GPS/INS Integrity in Airborne Mapping

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Laser Doppler Imaging (LDI) is a non-invasive optical technique used for assessing the blood flow in biological tissue. This technique allows visualizing 2D distribution of blood flow over an extended area of tissue, e.g. human skin. We have developed a new high-speed instrument for full-field blood flow laser Doppler imaging. The new imager delivers high-resolution flow images every 0.7 to 11 seconds, depending on the number of points in the acquired time-domain signal (32-512 points) and the image resolut

Segmentation of moving objects in image sequences plays an important role in video processing and analysis. Evaluating the quality of segmentation results is necessary to allow the appropriate selection of segmentation algorithms and to tune their parameters for optimal performance. Many segmentation algorithms have been proposed along with a number of evaluation criteria. Nevertheless, no psychophysical experiments evaluating the quality of different video object segmentation results have been conducted. I

Max-min fairness is widely used in various areas of networking. In every case where it is used, there is a proof of existence and one or several algorithms for computing the max-min fair allocation; in most, but not all cases, they are based on the notion of bottlenecks. In spite of this wide applicability, there are still examples, arising in the context of wireless or peer-to-peer networks, where the existing theories do not seem to apply directly. In this paper, we give a unifying treatment of max-min fa

In this paper, a GPS-independent mobile navigation and mapping system is introduced. This system employs the photogrammetric intersection to determine the coordinates of the surrounding objects and then it uses these newly known objects to compute its own position, when it moves, by the photogrammetric resection.

We want to integrate colourfulness in an image quality evaluation framework. This quality framework is meant to evaluate the perceptual impact of a compression algorithm or an error prone communication channel on the quality of an image. The image might go through various enhancement or compression algorithms, resulting in a different -- but not necessarily worse -- image. In other words, we will measure quality but not fidelity to the original picture.While modern colour appearance models are able to predi

Within the validation work of EGNOS for civil aviation, it is interesting to analyze the transmitted corrections individually. In this paper, the ionospheric model of EGNOS is compared to the one determined by an independent organization (CODE). The continuous monitoring of the ionosphere is envisaged in order to analyze the ionospheric corrections in real-time. Two methods based on dual-frequency GPS measurements are described. The first approach computes the ionospheric delays after calibration of the rec

Traditional microphone array speech recognition systems simply recognise the enhanced output of the array. As the level of signal enhancement depends on the number of microphones, such systems do not achieve acceptable speech recognition performance for arrays having only a few microphones. For small microphone arrays, we instead propose using the enhanced output to estimate a reliability mask, which is then used in missing data speech recognition. In missing data speech recognition, the decoded sequence de

Any innovative design of a chem. or biol. reactor has to consider the dynamics of the primary phys. and chem. steps involved in the overall process. For homogeneous highly viscous systems the mixing time is of crucial importance for the product quality. In heterogeneous systems, product selectivity and reactor performance can be optimized under dynamic conditions. [on SciFinder (R)]

When satellite signals are available, the localisation of a pedestrian is fairly straightforward. However, in cities or indoors, dead reckoning systems are necessary. Our current research focuses on the development of algorithms for pedestrian navigation in both post-processing and real-time modes.

Max-min fairness is widely used in various areas of networking. In every case where it is used, there is a proof of existence and one or several algorithms for computing the max-min fair allocation; in most, but not all cases, they are based on the notion of bottlenecks. In spite of this wide applicability, there are still examples, arising in the context of mobile or peer-to-peer networks, where the existing theories do not seem to apply directly. In this paper, we give a unifying treatment of max-min fair

A low-power and low-voltage (LP/LV) RF front-end operating at 430MHz and implemented in a standard 0.5 mu m digital CMOS process is described. Specific LP/LV bias techniques and design tradeoffs are discussed and their application to the design of a fully integrated direct-conversion receiver is presented. The RF building blocks including a 200 mu A LNA, two different 50 mu A mixers and a ring-oscillator with differential I-Q outputs consuming 300 mu A at 430MHz, have been manufactured and their performance

The project presented in this paper aims at defining the limits of microsystems through the realisation of a navigation system based on inertial microsensors. The work includes (i) design, fabrication, characterisation of accelerometers and angular rate sensors, (ii) development of techniques for simulation of sensor behaviour, and (iii) design of a sensor data processing system.

GPS/INS Integrity in Airborne Mapping

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High-speed laser Doppler imaging of blood flow in biological tissue

A Framework for Evaluating Video Object Segmentation Algorithms

A Unified Framework for Max-Min and Min-Max Fairness with Applications

Photogrammetry-derived Navigation Parameters for INS Kalman Filter Updates

Measuring Colourfulness in Natural Images

The EGNOS Integrity Concept: Evaluation of the Ionospheric Corrections

Robust Speech Recognition with Small Microphone Arrays using the Missing Data Approach

Chemical reaction engineering for process optimization: the importance of primary processes on the molecular level

Digital Magnetic Compass and Gyroscope Integration for Pedestrian Navigation

A Unified Framework for Max-Min and Min-Max Fairness with Applications

A 1.3V low-power 430 MHz front-end using a standard digital CMOS process

Simulation and design of a three axis navigation microsystem based on micromachined sensors