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Mukaigawa Y.,Osaka University | Raskar R.,MIT Media Laboratory | Yagi Y.,Osaka University
IPSJ Transactions on Computer Vision and Applications

We propose a new method to analyze scattering light transport in homogeneous translucent media. The incident light undergoes multiple bounces in translucent media, and produces a complex light field. Our method analyzes the light transport in two steps. First, single and multiple scatterings are separated by projecting high-frequency stripe patterns. Then, the light field for each bounce scattering is recursively estimated based on a forward rendering process. Experimental results show that scattering light fields can be analyzed and visualized for each bounce. © 2011 Information Processing Society of Japan. Source

Ferscha A.,Johannes Kepler University | Paradiso J.,MIT Media Laboratory | Whitaker R.,University of Cardiff
IEEE Pervasive Computing

As new technologies continuously wash floods of information over individuals via both personal devices and public ICT systems, it's becoming increasingly difficult for individuals to allocate their attention to the right things at the right times. Given this overabundance of information, attention management is of great interest to the pervasive computing community. The articles in this issue focus on understanding how attention is allocated and how information is perceived and shared so it can lead to informed decisions and behavioral change. © 2002-2012 IEEE. Source

Tseng T.,MIT Media Laboratory
Proceedings of IDC 2015: The 14th International Conference on Interaction Design and Children

While project documentation can help young Makers showcase their learning, prototyping skills, and creativity, motivating documentation practices has remained a challenge. Current tools for photographing projects are often disruptive to the flow of creating a design project, and compiling documentation into a readable and sharable format can be time consuming. To address these issues, I introduce Spin, a photography turntable system for creating animated documentation. Spin consists of a motorized turntable that pairs with a mobile device to capture 360-degree views of a DIY project at a particular point in time. These photographs are compiled into an animation of the project called a spin. As a project is developed over time, spin animations are compiled into a set animation showcasing the evolution of the project. This paper describes the motivation for creating the Spin system, its current implementation, and a planned pilot study involving introducing the system to several Makerspaces across the United States for extended use. Copyright is held by the owner/author(s). Source

Batrinca L.M.,University of Trento | Mana N.,FBK irst | Lepri B.,MIT Media Laboratory | Pianesi F.,FBK irst | Sebe N.,University of Trento
ICMI'11 - Proceedings of the 2011 ACM International Conference on Multimodal Interaction

Personality plays an important role in the way people manage the images they convey in self-presentations and employment interviews, trying to affect the other"s first impressions and increase effectiveness. This paper addresses the automatically detection of the Big Five personality traits from short (30-120 seconds) self-presentations, by investigating the effectiveness of 29 simple acoustic and visual non-verbal features. Our results show that Conscientiousness and Emotional Stability/Neuroticism are the best recognizable traits. The lower accuracy levels for Extraversion and Agreeableness are explained through the interaction between situational characteristics and the differential activation of the behavioral dispositions underlying those traits. © 2011 ACM. Source

Bletsas A.,Technical University of Crete | Lippman A.,MIT Media Laboratory | Sahalos J.N.,RCL
IEEE Journal on Selected Areas in Communications

This work studies zero-feedback distributed beamforming; we are motivated by scenarios where the links between destination and all distributed transmitters are weak, so that no reliable communication in the form of pilot signals or feedback messages can be assumed. Furthermore, we make the problem even more challenging by assuming no specialized software/hardware for distributed carrier synchronization; we are motivated by ultra-low complexity transceivers. It is found that zero-feedback (i.e. blind), constructive, distributed signal alignment at the destination is possible; the proposed scheme exploits lack of carrier synchronization among M distributed transmitters and provides beamforming gains. Possible applications include reachback communication in low-cost sensor networks with simple (i.e. conventional, no carrier frequency/phase adjustment capability) radio transceivers. © 2010 IEEE. Source

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