Chattanooga, TN, United States
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Chauvelin C.,Cognitics | Sagi T.,Cognitics | Coni P.,Thales Alenia | Andre J.-M.,Cognitics | And 2 more authors.
International Journal of Human-Computer Interaction | Year: 2014

By sending a vibration signal on a touch panel equipped with piezoelectric actuators, this study has a double purpose: analyzing the influence of technical characteristics of vibration signals on perception thresholds and analyzing the influence of sex on those thresholds. During the experiment, 46 participants were asked to leave their finger pressed on a touch panel and to inform the experimenter when perceiving a vibration. This work allowed identifying the minimum perceptual thresholds of haptic signals for 95% of a representative population, on a given vibration range. This study also particularly revealed perception differences depending on waveform. Finally, it provides significant results regarding the effect of sex on perceptual sensations: Female participants tend to get lower perceptual thresholds. ©, Copyright © Taylor & Francis Group, LLC.


Rache A.,Cognitics | Lespinet-Najib V.,Cognitics | Andre J.-M.,Cognitics
Proceedings - 2014 3rd International Conference on User Science and Engineering: Experience. Engineer. Engage, i-USEr 2014 | Year: 2015

The aim of this study is first, to have an overview of current professional practices related to the use of usability evaluation and conception methods (user testing, interview, etc.) of a human-machine interface (HMI); and then, to determine the factors influencing their use. For this purpose, we have developed an online survey aimed at professionals sensitive to usability issues. The survey was open for the last quarter of 2012; the final sample size was 98 professionals. The relevance of this questionnaire is to identify the level of knowledge and use for each usability method. Our study highlighted the following results: while some methods are frequently used, such as user testing; others are unknown to professionals, such as automated evaluation. Certain methods are known to professionals but used anecdotally, such as card sorting. The study also reveals some factors influencing how the use of each method is done. The results show that the use of each method depends on the professional's expertise, academic background and the sector in which they work. In a longer term, we want to conduct interviews with professionals to know about their practices in more detail. One of our final objectives is to provide an aid system to help designers to choose the best association of usability methods according to all of the contextual elements. © 2014 IEEE.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 749.11K | Year: 2011

Recent advances in technology have exposed enough computing power in easily available hardware that geometry synthesis algorithms that we were previously prohibitively compute-intensive are now a possibility. There is significant untapped potential in this area that so far has gone underutilized in existing simulations. Increasing the realism and accuracy of synthetic environments has become a priority, but current methods of simulating complex terrain features requiring manual, labor-intensive systems to generate certain complex terrain features accurately. In this effort, Cognitics will apply research from our Phase I effort to implement prototype software libraries and product(s) to simulate complex terrain features for urban traffic environments. This prototype software will be integrated into existing real-time simulation systems to make them capable of runtime modeling, integration, and interaction with complex terrain features. Cognitics has proven experience working with the storage, measurement, and analysis of geospatial data and software development, computational geometry and 3D visualization systems. Notably, the Principle Investigator for this SBIR, Kevin Bentley, is the software architect that designed the Master Database (MDB), currently used by SE Core.


Grant
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase II | Award Amount: 249.97K | Year: 2014

In recent years, the military has put a great deal of effort into improving the realism and accuracy of simulation and mission rehearsal programs. Enhancing the realism and fidelity of simulations for complex terrain features and urban areas has become a priority. While high resolution satellite and aerial imagery is commonly available, high resolution digital elevation model (DEM) data is not commonly available. While lower resolution terrain is often adequate for representing the general shape of the surface, coastal and shoreline features are not represented in the low resolution terrain. The low resolution DEM data does not provide enough detail to accurately simulate the transition between ground and water. Our solution creates high resolution transition zones to create detailed coastal areas and shorelines suitable for simulation and mission rehearsal.


Chauvelin C.,Cognitics | Sagi T.,Cognitics
Proceedings - 2014 6th International Conference on Intelligent Human-Machine Systems and Cybernetics, IHMSC 2014 | Year: 2014

Haptic touchscreens equipped with piezoelectric actuators are now widely integrated in consumer products (mobile, car dashboard, etc.) based on «generic» vibratory parameters. In this study, users are asked to build their own personalized haptic patterns and to associate those to predefined actions. Two main goals are explored: 1) the analysis of the most differentiating factors in the allocation of personalized signals to predefined actions, 2) the characterization of personalized vibratory signals by analyzing how they compare to generic haptic signals. © 2014 IEEE.


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Welcome to Cognitics, Inc. Read Kevin Bentley's 2013 I/ITSEC Paper Abstract As the overall fidelity and performance of simulation systems increases, there is a need for improved representation of transportation features ...


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Employment Cognitics is seeking experienced software developers with experience in C++, GIS, OpenGL, and video games. Software Engineer Intern Cognitics, Inc ...


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Contact Us For email inquiries, please contact us at info (at) cognitics.net ...


Cognitics | Entity website

Products SPAWN family SPAWN Procedural Modeling Toolkit SPAWN Plugin for Diamond Visionics SPAWN Plugin for Terra Vista Cognitics OpenDRIVE Software Development Kit SPAWN Synth Terrain Generation SPAWN Procedural Modeling Toolkit Creating 3D models of roads on a terrain seems like it should be simple. Over the years, many efforts have been made to accurately model transportation features for use in simulation and gaming ...

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