5 research outputs found
Towards the design of effective freehand gestural interaction for interactive TV
As interactive devices become pervasive, people are beginning to look for more advanced interaction with televisions in the living room. Interactive television has the potential to offer a very engaging experience. But most common user tasks are still challenging with such systems, such as menu selection or text input, and little work has been done on understanding and supporting the effective design of freehand interaction with a TV in the domestic environment. In this paper, we report two studies investigating freehand gestural interaction with a consumer level sensor that is suitable for TV use scenarios. In the first study, we investigate a range of design factors for tiled layout menu selection, including wearable feedback, push gesture depth, target size and position in motor space. The results show that tactile and audio feedback have no significant effect on user performance and preference, and these results inform potential designs for high selection performance. In the second study, we investigate using freehand gestures for the common TV user task of text input. We design and evaluate two virtual keyboard layouts and three freehand selection methods. Results show that ease of use and error tolerance can both be achieved using a text entry method utilizing a dual circle layout and an expanding target selection technique. Finally, we propose design guidelines for effective, usable and comfortable freehand gestural interaction for interactive TV based on the findings.</p
Towards the design of effective freehand gestural interaction for interactive TV
As interactive devices become pervasive, people are beginning to looking for
more advanced interaction with televisions in the living room. Interactive
television has the potential to offer a very engaging experience. But most
common user tasks are still challenging with such systems, such as menu
selection or text input. And little work has been done on understanding and
sup-porting the effective design of freehand interaction with an TV in the
living room. In this paper, we perform two studies investi-gating freehand
gestural interaction with a consumer level sensor, which is suitable for TV
scenarios. In the first study, we inves-tigate a range of design factors for
tiled layout menu selection, including wearable feedback, push gesture depth,
target size and position in motor space. The results show that tactile and
audio feedback have no significant effect on performance and prefer-ence, and
these results inform potential designs for high selection performance. In the
second study, we investigate a common TV user task of text input using freehand
gesture. We design and evaluate two virtual keyboard layouts and three freehand
selec-tion methods. Results show that ease of use and error tolerance can be
both achieved using a text entry method utilizing a dual circle layout and an
expanding target selection technique. Finally, we propose design guidelines for
effective, usable and com-fortable freehand gestural interaction for
interactive TV based on the findings.Comment: Preprint version of our paper accepted by Journal of Intelligent and
Fuzzy System
Automatic Structural Scene Digitalization
In this paper, we present an automatic system for the analysis and labeling
of structural scenes, floor plan drawings in Computer-aided Design (CAD)
format. The proposed system applies a fusion strategy to detect and recognize
various components of CAD floor plans, such as walls, doors, windows and other
ambiguous assets. Technically, a general rule-based filter parsing method is
fist adopted to extract effective information from the original floor plan.
Then, an image-processing based recovery method is employed to correct
information extracted in the first step. Our proposed method is fully automatic
and real-time. Such analysis system provides high accuracy and is also
evaluated on a public website that, on average, archives more than ten
thousands effective uses per day and reaches a relatively high satisfaction
rate.Comment: paper submitted to PloS On