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Dongwook Yoon, Nicholas Chen, François Guimbretière, and Abigail Sellen

This paper introduces a novel document annotation system that aims to enable the kinds of rich communication that usually only occur in face-to-face meetings. Our system, RichReview, lets users create annotations on top of digital documents using three main modalities: freeform inking, voice for narration, and deictic gestures in support of voice. RichReview uses novel visual representations and timesynchronization between modalities to simplify annotation access and navigation. Moreover, RichReview’s...

Publication details
Date: 1 October 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Gerard Pons-Moll, Jonathan Taylor, Jamie Shotton, Aaron Hertzmann, and Andrew Fitzgibbon

We present a new method for inferring dense data to model correspondences, focusing on the application of human pose estimation from depth images. Recent work proposed the use of regression forests to quickly predict correspondences between depth pixels and points on a 3D human mesh model. That work, however, used a proxy forest training objective based on the classification of depth pixels to body parts. In contrast, we introduce Metric Space Information Gain (MSIG), a new decision forest training...

Publication details
Date: 1 August 2015
Type: Article
Publisher: Springer
Sameh Khamis, Jonathan Taylor, Jamie Shotton, Cem Keskin, Shahram Izadi, and Andrew Fitzgibbon

We describe how to learn a compact and efficient model of the surface deformation of human hands. The model is built from a set of noisy depth images of a diverse set of subjects performing different poses with their hands. We represent the observed surface using Loop subdivision of a control mesh that is deformed by our learned parametric shape and pose model. The model simultaneously accounts for variation in subject-specific shape and subject-agnostic pose. Specifically, hand shape is...

Publication details
Date: 1 June 2015
Type: Inproceeding
Publisher: IEEE – Institute of Electrical and Electronics Engineers
Kuansan Wang

Human is the only species on earth that has mastered the technologies in writing and printing to capture ephemeral thoughts and scientific discoveries. The capabilities to pass along knowledge, not only geographically but also generationally, have formed the bedrock of our civilizations. We are in the midst of a silent revolution driven by the technological advancements: no longer are computers just a fixture of our physical world but have they been so deeply woven into our daily routines that they are...

Publication details
Date: 18 May 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
John Vilk, David Molnar, Benjamin Livshits, Eyal Ofek, Chris Rossbach, Alexander Moshchuk, Helen J. Wang, and Ran Gal

Immersive experiences that mix digital and real-world objects are becoming reality, but they raise serious privacy concerns as they require real-time sensor input. These experiences are already present on smartphones and game consoles via Kinect, and will eventually emerge on the web platform. However, browsers do not expose the display interfaces needed to render immersive experiences. Previous security research focuses on controlling application access to sensor input alone, and do not deal...

Publication details
Date: 18 May 2015
Type: Proceedings
Publisher: IEEE – Institute of Electrical and Electronics Engineers
Jarrod Knibbe, Hrvoje Benko, and Andrew D. Wilson

Projector-camera (pro-cam) systems afford a wide range of interactive possibilities, combining both natural and mixed-reality 3D interaction. However, the latency inherent within these systems can cause the projection to ‘slip’ from its intended target, detracting from the overall experience. Because of this, pro-cam systems have typically shied away from truly dynamic scenarios. In turn, research has been exploring latency reduction techniques across a range of domains, but these techniques typically...

Publication details
Date: 11 May 2015
Type: Technical report
Publisher: Microsoft Research
Number: MSR-TR-2015-35
Helen J. Wang, Alexander Moshchuk, Michael Gamon, Mona Haraty, Shamsi Iqbal, Eli T. Brown, Ashish Kapoor, Chris Meek, Eric Chen, Yuan Tian, Jaime Teevan, Mary Czerwinski, and Susan Dumais

In this paper, we advocate “activity” to be a central abstraction between people and computing instead of applications. We outline the vision of the activity platform as the next-generation social platform.

Publication details
Date: 8 May 2015
Type: Technical report
Publisher: Microsoft Research
Number: MSR-TR-2015-38
Aditya Vashistha, Edward Cutrell, Gaetano Borriello, and William Thies

Interactive voice forums have emerged as a promising platform for people in developing regions to record and share audio messages using low-end mobile phones. However, one of the barriers to the scalability of voice forums is the process of screening and categorizing content, often done by a dedicated team of moderators. We present Sangeet Swara, a voice forum for songs and cultural content that relies on the community of callers to curate high-quality posts that are prioritized for playback to others....

Publication details
Date: 1 May 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Cecily Morrison, Marcus D'Souza, Kit Huckvale, Jonas F Dorn, Jessica Burggraaff, Christian Philipp Kamm, Saskia Marie Steinheimer, Peter Kontschieder, Antonio Criminisi, Bernard Uitdehaag, Frank Dahlke, Ludwig Kappos, and Abigail Sellen

Background: Sensor-based recordings of human movements are becoming increasingly important for the assessment of motor symptoms in neurological disorders beyond rehabilitative purposes. ASSESS MS is a movement recording and analysis system being developed to automate the classification of motor dysfunction in patients with multiple sclerosis using depth-sensing computer vision. It aims to provide a more consistent and finer-grained measurement of motor dysfunction than currently possible....

Publication details
Date: 1 May 2015
Type: Article
Masa Ogata and Masaaki Fukumoto

FluxPaper is a new paper-based medium that enables physical movement and dynamic interaction between a high-power magnetized paper and a programmable magnetic field. FluxPaper has a very thin patterned magnetic layer (0.1 mm) pasted behind the paper. A thin but strong neodymium-based magnet realizes fast, powerful, and precise physical actions while retaining the original characteristics of the paper that is widely used in our daily lives. Owing to an effective magnetic pattern and a computer-controlled...

Publication details
Date: 20 April 2015
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Rachel Jacobs, Steven Benford, and Ewa Luger

Publication details
Date: 18 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Ewa Luger, Lachlan Urquhart, Tom Rodden, and Michael Golembewski

The regulatory climate is in a process of change. Design, having been implicated for some time, is now explicitly linked to law. This paper recognises the heightened role of designers in the regulation of ambient interactive technologies. Taking account of incumbent legal requirements is difficult. Legal rules are convoluted, uncertain, and not geared towards operationalisable heuristics or development guidelines for system designers. Privacy and data protection are a particular moral, social and legal...

Publication details
Date: 17 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Juho Kim, Elena L. Glassman, Andrés Monroy-Hernández, and Meredith Ringel Morris

Teachers in conventional classrooms often ask learners to express themselves and show their thought processes by speaking out loud, drawing on a whiteboard, or even using physical objects. Despite the pedagogical value of such activities, interactive exercises available in most online learning platforms are constrained to multiple-choice and short answer questions. We introduce RIMES, a system for easily authoring, recording, and reviewing interactive multimedia exercises embedded in lecture videos....

Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Elena L. Glassman, Juho Kim, Andrés Monroy-Hernández, and Meredith Ringel Morris

Educators have developed an effective technique to get feedback after in-person lectures, called “muddy cards.” Students are given time to reflect and write the “muddiest” (least clear) point on an index card, to hand in as they leave class. This practice of assigning end-of-lecture reflection tasks to generate explicit student feedback is well suited for adaptation to the challenge of supporting feedback in online video lectures. We describe the design and evaluation of Mudslide, a prototype system...

Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
TJ Tsai, Andreas Stolcke, and Malcolm Slaney

Addressee detection answers the question, “Are you talking to me?” When multiple users interact with a dialogue system, it is important to know when a user is speaking to the computer and when he or she is speaking to another person. We approach this problem from a multimodal perspective, using lexical, acoustic, visual, dialog state, and beam-forming information. Using data from a multiparty dialogue system, we demonstrate the benefit of using multiple modalities over using a single modality. We also...

Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: IEEE – Institute of Electrical and Electronics Engineers
Emanuel Zgraggen, Steven M. Drucker, Danyel Fisher, and Robert DeLine

Many different domains collect event sequence data and rely on finding and analyzing patterns within it to gain meaningful insights. Current systems that support such queries either provide limited expressiveness, hinder exploratory workflows or present interaction and visualization models which do not scale well to large and multi-faceted data sets. In this paper we present (s|qu)eries (pronounced “Squeries”), a visual query interface for creating queries on sequences (series) of data, based...

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Saleema Amershi, Max Chickering, Steven M. Drucker, Bongshin Lee, Patrice Simard, and Jina Suh

Model building in machine learning is an iterative process. The performance analysis and debugging step typically involves a disruptive cognitive switch from model building to error analysis, discouraging an informed approach to model building. We present ModelTracker, an interactive visualization that subsumes information contained in numerous traditional summary statistics and graphs while displaying example-level performance and enabling direct error examination and debugging. Usage analysis from...

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Darren Edge, Sumit Gulwani, Natasa Milic-Frayling, Mohammad Raza, Reza Adhitya Saputra, Chao Wang, and Koji Yatani

Good alignment and repetition of objects across presentation slides can facilitate visual processing and contribute to audience understanding. However, creating and maintaining such consistency during slide design is difficult. In order to solve this problem, we present two complementary tools: (1) StyleSnap, which increases the alignment and repetition of objects by adaptively clustering object edge positions and allowing parallel editing of all objects snapped to the same spatial extent; and (2)...

Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Publication details
Date: 1 April 2015
Type: Article
Publisher: Now Publishers Inc.
H. M. Mentis, K. P. O'Hara, G. Gonzales, A. Sellen, R. Corish, A. Criminisi, R. Trivedi, and P. Theodore
Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Kotaro Hara and Shamsi T. Iqbal

Language barrier is the primary challenge for effective cross-lingual conversations. Spoken language translation (SLT) is perceived as a cost-effective alternative to less affordable human interpreters, but little research has been done on how people interact with such technology. Using a prototype translator application, we performed a formative evaluation to elicit how people interact with the technology and adapt their conversation style. We conducted two sets of studies with a total of 23 pairs (46...

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM Conference on Human Factors for Computing Systems (CHI)
Justin Cheng, Jaime Teevan, Shamsi T. Iqbal, and Michael S. Bernstein

A large, seemingly overwhelming task can sometimes be transformed into a set of smaller, more manageable microtasks that can each be accomplished independently. For example, it may be hard to subjectively rank a large set of photographs, but easy to sort them in spare moments by making many pairwise comparisons. In crowdsourcing systems, microtasking enables unskilled workers with limited commitment to work together to complete tasks they would not be able to do individually. We explore the costs and...

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM Conference on Human Factors for Computing Systems (CHI)
Tim Regan, David Sweeney, John Helmes, Vasilis Vlachokyriakos, Siân Lindey, and Alex S. Taylor

We present two sets of ‘data technologies’ that we have designed to collect and display local data, both derived from our engagement with a community. The first, Bullfrog, is a bespoke voting device. The second, a series of physical charts, respond to the increasing sophistication of data visualisations by making playful use of pie charts and bar graphs, reimagining them in mechanical forms that are compelling but easily readable.

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Rebecca D. Watkins, Abigail Sellen, and Siân E. Lindley

Reference is increasingly made to ‘digital collections’, yet this term encompasses accumulated digital objects of varying form, purpose and value. We review social science literature on material collections and draw from in-depth interviews with 20 people in the UK in order to offer a clearer understanding of what constitutes a digital collection and what does not. We develop a taxonomy that presents three distinct types of digital collection and demonstrate ways in which the affordances of digital...

Publication details
Date: 1 April 2015
Type: Inproceeding
Publisher: ACM – Association for Computing Machinery
Alex S Taylor, Siân Lindley, Tim Regan, David Sweeney, Vasillis Vlachokyriakos, Lillie Grainger, and Jessica Lingel

We present findings from a year-long engagement with a street and its community. The work explores how the production and use of data is bound up with place, both in terms of physical and social geography. We detail three strands of the project. First, we consider how residents have sought to curate existing data about the street in the form of an archive with physical and digital components. Second, we report endeavours to capture data about the street’s environment, especially of vehicle traffic....

Publication details
Date: 1 April 2015
Type: Proceedings
Publisher: ACM – Association for Computing Machinery
Awards: Honorable Mention
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