Multivariate calibration methods (partial least squares calibration, back propagation multilayer perceptrons networks, radial basis functions and generalized regression neural networks) were applied to the simultaneous fluorometric quantification of levofloxacin, garenoxacin and grepafloxacin, without previous separation steps. A data matrix was obtained by registering the emission spectra of m...

We describe an Augmented Reality system using the corners of a color cube for camera calibration. In the augmented image the cube is replaced by a computer generated virtual object. The cube is localized in an image by the CSC color segmentation algorithm. The camera projection matrix is estimated with a linear method that is followed by a nonlinear refinement step. Because of possible missclas...

In this paper a new calibration method is proposed for projector using an uncalibrated camera. The difficulty to get a set of 2D-3D points in order to compute the projection matrix between the projector and the world has no easy solution. Methods are either inaccurate or inflexible. We propose an easy and automatic way to calibrate a projector. This method is a combination of pattern detection ...

A weighted parallel factor analysis (W-PARAFAC) model is applied to excitation-emission matrix (EEM) fluorescence spectra of carbamate pesticides to aid with calibration in the presence of Raman scattering. Traditional PARAFAC inefficiently models the Raman scattering, resulting in prediction and calibration errors when a significant background is present. Four different weighting strategies we...

Inspired by the technique proposed by Zhang in [13], we proposed a new camera calibration technique, which only requires observing three or more planar con-centric conics at a few (at least two) different orientations. All computations involved are linear matrix manipulations. Compared with the classical techniques where an expensive calibration pattern is commomly used, our technique is easy t...

Theoretical aspects of methods for calibrating Stokes polarimeters are considered. The prospects and opportunities implementing the presented portable polarization systems used in biology medicine determined. Based on a comparative analysis, method polarimeter medical applications is proposed. chosen provides smallest error measuring parameters vector calculating optical anisotropy researching ...

This paper deals with a fundamental problem in motion and stereo analysis, namely that of determining the camera intrinsic calibration parameters. A novel method is proposed that follows the autocalibration paradigm, according to which calibration is achieved not with the aid of a calibration pattern but by observing a number of image features in a set of successive images. The proposed method ...