LinkedInMario Romero, Ph.D.

Mario Romero, Ph.D.

Associate Professor at KTH and Technical co-founder at BrailleTech

Stockholm, Sweden
Higher Education
  1. KTH,
  2. BrailleTech
  1. KTH,
  2. Uppsala University,
  3. Georgia Institute of Technology
  1. Georgia Institute of Technology
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Associate Professor

– Present

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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.


  • Human-computer...
  • Computer Science
  • Science Writing
  • Ubiquitous Computing
  • Information...
  • Teaching
  • Technical Project...
  • Software Project...
  • User Interface Design
  • Presenter
  • Study Design
  • User Studies
  • User Experience
  • Human Factors
  • UI testing
  • Evaluation
  • Quantitative Analysis
  • Qualitative Research
  • Computer Graphics
  • Computer Vision
  • Image Processing
  • Artificial Intelligence
  • Machine Learning
  • Information Management
  • Data Management
  • Digital Media
  • Photography
  • Digital Imaging
  • Digital Photography
  • Digital Recording
  • Software Development
  • Programming
  • Matlab
  • C
  • C++
  • Java
  • Industrial Engineering
  • Construction Management
  • Civil Engineering
  • Graphic Design
  • Web Design
  • Web Development
  • Fluent English
  • Spanish
  • conversational French
  • Art
  • Art History
  • Construction Drawings
  • Hand Drawing
  • SketchUp
  • See 35+  See less


Georgia Institute of Technology

PhD, Computer Science

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

University of Illinois at Urbana-Champaign

MS, Computer Science

Activities and Societies: Research, Artificial Intelligence, Machine Learning.

Universidad San Francisco de Quito

BS, Industrial Engineering

Activities and Societies: Minor, English. Studies in Graphic Design, Art, and History of Art.

Universidad San Francisco de Quito

BS, Construction Engineering

Activities and Societies: Cum Laude

Alliance Française

DELF, French

Activities and Societies: Diplôme d'Etudes en Langue Française

Colegio e Instituto Normal Juan Montalvo

Bachiller, Físico-Matemático

Activities and Societies: Judo Club - National Bronze Medal

The Art Institute of Chicago

Summer School Diploma, Traditional Art Techniques

Activities and Societies: Drawing and Painting


Associate Professor

– Present (1 year 10 months)Stockholm, Sweden

I work on Visualization, Human-Computer Interaction, and Ubiquitous and Accessible Computing.

Technical co-founder

– Present (2 years 4 months)Atlanta, Georgia

I am the co-inventor and principal investigator of BrailleTouch and a technical co-founder of its development and distributing company, BrailleTech LLC.


(5 months)Stockholm, Sweden

I taught the Advanced Computer Graphics and Interaction class at KTH in the fall 2012.

Postdoctoral Researcher

Uppsala University
(8 months)Uppsala, Sweden

My involved modeling group behavior among humans collaborating and negotiating to solve complex problems.

Postdoctoral Research Fellow

Georgia Institute of Technology
(2 years 10 months)Atlanta, USA

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.

Graduate Research Assistant

Georgia Institute of Technology
(8 years 1 month)Atlanta, USA

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.

Intern Research Scientist

Seagate Technology
(4 months)Pittsburgh, USA

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.

GT-IBM Graduate Research Assistant

Georgia Institute of Technology
(1 year 2 months)Atlanta, USA

Designed, developed, deployed, and tested aging-in-place health care ubiquitous computing applications supported by computer vision and behavioral models.

Intel Opportunity Scholar's Program Mentor

Georgia Institute of Technology
(4 years)Atlanta, USA

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.

Coordinator Intel Opportunity Scholars' Program

Georgia Institute of Technology
(1 year 5 months)Atlanta, USA

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.

Graduate Teaching Assistant

Georgia Institute of Technology
(1 year 10 months)Atlanta, USA

CS8803 Pattern Recognition. Spring 2003.
CS1050 Constructing Proofs. Fall 2001.
Graded homework and exams, prepared and taught a number of sessions and tutored students.

Project Manager / Software Consultant

Grupo Microsistemas
(1 year 7 months)Quito, Ecuador

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.

Co-founder / Member of the Board / Technical Advisor / Instructor / Manager

Corporación Cultural Valdivia
(4 years)Salinas, Ecuador

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.

Independent Graphic Designer

(5 years 4 months)Quito, Ecuador

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.

Mathematics Tutor

Universidad San Francisco de Quito
(3 years 11 months)Quito, Ecuador

The Learning Center. One-on-one tutoring students in calculus, algebra, geometry, statistics.

Summer Intern / Plant Engineer

Pinturas Wesco
(4 months)Quito, Ecuador

Measured times and movements of plant operations to optimize production process efficiency.

Children's Art Instructor

(6 years 3 months)Quito, Ecuador

Instructor of introduction to art for children, ages 4 to 12, including history, appreciation, and techniques

Garçon Au Pair

(10 months)Paris, France

Tutored two children ages 2 and 4.



– Present

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.

Team members:

Connect 2 Congress(Link)

– Present

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 ( and other legislative behavioral statistics.

Team members:

C3 The Full Picture(Link)

Interactive web tool to visualize Google calendar data.

Team members:

Honors & Awards

Design Competition Winner

MobileHCI 2011

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

Human-Computer Interaction International

Best Paper Award for VizKid, a visualization of adult-child interactions for clinical analysis.

Fulbright Scholar

Fulbright Comission

Fulbright Scholar from the Foreign Student Program, Fulbright Commission, Quito, Ecuador.

Full Tuition and Fee Waiver

University of Illinois at Urbana-Champaign

Full tuition and fee waiver based on academic excellence.

Cum Laude

Universidad San Francisco de Quito

Rank 1 of 8 in Construction Engineering.
Rank 2 of 10 in Industrial Engineering.

Full Tuition and Fee Waiver

Universidad San Francisco de Quito

Full tuition and fee waiver based on academic excellence.

Additional Honors & Awards

- 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


Activity Shapes: Analysis Methods of Video-Recorded Human Activity in a Co-Visible Space(Link)

Space Syntax Symposium
January 2012

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.


An Evaluation of BrailleTouch: Mobile Touchscreen Text Entry for the Visually Impaired(Link)

May 2012

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.


From Texting App to Braille Literacy(Link)

May 2012

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.


Evaluating Video Visualizations of Human Behavior(Link)

ACM CHI 2011
March 2011

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.


Supporting Parents for in-Home Capture of Problem Behaviors of Children with Developmental Disabilities(Link)

January 2011

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.

  • Mario Romero, Ph.D.,
  • Nazneen, Rozga, A., Romero, M., Findley, A., Call, N., Abowd, G., Arriaga, R.

BrailleTouch: Mobile Texting for the Visually Impaired(Link)

January 2011

We present BrailleTouch, a touch typing application for the touch screen of mobile devices.


VizKid: A Behavior Capture and Visualization System of Adult-Child Interaction(Link)

January 2011

We present VizKid, a capture and visualization system for supporting the analysis of social interactions between an adult and a child with social disorders.


BrailleTouch: Designing a Mobile EyesFree Soft Keyboard(Link)

Mobile HCI
June 2011

We present the design of BrailleTouch: touch typing on a mobile touch screen.


Focus Groups for Functional InfoVis Prototype Evaluation: A Case Study(Link)

April 2010

We present an evaluation method that focuses on high-level analysis through focus group queries of a fully functional visualization prototype.


Connect2Congress: Visual Analytics for Civic Oversight(Link)

CHI 2010
April 2010

We present a visualization of legislative behavior to inform active citizenry.


Viz-A-Vis: Toward Visualizing Video through Computer Vision(Link)

InfoVis 2008
October 2008

We present a visualization of activity through space and time as an aggregate of motion over regions and periods of interest.


Living with Tableau Machine: A Longitudinal Investigation of a Curious Domestic Intelligence(Link)

Ubicomp 2008
September 2008

We present a longitudinal evaluation of Tableau Machine, an artificial intelligence and an interactive art installation for the home.


Tableau Machine: A Creative Alien Presence(Link)

March 2008

We present a creative engine for original art production.


Alien Presence in the Home: The Design of Tableau Machine(Link)

Personal and Ubiquitous Computing
October 2007

We present the design of Tableau Machine, an artificial intelligence and an interactive art installation for the home.


Automatic Administration of The Get Up And Go Test(Link)

July 2007

We present a vision system to automatically perform the get up and go mobility test in the home.


Tableau Machine: An Alien Presence in the Home(Link)

ACM CHI 2006
June 2006

We present the formative design and evaluation of Tableau Machine, an interactive art installation for the home with machine vision and activity characterization.


A Preliminary Investigation of Alien Presence(Link)

HCII 2005
July 2005

We discuss the design challenges and opportunities of "alien presences", non-anthropomorphic entities that exhibit complex intentionality.


Tracking Head Yaw by Interpolation of Template Responses(Link)

CVPR 2004
June 2004

We present an algorithm to track head orientation by interpolating the graded response to template classifiers at discrete angles of yaw.


Activity Shapes: Towards a spatiotemporal analysis in architecture(Link)

Revista De Arquitectura
August 2012

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).



Universidad San Francisco de Quito

  • Perspective I (ART110)
  • Graphic Design I (DIS201)
  • Spanish Composition I (HIS100)
  • Art Appreciation (ARH100)
  • Composition and Rhetoric in English (ENG201)
  • Introduction to Self Knowledge (FIL100)
  • Calculus 1 (MAT121)
  • Spreadsheet & Word Processing (CMP130)
  • Fencing (DEP120)
  • General Chemistry II (QUI121)
  • Seminar on Guadi and F.L. Wright (ARQS03)
  • Business Writing (ENG203)
  • Fencing II (DEP120)
  • General Physics I (FIS210)
  • Modern Western Civilization (HIS111)
  • Fundamentals of Music (MUS110)
  • Philosophy Readings (FILS01)
  • History of Ecuador (HIS120)
  • Technical Drawing (ING211)
  • Nutrition (NUTS01)
  • History of Art II (ARH262)
  • Financial Accounting I (FIN205)
  • General Physics III (FIS230)
  • Introduction to Economic Analysis (ECN200)
  • Iberoamerican Literature (ESP202)

Universidad San Francisco de Quito

  • Introduction to Programming (CMP110)
  • Advanced English I (ENG120)
  • Historical Issues (HIS100)
  • Creative Dance 1 (COMS03)
  • Spanish Composition II (ESP102)
  • Calculus 2 (MAT122)
  • General Chemistry I (QUI120)
  • Global Communication: Multi-Media (COM480)
  • Ecuadorian Ecology and Resources (ECL100)
  • Advanced English Composition (ENG202)
  • Calculus III (MAT123)
  • Structured Programming (CMP210)
  • Applied Sciences Colloquium (COL001)
  • Creative Dance II (COMS07)
  • Linear Algebra (MAT210)
  • Data Structures (CMP220)
  • General Physics II (FIS220)
  • Differential Equations (MAT220)
  • Music History and Appreciation II (MUS111)
  • Database Management: Apple (CMP290)
  • Vector Calculus (MAT230)

Volunteer Experience & Causes


Center for the Visually Impaired
(1 month)Social Services

Volunteer human guide and teacher for visually impaired children.

Car Donation

Heritage for the Blind
(1 month)Social Services

Donated my car to Heritage for the Blind.

Research Collaborator

Center for the Visually Impaired
– Present (3 years 5 months)Science and Technology

I collaborate with the Center for the Visually Impaired to run user studies and develop accessible computing technologies.

Opportunities Mario is looking for:

  • Joining a nonprofit board
  • Skills-based volunteering (pro bono consulting)

Causes Mario cares about:

  • Children
  • Health
  • Science and Technology

Organizations Mario supports:

  • World Health Organization


  1. English

    Native or bilingual proficiency
  2. Spanish

    Native or bilingual proficiency
  3. French

    Professional working proficiency


IEEE, ACM, ACM SIGCHI, Ubicomp, InfoVis

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