News

Radiometric block adjustment with GENA

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First results of radiometric block adjustment and digital radiometric model (DRM) generation have been presented in a joint article by the Institute of Geomatics (IG) and the company ALTAIS at the ISPRS Hannover Workshop 2013 held in Hannover (Germany).

In the article, a rigorous concept for radiometric block adjustment is described. The concept is based on atmospheric radiative transfer (ART) models, pre-selected bidirectional reflectance distribution function (BRDF) models (the Beisl-Woodhouse BRDF) and radiometric ground control points. The concept for a terrain's digital radiometric model (DRM) and its generation is also described. (A DRM is a model that provides the reflectance value and the BRDF of each ground point.)

Big welcome for Dr. Marta Blázquez as she joins our team

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We’re delighted to welcome mathematician and geomatician Dr. Marta Blázquez as GeoNumerics' new Scientific Programme  Manager.

Dr. Blázquez graduated in Applied Mathematics at the Technical University of Catalonia (UPC, Barcelona, Spain). Later on, she obtained a MSc in Airborne Photogrammetry and Remote Sensing from the Institute of Geomatics (IG, Castelldefels, Spain) and a PhD in Aerospace Science and Technology (UPC).

“It is a pleasure to welcome Dr. Blázquez aboard, an acknowledged expert for kinematic geodesy and photogrammetry, who is well versed in all aspects of sensor orientation and calibration. Her expertise in applied mathematics, scientific software development and technical project management makes her the perfect person for fostering our research and development activities in the field of trajectory determination for mapping and remote sensing applications,” said Jaume Sastre, GeoNumerics' Chief Operations' Officer.

GeoNumerics enters the GAL consortium

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GeoNumerics is proud to announce that, as of 2013-01-07, it has joined the GAL project consortium.

In the GAL project, GeoNumerics will contribute an extended capability of its GENA platform in order to handle millions of unknowns and the further development of the dynamicSURVEY model toolbox for GENA. The extended capability of GENA is a keystone in the implementation of the dynamic network approach for the solution of large systems of differential and non-differential observation equations with applications to aerial, terrestrial and marine mobile mapping. The model toolbox dynamicSURVEY will implement the mathematical models to derive gravity perturbations from inertial observations (linear accelerations and angular rates) and GPS/Galileo carrier phase observations.

The GENA design principles presented at the ISPRS XXII Congress

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For the first time, a number of features and design principles of the GENA platform and model toolboxes have been publicly presented in a joint paper co-authored by Dr. Ismael Colomina, Dr. Marta Blázquez, Dr. José A. Navarro (Institue of Geomatics, IG) and Mr. Jaume Sastre (GeoNumerics, GN). The paper discusses the relevance of extensible network adjustment programmes in view of the current wave of sensor technology and the needs for rapid sensor prototyping (in the sensor design phase), rapid sensor orientation and calibration modelling (in the sensor commercialization phase) and accurate sensor orientation and calibration (in the sensor exploitation phase).

In the paper, the need for software tools that allow for rapid and safe development of models -with protection of intellectual property rights if desired- is translated into software specifications of simplicity, genericity and extensibility that, in turn, lead to architectural constructs where the general robust non-limear least-squares (RNLLS) functionality is concentrated in a software platform and the specific sensor features (models) are concentrated on reusable software components.