Associate Professor at KTH and Technical co-founder at BrailleTech
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I am an Associate Professor in the department of High-Performance Computing and Visualization (HPCViz) within the School of Computer Science and Communication at KTH, The Royal Institute of Technology, Stockholm. My research areas are Human-Computer Interaction, Information Visualization, and Ubiquitous and Accessible Computing.
Activities and Societies: Research Advisor, Gregory Abowd, Research Focus, Ubiquitous Computing, Information Visualization, Human Computer Interaction, Primary Research Tools, computer graphics, computer vision, system design, system evaluation, Matlab, user evaluations, qualitative methods, quantitative methods, digital image processing
Activities and Societies: Diplôme d'Etudes en Langue Française
Activities and Societies: Judo Club - National Bronze Medal
Activities and Societies: Drawing and Painting
I work on Visualization, Human-Computer Interaction, and Ubiquitous and Accessible Computing.
I am the co-inventor and principal investigator of BrailleTouch and a technical co-founder of its development and distributing company, BrailleTech LLC.
I taught the Advanced Computer Graphics and Interaction class at KTH in the fall 2012.
My involved modeling group behavior among humans collaborating and negotiating to solve complex problems.
Principal Investigator BrailleTouch
BrailleTouch is an eyes-free text entry application for multi-point touchscreen mobile devices such as smartphones and tablets.
Director Child Study Laboratory
Developing and evaluating new sensing and visualizing technologies in support of behavioral imaging for understanding and treating behavioral disorders. Advising PhD and Masters students.
The current focus of my research is semi-automatic video behavioral-content analysis supported by practical computer vision and information visualization techniques. I use human computer interaction evaluation methodologies to demonstrate improved performance at application tasks. In the past I have enjoyed research in artificial intelligence, computer vision, and computer graphics.
Designed, installed, and operated a sensor (camera) network at the Terabyte Home, Seagate's living laboratory. Created sensing algorithms to capture human behavior in data rich environments. Organized live data capture with participants under real everyday conditions. Created an interactive ubiquitous computing environment to track the location of participants and use this information to authorize distributed file access across a ubiquitous storage system. Created a smart digital picture frame to rate the value of images for its consumers.
Designed, developed, deployed, and tested aging-in-place health care ubiquitous computing applications supported by computer vision and behavioral models.
Founding Mentor. Tutored four undergraduate students, Daniel Hernandez, Marlena Frank, Katie Flinn, and Kate Rosier. We completed four projects in computer graphics and animation. Advised scholars academically and personally.
Support and encourage the academic success, retention and ultimate graduation rates of underrepresented students in Computer Science and Electrical and Computer Engineering. Interview and select prospective scholars. Design the goals and sub goals of the program and how to achieve them. Coordinate research and events.
CS8803 Pattern Recognition. Spring 2003.
CS1050 Constructing Proofs. Fall 2001.
Graded homework and exams, prepared and taught a number of sessions and tutored students.
First PeopleSoft Project Manager in the company and the country. Brought the advanced PeopleTools know-how from camps in Miami to Quito. Assisted the first sale processes of PeopleSoft in Ecuador. Set up the first systematic help-desk in the company.
Founding member and member of the Board. Designed and implemented the Mathematics, Physics and Computer Science curricula of the business-management-oriented restructuring project we won with the Ecuadorian Air Force Academy. Taught Mathematics, Physics, Computer Science and English and headed the Strategic Games Club. Taught one-to-one English to Citibank executives. Managed other teachers. Tutored students.
Won the contracts for logotype, image development, and stationary design for three companies and one contract for a national launching publicity campaign. Financed my undergraduate studies with this income.
The Learning Center. One-on-one tutoring students in calculus, algebra, geometry, statistics.
Measured times and movements of plant operations to optimize production process efficiency.
Instructor of introduction to art for children, ages 4 to 12, including history, appreciation, and techniques
Tutored two children ages 2 and 4.
BrailleTouch is an eyes-free keyboard for smart phones. Through controlled user studies we have determined that users can effectively transfer their braille typing proficiency without the need to learn new skills.
Connect 2 Congress (C2C) is a novel visualization system which is designed to reduce the level of complexity and time required to discover and comprehend congressional voting patterns. Connect 2 Congress serves as a primary source of Poole-Rosenthal scores (http://voteview.ucsd.edu/w-nominate.htm) and other legislative behavioral statistics.
Winner of the Design Competition at MobileHCI 2011, Stockholm, Sweden, with the design of BrailleTouch, an eyes-free mobile text entry technology for multi-touch tablets and smart phones based on braille.
Best Paper Award for VizKid, a visualization of adult-child interactions for clinical analysis.
Fulbright Scholar from the Foreign Student Program, Fulbright Commission, Quito, Ecuador.
Full tuition and fee waiver based on academic excellence.
Rank 1 of 8 in Construction Engineering.
Rank 2 of 10 in Industrial Engineering.
Full tuition and fee waiver based on academic excellence.
- Winner Design Competition MobileHCI 2011
- Best Paper Award HCII 2011
- Finalist Innovation Contest, GTRIC 2011
- Tower Award 2009
- Fulbright Scholarship, 1999-2001
- Encyclopedia Britannica Scholarship, 1999
- Cum Laude USFQ 1996
- Full tuition and fee waiver based on academic excellence USFQ
- Full tuition and fee waiver based on academic excellence UIUC
We present two methods for analysis of human occupancy of architectural spaces. We demonstrate the methods' applicability through three controlled experiments in an instrumented laboratory to sense human movement.
We present and analyze the results of a laboratory user study with 11 blind participants evaluating their performance using BrailleTouch, a software keyboard for eyes-free text entry on a smartphone, compared to a PACmate, a traditional braille keyboard, and a software keyboard directly mapping the PACmate onto a tablet computer.
We present a pilot user study with four teachers of visually impaired and blind children where we introduced BrailleTouch and asked the participants to reflect on how they would use this and other technologies in their efforts to teach literacy and life skills in their classroom and in general.
We present a two-part evaluation of operator low-level performance and preference and analyst high-level discovery using a video visualization of human behavior.
We present CRAFT, continuous recording and flagging technology. CRAFT supports the capture of target problem behaviors of children at home and the evaluation of the capturing adult's performance.
We present BrailleTouch, a touch typing application for the touch screen of mobile devices.
We present VizKid, a capture and visualization system for supporting the analysis of social interactions between an adult and a child with social disorders.
We present the design of BrailleTouch: touch typing on a mobile touch screen.
We present an evaluation method that focuses on high-level analysis through focus group queries of a fully functional visualization prototype.
We present a visualization of legislative behavior to inform active citizenry.
We present a visualization of activity through space and time as an aggregate of motion over regions and periods of interest.
We present a longitudinal evaluation of Tableau Machine, an artificial intelligence and an interactive art installation for the home.
We present the design of Tableau Machine, an artificial intelligence and an interactive art installation for the home.
We present a vision system to automatically perform the get up and go mobility test in the home.
We present an algorithm to track head orientation by interpolating the graded response to template classifiers at discrete angles of yaw.
Computational spatial analyses play an important role in architectural design processes, providing feedback about spatial configurations that may inform design decisions. Current spatial analyses convey geometrical aspects of space, but aspects such as space use are not encompassed within the analyses, although they are fundamental for architectural programming. Through this study, we initiate the discussion of including human activity as an input that will change the focus of current computational spatial analyses toward a detailed understanding of activity patterns in space and time. We envision that the emergent insights will serve as guidelines for future evaluation of design intents motivated by spatial occupancy, since we –designers– mentally constructing a model of the situation and activities on it (Eastman, 2001).
Volunteer human guide and teacher for visually impaired children.
Donated my car to Heritage for the Blind.
I collaborate with the Center for the Visually Impaired to run user studies and develop accessible computing technologies.
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