With regard to the design of visual feedback the empirical findings allow to derive recommendations for the design of absolute user interaction. With respect to the scaling of the interaction environment the findings suggest, that an (unexpected) change of the scaling of the display or touchpad can lead to losses in the efficiency of the interaction. Fitts’ Law was employed as the main theoretical framework to assess sensorimotor performance of the users. Four experiments were conducted to assess a) how users can cope with unexpected changes in the scaling of the display and touchpad area, b) how sensorimotor transformations can be supported by visual feedback, c) to what extent alternative interaction concepts may surpass the limits of absolute touchpad interaction and d) potential effects of aging on interaction design. the absolute finger position on the touchpad area is represented at the corresponding cursor position on the display area. In such configurations touchpad and display area are directly mapped, viz. The main focus was on absolute touchpad interaction. ![]() The purpose of this thesis was to explore user interaction with in vehicle information systems (IVIS) during driving and the influence of the interaction design on users’ performance. Finally, we present a prototype implementation and a qualitative evaluation. ![]() This, on one hand, allows for providing content of appropriate length, on the other hand, for directing the attention of the driver back to-wards the street at the right time. We then introduce an algorithm, which is capable of learning standing times in front of traffic lights based on GPS information only. In this paper we report on a web survey assessing which forms of entertainment and which types of content are considered to be useful for in-car entertainment by drivers. An observation of the prevailing forms of entertainment in the car reveals that content such as text, videos, or games are often a mere adaptation of content produced for television, public displays, PCs, or mobile phones and do not adapt to the situation in the car. At the same time, the urbanization caused a massive increase of traffic volume, which led to people spending an ever-increasing amount of their time in front of red traffic lights. Hence, the variety of entertainment in the car increases, and many vehicles are already equipped with displays, allowing for watching news, videos, accessing the Internet, or playing games. People spend a significant amount of time in their cars (US: 86 minutes/day, Europe: 43 minutes/day) while commuting, shopping, or traveling. However, the results also indicated that, depending on the type of tasks, the different control modes did not have the same efficiency. Assessment criteria were speed, distance to the target vehicle, lane position, visual activity, action on the system, operating time, error rate and post trial questionnaire.īased on these criteria, the results showed that browsing while driving seems to remain both complicated and dangerous even when using a simplified browser. ![]() In the qualitative part, subjects used the in-vehicle web service in a realistic scenario and were allowed to choose the control devices they wanted (voice, touchpad or keyboard). In the quantitative part of the experiment, subjects performed tasks such as writing names, selecting items and moving a cursor on a map, using the keyboard or the touchpad. Twenty seven subjects aged from 26 to 69 years carried out this experiment while performing a car-following task they manipulated an in-car web site by using three control devices: a keyboard, a touchpad, and a voice command. An experiment on the usability assessment of various control interfaces of an in-vehicle Internet browser, was carried out on the Renault driving simulator with a fictional web site that offers services such as: district map, route planning, electronic messaging, leisure programs, and phone directory.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |