Papers by Colin Swindells
Physical controls such as knobs, sliders, and buttons are experiencing a revival as many computin... more Physical controls such as knobs, sliders, and buttons are experiencing a revival as many computing systems progress from personal computing architectures towards ubiquitous computing architectures. We demonstrate a process for measuring and comparing visceral emotional responses of a physical control to performance results of a target acquisition task. In our user study, participants experienced mechanical and rendered friction, inertia, and detent dynamics as they turned a haptic knob towards graphical targets of two different widths and amplitudes. Together, this process and user study provide novel affect-and performance-based design guidance to developers of physical controls for emerging ubiquitous computing environments. Our work bridges extensive human factors work in mechanical systems that peaked in the 1960's, to contemporary trends, with a goal of integrating mechatronic controls into emerging ubiquitous computing systems.
Designers of human-computer interfaces often overlook issues of affect. An example illustrating t... more Designers of human-computer interfaces often overlook issues of affect. An example illustrating the importance of affective design is the frustration many of us feel when working with a poorly designed computing device.
We describe key affordances required by tools for developing haptic behaviors. Haptic icon design... more We describe key affordances required by tools for developing haptic behaviors. Haptic icon design involves the envisioning, expression and iterative modification of haptic behavior representations. These behaviors are then rendered on a haptic device. For example, a sinusoidal force vs. position representation rendered on a haptic knob would produce the feeling of detents. Our contribution is twofold. We introduce a custom haptic icon prototyper that includes novel interaction features, and we then use the lessons learnt from its development plus our experiences with a variety of haptic devices to present and argue high-level design choices for such prototyping tools in general.
IEEE Transactions on Haptics, 2009
acceptance by K. Kahol, V. Hayward, and S. Brewster. For information on obtaining reprints of thi... more acceptance by K. Kahol, V. Hayward, and S. Brewster. For information on obtaining reprints of this article, please send e-mail to: [email protected], and reference IEEECS Log Number
We present a novel experimental apparatus for the capture and replay of physical controls (mechan... more We present a novel experimental apparatus for the capture and replay of physical controls (mechanical knobs), as well as a set of acquired models and a design discussion related to the characterization approach taken here. Our work extends existing research by addressing problems surrounding identification of physical controls, including sensor gripping techniques for arbitrary target devices; and improved hardware and algorithm combinations for finer capture resolutions. Models were acquired from 5 real knobs, based on 2 nd order model fits to torque and kinematic results of swept-sine excitations.
We describe key affordances required by tools for developing haptic behaviors. Haptic icon design... more We describe key affordances required by tools for developing haptic behaviors. Haptic icon design involves the envisioning, expression and iterative modification of haptic behavior representations. These behaviors are then rendered on a haptic device. For example, a sinusoidal force vs. position representation rendered on a haptic knob would produce the feeling of detents. Our contribution is twofold. We introduce a
Physical controls such as knobs, sliders, and buttons are experiencing a revival as many computin... more Physical controls such as knobs, sliders, and buttons are experiencing a revival as many computing systems progress from personal computing architectures towards ubiquitous computing architectures. We demonstrate a process for measuring and comparing visceral emotional responses of a physical control to performance results of a target acquisition task. In our user study, participants experienced mechanical and rendered friction, inertia, and detent dynamics as they turned a haptic knob towards graphical targets of two different widths and amplitudes. Together, this process and user study provide novel affect-and performance-based design guidance to developers of physical controls for emerging ubiquitous computing environments. Our work bridges extensive human factors work in mechanical systems that peaked in the 1960's, to contemporary trends, with a goal of integrating mechatronic controls into emerging ubiquitous computing systems.
Designers of human-computer interfaces often overlook issues of affect. An example illustrating t... more Designers of human-computer interfaces often overlook issues of affect. An example illustrating the importance of affective design is the frustration many of us feel when working with a poorly designed computing device.
We describe key affordances required by tools for developing haptic behaviors. Haptic icon design... more We describe key affordances required by tools for developing haptic behaviors. Haptic icon design involves the envisioning, expression and iterative modification of haptic behavior representations. These behaviors are then rendered on a haptic device. For example, a sinusoidal force vs. position representation rendered on a haptic knob would produce the feeling of detents. Our contribution is twofold. We introduce a custom haptic icon prototyper that includes novel interaction features, and we then use the lessons learnt from its development plus our experiences with a variety of haptic devices to present and argue high-level design choices for such prototyping tools in general.
IEEE Transactions on Haptics, 2009
acceptance by K. Kahol, V. Hayward, and S. Brewster. For information on obtaining reprints of thi... more acceptance by K. Kahol, V. Hayward, and S. Brewster. For information on obtaining reprints of this article, please send e-mail to: [email protected], and reference IEEECS Log Number
We present a novel experimental apparatus for the capture and replay of physical controls (mechan... more We present a novel experimental apparatus for the capture and replay of physical controls (mechanical knobs), as well as a set of acquired models and a design discussion related to the characterization approach taken here. Our work extends existing research by addressing problems surrounding identification of physical controls, including sensor gripping techniques for arbitrary target devices; and improved hardware and algorithm combinations for finer capture resolutions. Models were acquired from 5 real knobs, based on 2 nd order model fits to torque and kinematic results of swept-sine excitations.
We describe key affordances required by tools for developing haptic behaviors. Haptic icon design... more We describe key affordances required by tools for developing haptic behaviors. Haptic icon design involves the envisioning, expression and iterative modification of haptic behavior representations. These behaviors are then rendered on a haptic device. For example, a sinusoidal force vs. position representation rendered on a haptic knob would produce the feeling of detents. Our contribution is twofold. We introduce a
The study of surgeons' eye movements is an innovative way of assessing skill and situation awaren... more The study of surgeons' eye movements is an innovative way of assessing skill and situation awareness, in that a comparison of eye movement strategies between expert surgeons and novices may show differences that can be used in training.
American Journal of Surgery, 2011
OBJECTIVE: Surgeons' vigilance regarding patient condition was assessed using eye-tracking techni... more OBJECTIVE: Surgeons' vigilance regarding patient condition was assessed using eye-tracking techniques during a simulated laparoscopic procedure.
We describe a simple technique for accurately calibrating the temporal lag in augmented and virtu... more We describe a simple technique for accurately calibrating the temporal lag in augmented and virtual environments within the Enhanced Virtual Hand Lab (EVHL), a collection of hardware and software to support research on goal-directed human hand motion. Lag is the sum of various delays in the data pipeline associated with sensing, processing, and displaying information from the physical world to produce an augmented or virtual world. Our main calibration technique uses a modified phonograph turntable to provide easily tracked periodic motion, reminiscent of the pendulum-based calibration technique of Liang, Shaw and Green. Measurements show a three-frame (50 ms) lag for the EVHL. A second technique, which uses a specialized analog sensor that is part of the EVHL, provides a "closed loop" calibration capable of sub-frame accuracy. Knowing the lag to sub-frame accuracy enables a predictive tracking scheme to compensate for the end-toend lag in the data pipeline. We describe both techniques and the EVHL environment in which they are used.
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Papers by Colin Swindells