Publication statistics

Pub. period:2004-2012
Pub. count:17
Number of co-authors:24



Co-authors

Number of publications with 3 favourite co-authors:

Armando Barreto:10
Melvin Ayala:4
Julie A. Jacko:4

 

 

Productive colleagues

Malek Adjouadi's 3 most productive colleagues in number of publications:

Julie A. Jacko:84
Armando Barreto:20
Jian Huang:18
 
 
 

Upcoming Courses

go to course
Emotional Design: How to make products people will love
Starts tomorrow LAST CALL!
go to course
UI Design Patterns for Successful Software
86% booked. Starts in 9 days
 
 

Featured chapter

Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess

User Experience and Experience Design !

 
 

Our Latest Books

 
 
The Social Design of Technical Systems: Building technologies for communities. 2nd Edition
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
Gamification at Work: Designing Engaging Business Software
by Janaki Mythily Kumar and Mario Herger
start reading
 
 
 
 
The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad
start reading
 
 
 
 
The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam
start reading
 
 

Malek Adjouadi

 

Publications by Malek Adjouadi (bibliography)

 what's this?
2012
 
Edit | Del

Ortega, Francisco R., Barreto, Armando, Rishe, Naphtali and Adjouadi, Malek (2012): Towards 3D Data Environments using Multi-Touch Screens. In: Proceedings of the 2012 International Conference on Advances in Computer-Human Interactions 2012. pp. 118-121. Available online

The increase in availability of multi-touch devices has motivated us to consider interaction approaches outside the limitations associated with the use of a mouse. The problem that we try to solve is how to interact in a 3D world using a 2D surface multi-touch display. Before showing our proposed solution, we briefly review previous work in related fields that provided a framework for the development of our approach. Finally, we propose a set of multi-touch gestures and outline an experiment design for the evaluation of these forms of interaction.

© All rights reserved Ortega et al. and/or IEEE

 
Edit | Del

Huang, Jian, Barreto, Armando and Adjouadi, Malek (2012): Evaluation of dynamic image pre-compensation for computer users with severe refractive error. In: Fourteenth Annual ACM SIGACCESS Conference on Assistive Technologies 2012. pp. 175-182. Available online

Visual distortion and blurring impede the efficient interaction between computers and their users. Visual problems can be caused by eye diseases, severe refractive errors or combinations of both. Several image enhancement methods based on contrast sensitivity have been used to help people with eye diseases (e.g., age-related macular degeneration and cataracts), whereas few methods have been designed for people with severe refractive errors. This paper describes a new pre-compensation method to counter the visual blurring caused by the severe refractive errors of a specific computer user. It preprocesses the pictorial information through dynamic pre-compensation in advance, aiming to present customized images on the basis of the ocular aberrations of the specific computer user. The new method improves the previous static pre-compensation method by updating the aberration data according to pupil size variations, in real-time. The real-time aberration data enable us to generate better suited pre-compensated images, as the pre-compensation model is updated dynamically. An empirical study was conducted to evaluate the efficiency of the new pre-compensation method, through an icon recognition test. From the results of statistical analysis, we found that participants achieved significantly higher accuracy levels in recognizing the icons with dynamic pre-compensation, than when viewing the original icons. The accuracy is also significantly boosted when the icons were processed with dynamic pre-compensation method, in comparison with the previous static pre-compensation method.

© All rights reserved Huang et al. and/or ACM Press

2009
 
Edit | Del

Barreto, Armando, Faller, Kenneth John and Adjouadi, Malek (2009): 3D sound for human-computer interaction: regions with different limitations in elevation localization. In: Eleventh Annual ACM SIGACCESS Conference on Assistive Technologies 2009. pp. 211-212. Available online

Spatialized ("3D") audio may be useful as an alternative sensory channel to provide blind individuals with relevant spatial information in the physical world or while interacting with computers. However, an important limitation of this approach is the lower spatial resolution achievable through sound localization. While this limitation is widely acknowledged, few empirical evaluations of the sound localization achievable through audio spatialization techniques have been performed, particularly with respect to elevation localization. We performed such an empirical study and found quantitative confirmation that the localization accuracy deteriorates as the virtual sound position is set farther above or below the ear (height) level. This information may be valuable to HCI designers planning to use 3D sound.

© All rights reserved Barreto et al. and/or their publisher

2008
 
Edit | Del

Barreto, Armando, Gao, Ying and Adjouadi, Malek (2008): Pupil diameter measurements: untapped potential to enhance computer interaction for eye tracker users?. In: Tenth Annual ACM SIGACCESS Conference on Assistive Technologies 2008. pp. 269-270. Available online

In this paper, we propose the possibility of using real-time pupil diameter measurements, which are provided by most Eye Gaze Tracking (EGT) systems utilized for computer input by many individuals with severe motor impairments, to obtain an on-line estimation of the quality of the interaction with the computer, as perceived by the user. Increased computational power available to process, in real-time, pupil diameter data could, in the future, enable an assessment of the level of frustration (stress) that an EGT user may experience when the quality of the interaction deteriorates. This would be a critical first step in the direction of enabling EGT systems to initiate a re-calibration process, under those circumstances.

© All rights reserved Barreto et al. and/or ACM Press

 
Edit | Del

Wang, Lu and Adjouadi, Malek (2008): Automated Book Reader Design for Persons with Blindness. In: Miesenberger, Klaus, Klaus, Joachim, Zagler, Wolfgang L. and Karshmer, Arthur I. (eds.) ICCHP 2008 - Computers Helping People with Special Needs - 11th International Conference July 9-11, 2008, Linz, Austria. pp. 318-325. Available online

 
Edit | Del

Sesin, Anaelis, Adjouadi, Malek, Cabrerizo, Mercedes, Ayala, Melvin and Barreto, Armando (2008): An Eye Gaze Tracking System Using Customized User Profiles to Help Persons with Motor Challenges Access Computers. In: Miesenberger, Klaus, Klaus, Joachim, Zagler, Wolfgang L. and Karshmer, Arthur I. (eds.) ICCHP 2008 - Computers Helping People with Special Needs - 11th International Conference July 9-11, 2008, Linz, Austria. pp. 1161-1168. Available online

2007
 
Edit | Del

Alonso, Miguel, Barreto, Armando, Jacko, Julie A. and Adjouadi, Malek (2007): Evaluation of onscreen precompensation algorithms for computer users with visual aberrations. In: Ninth Annual ACM Conference on Assistive Technologies 2007. pp. 219-220. Available online

In this paper, we present statistical results from testing our precompensation algorithms with 20 human subjects. A factorial experiment was designed and tested to evaluate the significance that the method, icon size, and subject group have on the ability of users to identify icons. These results reinforce software and "artificial eye" test findings indicating that the methods used for precompensation provide a significant increase in retinal image quality for users that have visual aberrations present in the optical systems of their eyes. Significant interactions were also found that reveal circumstances under which the method may perform best.

© All rights reserved Alonso et al. and/or ACM Press

 
Edit | Del

Chin, Craig A., Barreto, Armando, Cremades, Gualberto and Adjouadi, Malek (2007): Performance analysis of an integrated eye gaze tracking / electromyogram cursor control system. In: Ninth Annual ACM Conference on Assistive Technologies 2007. pp. 233-234. Available online

Eye Gaze Tracking (EGT) systems allow individuals with motor disabilities to quickly move a screen cursor on a PC. However, there are limitations in the steadiness and the accuracy of cursor control and clicking capabilities they provide. On the other hand, a cursor control system to step the cursor up, down, left or right in response to voluntary contractions of specific facial muscles, developed by our group, provides steady and precise, albeit slow, cursor control, along with a reliable clicking mechanism. This system identifies muscle contractions by performing digital processing of the Electromyogram (EMG) signals generated by the facial muscles. Based on the complementary nature of the strengths of these two cursor control modalities we have developed an integrated EGT/EMG system in an attempt to consolidate the advantages of both input modalities. We have compared the selection accuracy and speed of an EGT-only cursor control implementation, our integrated EGT/EMG cursor control system and a standard handheld mouse in point-and click trials.

© All rights reserved Chin et al. and/or ACM Press

2006
 
Edit | Del

Alonso, Miguel, Barreto, Armando, Jacko, Julie A. and Adjouadi, Malek (2006): A multi-domain approach for enhancing text display for users with visual aberrations. In: Eighth Annual ACM Conference on Assistive Technologies 2006. pp. 34-39. Available online

In this paper, we describe a multi-domain approach for enhancing text displayed on a computer screen for users with visual aberrations. This research is based on a priori knowledge of the user's visual aberration, as measured by a wavefront analyzer. With this information it is possible to generate text that, when displayed to this user, will counteract his/her visual aberration. The method described in this paper advances the development of techniques for providing such compensation by integrating spatial information in the image as a means to eliminate some of the shortcomings inherent in using display devices such as monitors or LCD panels.

© All rights reserved Alonso et al. and/or ACM Press

 
Edit | Del

Adjouadi, Malek, Ruiz, Eddy and Wang, Lu (2006): Automated Book Reader for Persons with Blindness. In: Miesenberger, Klaus, Klaus, Joachim, Zagler, Wolfgang L. and Karshmer, Arthur I. (eds.) ICCHP 2006 - Computers Helping People with Special Needs, 10th International Conference July 11-13, 2006, Linz, Austria. pp. 1094-1101. Available online

 
Edit | Del

Jr., Miguel Alonso, Barreto, Armando, Adjouadi, Malek and Jacko, Julie A. (2006): HOWARD: High-Order Wavefront Aberration Regularized Deconvolution for Enhancing Graphic Displays for Visually Impaired Computer Users. In: Miesenberger, Klaus, Klaus, Joachim, Zagler, Wolfgang L. and Karshmer, Arthur I. (eds.) ICCHP 2006 - Computers Helping People with Special Needs, 10th International Conference July 11-13, 2006, Linz, Austria. pp. 1163-1170. Available online

 
Edit | Del

Herrera, Andres, Adjouadi, Malek and Ayala, Melvin (2006): An Integrated Design for a Myoelectrically-Based Writing Module for a Controlled Prosthesis. In: Miesenberger, Klaus, Klaus, Joachim, Zagler, Wolfgang L. and Karshmer, Arthur I. (eds.) ICCHP 2006 - Computers Helping People with Special Needs, 10th International Conference July 11-13, 2006, Linz, Austria. pp. 926-934. Available online

2005
 
Edit | Del

Alonso, Miguel, Barreto, Armando, Jacko, Julie A. and Adjouadi, Malek (2005): Verification of computer display pre-compensation for visual aberrations in an artificial eye. In: Seventh Annual ACM Conference on Assistive Technologies 2005. pp. 210-211. Available online

The possibility of pre-compensating images in a computer display according to the visual aberrations previously assessed in an optical system (e.g., the computer user's eye) has been confirmed for a simple "artificial eye". This device has been constructed from optical components, which include a plano-convex lens, an adjustable aperture, and a Charged-Couple Device (CCD) array that mimics the retina of a real eye. While the CCD array allows for the inspection of the image as it would form on the retina of a real eye, its specular reflection does not allow the resulting "artificial eye" to be measured appropriately in a wavefront analyzer (a necessary pre-requisite for the image precompensation process). Therefore, an alternative, interchangeable CCD array covered with gray paint (i.e., disabled) was also created to provide the diffuse reflectivity that is presumed in the operation of the wavefront analyzer. Experiments with this system show that the visual aberrations in a properly characterized optical system can, in fact, be precompensated by the methods proposed by Alonso et al., [1]. These same experiments, however, reveal the need to adjust the precompensation method according to the effective pupil diameter in the system during viewing.

© All rights reserved Alonso et al. and/or ACM Press

 
Edit | Del

Rishe, Naphtali, Adjouadi, Malek, Chekmasov, Maxim, Vasilevsky, Dmitry, Graham, Scott, Hernandez, Dayanara and Wolfson, Ouri (2005): XML-Based Semantic Database Definition Language. In: Chen, Chin-Sheng, Filipe, Joaquim, Seruca, Isabel and Cordeiro, Jos (eds.) ICEIS 2005 - Proceedings of the Seventh International Conference on Enterprise Information Systems May 25-28, 2005, Miami, USA. pp. 197-202.

 
Edit | Del

Rishe, Naphtali, Adjouadi, Malek, Chekmasov, Maxim, Vasilevsky, Dmitry, Graham, Scott, Hernandez, Dayanara and Wolfson, Ouri (2005): Storage Types in the Semantic Binary Database Engine. In: Chen, Chin-Sheng, Filipe, Joaquim, Seruca, Isabel and Cordeiro, Jos (eds.) ICEIS 2005 - Proceedings of the Seventh International Conference on Enterprise Information Systems May 25-28, 2005, Miami, USA. pp. 437-440.

2004
 
Edit | Del

Adjouadi, Malek, Landestoy, Dalila, Ayala, Melvin and Tischer, Walter (2004): A Real-Time Voice Controlled Human Computer Interface to Help Persons with Motor Disability. In: Klaus, Joachim, Miesenberger, Klaus, Zagler, Wolfgang L. and Burger, Dominique (eds.) ICCHP 2004 - Computers Helping People with Special Needs - 9th International Conference July 7-9, 2004, Paris, France. pp. 804-812. Available online

 
Edit | Del

Adjouadi, Malek, Sesin, Anaelis, Ayala, Melvin and Cabrerizo, Mercedes (2004): Remote Eye Gaze Tracking System as a Computer Interface for Persons with Severe Motor Disability. In: Klaus, Joachim, Miesenberger, Klaus, Zagler, Wolfgang L. and Burger, Dominique (eds.) ICCHP 2004 - Computers Helping People with Special Needs - 9th International Conference July 7-9, 2004, Paris, France. pp. 761-769. Available online

 
Add publication
Show list on your website
 
 

Join our community and advance:

Your
Skills

Your
Network

Your
Career

 
Join our community!
 
 
 

Page Information

Page maintainer: The Editorial Team
URL: http://www.interaction-design.org/references/authors/malek_adjouadi.html