\author{\Large Thomas Pietrzak}\r
\date{}\r
\r
-\includeonly{tex/0-titre,tex/3-input}\r
+\includeonly{tex/0-titre,tex/2-output,tex/3-input}\r
\r
\begin{document}\r
\r
{\LARGE\bfseries Forging digital hammers: the design and engineering of empowering interaction techniques and devices}
\vspace*{\stretch{2}}
- XXX 2021
+ XXX 2022
\vspace*{\stretch{2}}
\end{centering}
To do so, we present the haptic pipeline that illustrates the hardware and software parts of both interactive systems and users.
First it shows the diversity of disciplines involved in the design and implementation of haptic systems
Second, it reveals pitfalls that potentially alter the message transmitted to users through touch at every stage of the pipeline.
-We present the main general research questions that guided my research.
-Finally we illustrate these research questions with several research projects.
+We present the main general research questions that guided my research: the output vocabulary, the engineering and evaluation of haptic devices, the haptic properties of physical objects, and the use of tangible ofbjects for haptic interaction.
+We illustrate these research questions with several research projects: vibrotactile Tactons for activity monitoring, tactile textures with programmable friction, printed vibrotactile widgets, and actuated computer peripherals.
\end{Abstract}
Haptics is generally seen as an output modality, and most haptic systems are designed for providing \emph{haptic feedback}.
%Can people notice and interpret correctly information when they do not expect the tactile cues?
-\subsubsection{Discussion and Conclusion}
+\subsubsection{Discussion}
Participants identified the patterns with high accuracy both in the laboratory (96\%) and in-situ (89\%).
We note that in the longitudinal study, the patterns were presented in random order.
%This limitation did not have a particular effect on our results. It could be an issue for a realistic simulation of physical textures. In our case we do not require a realistic sensation.
-\subsection{Vibrotactile widgets}
+\subsection{Printed vibrotactile widgets}
\label{sec:printgets}
In the previous section, we investigated the output vocabulary for a new device providing a new type of haptic feedback.
%Leverages vibrotactile feedback for touch surfaces.
-\subsubsection{Discussion and conclusion}
+\subsubsection{Discussion}
This work required interdisciplinary skills and knowledge to put together existing building blocks to design a whole system.
This is what I consider a strength of Human-Computer Interaction research, at least the way I practice it.
The user has no control over the devices in this situation.
-\subsubsection{Discussion and conclusion}
+\subsubsection{Discussion}
This work on actuated devices is indeed different from projects discussed in the previous sections.
The previous projects followed the typical view on haptic, which we commonly designate as “haptic feedback”.
\epigraph{The true delight is in the finding out rather than in the knowing.}{Isaac Asimov}
\begin{Abstract}
-\loremipsum
+After considering haptics as the sense of touch, we discuss here haptics as the human ability to tough and manipulate the environments and the objects it contains.
+We present the motor sensing pipeline that is the mirror of the haptic rendering pipeline discussed in the previous chapter.
+It reveals the research questions I addressed in my research: the sensing and interpretation of the users' gestures, the input vocabulary, and the design of interaction techniques for unnatural actions.
+Then I discuss four contributions: a system latency measurement methodology and tool, flexion as a new degree of freedom for pen interaction, finger identification as a new property of multi-touch interaction, and interaction techniques in virtual reality.
\end{Abstract}
% The common description of our world is geometric.
Instead of presenting the research below the way it was described in research papers, I will focus on hindsight and how these contributions influenced my research.
-\subsection{Input latency measurement}
+\subsection{System latency measurement}
\label{sec:lagmeter}
The first contribution I will present is not an interaction technique or an interactive system.
The choice of the flexible part did not follow a systematic rationale, but rather general design considerations.
The idea was to have a diameter similar to the one of a drawing pen.
It had to be flexible enough to avoid muscle strain, but stiff enough so that users could write and draw conveniently.
-Full-length flexible early prototypes were shown to be inconvenient for precise manipulation.
+Informal pilot studies showed that full-length flexible prototypes were inconvenient for precise manipulation.
+%Full-length flexible early prototypes were shown to be inconvenient for precise manipulation.
Therefore we chose to limit the flexible part to a few centimeters with a rigid part on both sides to keep the benefits of both flexible and rigid pens.
The rigid part between the tip and the flexible part is long enough to enable users to grip the stylus there.
The second series of prototypes, called \emph{HyperBrush}~\cite{guerrero21} (\reffig{fig:penprototypes}, down), used a consumer electronics bend sensor\footnote{\href{https://www.bendlabs.com/}{https://www.bendlabs.com/}}.
It provided more precise and reliable inputs.
-However, the interesting new property of these prototypes was the ability to change the flexural stiffness with interchangeable components.
+However, the interesting new property of these prototypes was the ability to change the flexural stiffness with interchangeable flexible components.
Both the rigid and flexible parts of the pen are 3D printed, and the flexible part is threaded so that it is screwed to the rigid parts.
The end sensor slips inside the 3D-printed stylus.
\end{figure}
-\subsubsection{Flexural stiffness}
+\subsubsection{Evaluations and discussion}
We evaluated the users' ability to control the bending of FlexStylus and compared it to pressure input~\cite{fellion17}.
We found out that the participants of our studies were more precise with the flexible pen than with pressure input.
projects / hdr.git / commitdiff