In computer vision tasks, it frequently happens that gross noise occupies the absolute majority of the data. Most robust estimators can tolerate no more than 50% gross errors. In this article, we propose a highly robust estimator, called MDPE (Maximum Density Power Estimator), employing density estimation and density gradient estimation techniques in the residual space. This estimator can toler...

The dynamics of vortices in Bose-Einstein condensates dilute cold atoms can be well formulated by Gross-Pitaevskii equation. To better understand the properties vortices, a systematic method to solve nonlinear differential equation for vortex very high precision is proposed. Through two-point Pad$\acute{\text{e}}$ approximants, these solutions are presented terms simple rational functions, whic...

Introduction: The aim of this study was to determine the accuracy of two different immobilization methods in patient positioning in cranial radiotherapy. The six-dimensional (6D) target localization accuracy of using a dedicated stereotactic mask was compared with that of a conventional head mask by the ExacTrac system. Material and Methods: ...

Measurement results contain different kinds of uncertainty. Besides systematic errors andrandom errors individual measurement results are also subject to another type of uncertainty,so-called emph{fuzziness}. It turns out that special fuzzy subsets of the set of real numbers $RR$are useful to model fuzziness of measurement results. These fuzzy subsets $x^*$ are called emph{fuzzy numbers}. The m...

Ultra-wideband (UWB) technology is suitable for indoor positioning owing to its high resolution and penetration. However, the current UWB methods not only fail fully analyze errors, but do have ability eliminate gross large random errors. In this article, errors of are analyzed comprehensively, basic function model given. An method based on a double difference with ranging observations proposed...

Internet offers a new direction for software development and also for photogrammetry. The affordable commercial digital cameras are widely available and their geometrical resolution is good enough to perform photogrammetric measurements. Seeing this, a widely accessible, web based photogrammetry application could be a new development direction for photogrammetry. For photogrammetric calculation...

The paper presents methods for evaluating the accuracy of alignments between transcriptions and audio recordings. The methods have been applied to the Spoken British National Corpus, which is an extensive and varied corpus of natural unscripted speech. Early results show good agreement with human ratings of alignment accuracy. The methods also provide an indication of the location of likely ali...

CBERS-02B was the first high resolution earth observation satellite in China, which adopted linear array push-broom sensor. The nadir ground resolution of the on board HR camera was 2.36 m. However, the accuracies of the on-board GPS receiver and star tracker were very limited due to the technical restrictions. The accuracy of direct geo-referencing by the on-board measurements of position and ...

In a measurement process, measurement data may involve gross errors, which significantly exceed true values, when a measurement quantity is measured repeatedly without significant changes in measurement conditions. If the suspicious data remained during data processing, it will cause incorrect assessment on measurement accuracy due to the distorted measurement results have been used. Correct id...