondence problem is to be solved. The coded light approach o ers a fast way to ove...

In this paper, we present a new fully automatic method for the geometric calibration of a video projector combining structured light projection and a RGBD camera. The projection surface does not need to be planar and is supposed to be unknown. Intrinsic and extrinsic parameter are computed without a scale factor uncertainty or any prior knowledge about the projector. Our method is based on the ...

This study aims to develop a calibration system for radioactivity of beta sources using a calibration constant which derived from comparing measurement and simulation. It is hard to measure the activity of beta emitter isotope due to selfabsorption and scattering. So the activity involves high levels of uncertainty. The surface dose of Sr/Y-90 standard isotope was measured using extrapolation c...

For surface reconstruction using motion, objects are placed on a rotating disc in front of a single camera. For camera calibration the method by [Tsai 1986] was implemented, extended (calculation of distorted from undisturbed coordinates) and optimized (e.g. with respect to the number of calibration planes and points in each plane). It is described how the calibration results can be used for th...