AHCI RESEARCH GROUP
Publications
Papers published in international journals,
proceedings of conferences, workshops and books.
OUR RESEARCH
Scientific Publications
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Here you can find the complete list of our publications.
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You can expand the Abstract, Links and BibTex record for each paper.
You can use the tag cloud to select only the papers dealing with specific research topics.
You can expand the Abstract, Links and BibTex record for each paper.
2012
Gallo, Luigi; Minutolo, Aniello
Design and Comparative Evaluation of Smoothed Pointing: A Velocity-oriented Remote Pointing Enhancement Technique Journal Article
In: International Journal of Human-Computer Studies, vol. 70, no. 4, pp. 287–300, 2012, ISSN: 1071-5819.
Abstract | Links | BibTeX | Tags: C-D ratio, Ray pointing, Smoothed Pointing, User study, Wiimote
@article{galloDesignComparativeEvaluation2012,
title = {Design and Comparative Evaluation of Smoothed Pointing: A Velocity-oriented Remote Pointing Enhancement Technique},
author = { Luigi Gallo and Aniello Minutolo},
doi = {10.1016/j.ijhcs.2011.12.001},
issn = {1071-5819},
year = {2012},
date = {2012-04-01},
journal = {International Journal of Human-Computer Studies},
volume = {70},
number = {4},
pages = {287--300},
abstract = {The increasing use of remote pointing devices in various application domains is fostering the adoption of pointing enhancement techniques which are aimed at counterbalancing the shortcomings of desk-free interaction. This paper describes the strengths and weaknesses of existing methods for ray pointing facilitation, and presents a refinement of Smoothed Pointing, an auto-calibrating velocity-oriented precision enhancing technique. Furthermore, the paper discusses the results of a user study aimed at empirically investigating how velocity-oriented approaches perform in target acquisition and in trajectory-based interaction tasks, considering both laser-style and image-plane pointing modalities. The experiments, carried out in a low precision scenario in which a Wiimote was used both as a wand and a tracking system, show that Smoothed Pointing allows a significant decrease in the error rate and achieves the highest values of throughput in trajectory-based tasks. The results also indicate that the effectiveness of precision enhancing techniques is significantly affected by the pointing modality and the type of pointing task.},
keywords = {C-D ratio, Ray pointing, Smoothed Pointing, User study, Wiimote},
pubstate = {published},
tppubtype = {article}
}
The increasing use of remote pointing devices in various application domains is fostering the adoption of pointing enhancement techniques which are aimed at counterbalancing the shortcomings of desk-free interaction. This paper describes the strengths and weaknesses of existing methods for ray pointing facilitation, and presents a refinement of Smoothed Pointing, an auto-calibrating velocity-oriented precision enhancing technique. Furthermore, the paper discusses the results of a user study aimed at empirically investigating how velocity-oriented approaches perform in target acquisition and in trajectory-based interaction tasks, considering both laser-style and image-plane pointing modalities. The experiments, carried out in a low precision scenario in which a Wiimote was used both as a wand and a tracking system, show that Smoothed Pointing allows a significant decrease in the error rate and achieves the highest values of throughput in trajectory-based tasks. The results also indicate that the effectiveness of precision enhancing techniques is significantly affected by the pointing modality and the type of pointing task.
2010
Gallo, Luigi; Ciampi, Mario; Minutolo, Aniello
Smoothed Pointing: A User-Friendly Technique for Precision Enhanced Remote Pointing Proceedings Article
In: 2010 International Conference on Complex, Intelligent and Software Intensive Systems (CISIS), pp. 712–717, IEEE Computer Society, Krakow, Poland, 2010, ISBN: 978-1-4244-5917-9.
Abstract | Links | BibTeX | Tags: C-D ratio, Pointing, Smoothing, Wiimote
@inproceedings{galloSmoothedPointingUserFriendly2010,
title = {Smoothed Pointing: A User-Friendly Technique for Precision Enhanced Remote Pointing},
author = { Luigi Gallo and Mario Ciampi and Aniello Minutolo},
doi = {10.1109/CISIS.2010.76},
isbn = {978-1-4244-5917-9},
year = {2010},
date = {2010-02-01},
booktitle = {2010 International Conference on Complex, Intelligent and Software Intensive Systems (CISIS)},
pages = {712--717},
publisher = {IEEE Computer Society},
address = {Krakow, Poland},
abstract = {This paper presents Smoothed Pointing, a velocity-based precision enhancing technique for remote pointing by means of absolute devices. After discussing the most recent related work concerning the problem of accuracy in remote pointing by handheld input devices, we introduce the distinctive features of the Control-Display adaptation technique we have designed to: i) reduce the effect of both noise in input device signals and of hand tremors on the cursor stability; and ii) increase the accuracy of pointing when performed on large, high resolution displays. Moreover, we describe a 10 second calibration procedure to determine the filtering parameters, so as to free the user from a manual set up.},
keywords = {C-D ratio, Pointing, Smoothing, Wiimote},
pubstate = {published},
tppubtype = {inproceedings}
}
This paper presents Smoothed Pointing, a velocity-based precision enhancing technique for remote pointing by means of absolute devices. After discussing the most recent related work concerning the problem of accuracy in remote pointing by handheld input devices, we introduce the distinctive features of the Control-Display adaptation technique we have designed to: i) reduce the effect of both noise in input device signals and of hand tremors on the cursor stability; and ii) increase the accuracy of pointing when performed on large, high resolution displays. Moreover, we describe a 10 second calibration procedure to determine the filtering parameters, so as to free the user from a manual set up.
Gallo, Luigi; Minutolo, Aniello; Pietro, Giuseppe De
A User Interface for VR-ready 3D Medical Imaging by off-the-Shelf Input Devices Journal Article
In: Computers in Biology and Medicine, vol. 40, no. 3, pp. 350–358, 2010, ISSN: 0010-4825.
Abstract | Links | BibTeX | Tags: Healthcare, Interaction techniques, Medical Imaging, Mouse, Natural User Interfaces, Pointing, Rotation, User study, Virtual Reality, Wiimote
@article{galloUserInterfaceVRready2010,
title = {A User Interface for VR-ready 3D Medical Imaging by off-the-Shelf Input Devices},
author = { Luigi Gallo and Aniello Minutolo and Giuseppe De Pietro},
doi = {10.1016/j.compbiomed.2010.01.006},
issn = {0010-4825},
year = {2010},
date = {2010-01-01},
journal = {Computers in Biology and Medicine},
volume = {40},
number = {3},
pages = {350--358},
abstract = {The distinctiveness of clinical environments demands specific solutions in the design of both usable and practical user interfaces for 3D medical imaging. In this work, a novel user interface to provide a direct interaction in 3D space by off-the-shelf input devices is proposed. The interface, which has been implemented and integrated into an open-source medical image viewer, features a depth-enhanced mouse pointer and a novel rotation technique that uses the object's geometry as the rotation handle. The usability of the proposed approach is evaluated to show its effectiveness for use in professional 3D imaging applications.},
keywords = {Healthcare, Interaction techniques, Medical Imaging, Mouse, Natural User Interfaces, Pointing, Rotation, User study, Virtual Reality, Wiimote},
pubstate = {published},
tppubtype = {article}
}
The distinctiveness of clinical environments demands specific solutions in the design of both usable and practical user interfaces for 3D medical imaging. In this work, a novel user interface to provide a direct interaction in 3D space by off-the-shelf input devices is proposed. The interface, which has been implemented and integrated into an open-source medical image viewer, features a depth-enhanced mouse pointer and a novel rotation technique that uses the object's geometry as the rotation handle. The usability of the proposed approach is evaluated to show its effectiveness for use in professional 3D imaging applications.
2009
Gallo, Luigi; Ciampi, Mario
Wii Remote-enhanced Hand-Computer Interaction for 3D Medical Image Analysis Proceedings Article
In: CTIT '09: Proceedings of International Conference on the Current Trends in Information Technology, pp. 85–90, IEEE Computer Society, Dubai, United Arab Emirates, 2009, ISBN: 978-1-4244-5755-7.
Abstract | Links | BibTeX | Tags: 3D interaction, Data glove, Healthcare, Visualization, Wiimote
@inproceedings{galloWiiRemoteenhancedHandComputer2009,
title = {Wii Remote-enhanced Hand-Computer Interaction for 3D Medical Image Analysis},
author = { Luigi Gallo and Mario Ciampi},
doi = {10.1109/CTIT.2009.5423137},
isbn = {978-1-4244-5755-7},
year = {2009},
date = {2009-12-01},
booktitle = {CTIT '09: Proceedings of International Conference on the Current Trends in Information Technology},
pages = {85--90},
publisher = {IEEE Computer Society},
address = {Dubai, United Arab Emirates},
abstract = {In this paper, we introduce a low cost, not cumbersome, 3D user interface for exploring medical data. 3D imaging data can be manipulated in a semi-immersive virtual environment by means of an off-the-shelf wireless data glove equipped with an additional infrared LED. The LED is tracked by a Wii Remote, which is able to provide accurate positional information with no need for further six degrees of freedom position trackers. We also describe the interaction techniques we have designed specifically for a medical imaging scenario and provide some implementation details of the integration of the interface in an open-source image processing software for medical research.},
keywords = {3D interaction, Data glove, Healthcare, Visualization, Wiimote},
pubstate = {published},
tppubtype = {inproceedings}
}
In this paper, we introduce a low cost, not cumbersome, 3D user interface for exploring medical data. 3D imaging data can be manipulated in a semi-immersive virtual environment by means of an off-the-shelf wireless data glove equipped with an additional infrared LED. The LED is tracked by a Wii Remote, which is able to provide accurate positional information with no need for further six degrees of freedom position trackers. We also describe the interaction techniques we have designed specifically for a medical imaging scenario and provide some implementation details of the integration of the interface in an open-source image processing software for medical research.
2008
Gallo, Luigi; Minutolo, Aniello
A Natural Pointing Technique for Semi-Immersive Virtual Environments Proceedings Article
In: Mobiquitous '08 Proceedings of the 5th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking, and Services, pp. 1–4, ICST, Dublin, Ireland, 2008, ISBN: 978-963-9799-27-1.
Abstract | Links | BibTeX | Tags: Healthcare, Interaction techniques, Mouse, Pointing, Virtual Reality, Wiimote
@inproceedings{galloNaturalPointingTechnique2008,
title = {A Natural Pointing Technique for Semi-Immersive Virtual Environments},
author = { Luigi Gallo and Aniello Minutolo},
doi = {10.4108/ICST.MOBIQUITOUS2008.3863},
isbn = {978-963-9799-27-1},
year = {2008},
date = {2008-07-01},
booktitle = {Mobiquitous '08 Proceedings of the 5th Annual International Conference on Mobile and Ubiquitous Systems: Computing, Networking, and Services},
pages = {1--4},
publisher = {ICST},
address = {Dublin, Ireland},
abstract = {Several interaction metaphors and techniques have been proposed to allow a natural interaction in virtual environments. Usually all these techniques are designed to be used with input devices such as wands, 3D mice or gloves. However, the availability of a new generation of auto-stereoscopic displays now makes it possible to exploit virtual experiences in new scenarios. In this paper we propose a variation of the ray-casting technique suitable for use with a standard mouse. With this proposed technique, users can move a 3D cursor in the virtual world without worrying about the third dimension and without losing the level of immersion provided by the 3D display.},
keywords = {Healthcare, Interaction techniques, Mouse, Pointing, Virtual Reality, Wiimote},
pubstate = {published},
tppubtype = {inproceedings}
}
Several interaction metaphors and techniques have been proposed to allow a natural interaction in virtual environments. Usually all these techniques are designed to be used with input devices such as wands, 3D mice or gloves. However, the availability of a new generation of auto-stereoscopic displays now makes it possible to exploit virtual experiences in new scenarios. In this paper we propose a variation of the ray-casting technique suitable for use with a standard mouse. With this proposed technique, users can move a 3D cursor in the virtual world without worrying about the third dimension and without losing the level of immersion provided by the 3D display.
Gallo, Luigi; Pietro, Giuseppe De; Minutolo, Aniello
Realistic vs. Magic Interaction Metaphors in Virtual Environments Unpublished
2008.
Abstract | BibTeX | Tags: Interaction metaphors, Interaction techniques, Natural User Interfaces, Virtual Reality, Wiimote
@unpublished{galloRealisticVsMagic2008,
title = {Realistic vs. Magic Interaction Metaphors in Virtual Environments},
author = { Luigi Gallo and Giuseppe De Pietro and Aniello Minutolo},
year = {2008},
date = {2008-03-01},
address = {Mogliano Veneto, Italy},
abstract = {Virtual Reality (VR) technologies make it possible to reproduce faithfully real life events in computer-generated scenarios. This approach has the potential to simplify the way people solve problems, since they can take advantage of their real life experiences while interacting in synthetic worlds. In order to convey the users' knowledge to the VR context, interaction metaphors are used. They can be either realistic, i.e. based on real world rules, or magic. In this paper we discuss the subject of interaction metaphors and outline the pros and cons of realistic vs. magic approaches. We also present our experience in the development of interaction techniques in a practical scenario, and suggest an approach to design effective 3D interaction metaphors.},
keywords = {Interaction metaphors, Interaction techniques, Natural User Interfaces, Virtual Reality, Wiimote},
pubstate = {published},
tppubtype = {unpublished}
}
Virtual Reality (VR) technologies make it possible to reproduce faithfully real life events in computer-generated scenarios. This approach has the potential to simplify the way people solve problems, since they can take advantage of their real life experiences while interacting in synthetic worlds. In order to convey the users' knowledge to the VR context, interaction metaphors are used. They can be either realistic, i.e. based on real world rules, or magic. In this paper we discuss the subject of interaction metaphors and outline the pros and cons of realistic vs. magic approaches. We also present our experience in the development of interaction techniques in a practical scenario, and suggest an approach to design effective 3D interaction metaphors.