IMACS: A Framework for Performance Evaluation of Image Approximation in a Closed-loop System

Image Processing (IP) applications have become popular with the advent of efficient algorithms and low-cost CMOS cameras with high resolution. However, IP applications are compute-intensive, consume a lot of energy and have long processing times. Image approximation has been proposed by recent works for an energy-efficient design of these...

Advances in constructing regional geological voxel models, illustrated by their application in aggregate resource assessments

Aggregate resource assessments, derived from three subsequent generations of voxel models, were compared in a qualitative way to illustrate and discuss modelling progress. We compared the models in terms of both methodology and usability. All three models were produced by the Geological Survey of the Netherlands. Aggregate is granular mineral...

A generic approach for 3D SDI in The Netherlands

This paper presents a research project in The Netherlands in which a large number of stakeholders are collaborating on a 3D test bed, selected use cases and a test area to push 3D applications in the Netherlands. The project studies and realizes a proof of oncept for a 3D Spatial Data Infrastructure, that addresses issues ranging from 3D data...

From images to 3D models made easy

FIT3D is a Toolbox built for Matlab that aims at unifying and distributing a set of tools that will allow the researcher to obtain a complete 3D model from a set of calibrated images. In this paper we motivate and present the structure of the toolbox in a tutorial and example based approach. Given its flexibility and scope we believe that FIT3D...

FIT3D Toolbox: multiple view geometry and 3D reconstruction for MATLAB

FIT3D is a Toolbox built for Matlab that aims at unifying and distributing a set of tools that will allow the researcher to obtain a complete 3D model from a set of calibrated images. In this paper we motivate and present the structure of the toolbox in a tutorial and example based approach. Given its flexibility and scope we believe that FIT3D...

Identification of air and sea-surface targets with a laser range profiler

Current coastal operations have to deal with threats at short range in complex environments with both neutral and hostile targets. There is a need for fast identification, which is possible with a laser range profiler. A number of field trials have been conducted to validate the concept of identification with a laser range profile. A laser range...

Modelling a crime scene in 3D and adding thermal information

Once a crime has been perpetrated, forensic traces will only be persevered in the crime scene for a limited time frame. It is therefore necessary to record a crime scene meticulously. Usually, photographs and/or videos are taken at the scene to document it, so that later on one will know the exact place of an object. Another possibility is to...

Reconstruction and Analysis of Shapes from 3D Scans

In this thesis, we measure 3D shapes with the use of 3D laser technology, a recent technology that combines physics, mathematics, and computer science to acquire the surface geometry of 3D shapes in the computer. We use this surface geometry to fully reconstruct real world shapes as computer models, and to analyze the characteristics and...

Thunderstorms in my computer: The effect of visual dynamics and sound in a 3D environment

We assessed the effects of the addition of dynamic visual elements and sounds to a levee patroller training game on the appraisal of the environment and weather conditions, the engagement of the users and their performance. Results show that the combination of visual dynamics and sounds best conveys the impression of severe weather conditions...

Reconstruction of an incident using video images and 3D models

The growing amount of security cameras increases the chance that there is important video footage available for the reconstruction of an incident. Using the right methods for analysis of large amounts of videos, it is possible to use this relevant information. In collaboration with the Netherlands Forensic Institute (NFI), research is done on...

Modelling head injury countermeasures: A 3D helmet model

A three dimensional Finite Element Model of an existing full-face motorcycle helmet mounted on a headform has been developed. Material parameters were obtained from literature data and from component tests. The model is validated by simulating impacts at different locations using the headforrn acceleration time histories. From this it can be...