This paper presents a roadmap for the transition from current gadget-centric digital services towards a gadget-free services environment called the Naked world. The main idea of the Naked world is that all the services which are currently provided by gadgets will be provided by the infrastructure, thus no gadgets will be needed to use any kind of digital services. When a user in the Naked world intends to use a service, the infrastructure senses the user, the nearby intelligent surrounding launches an interactive user interface, performs identification through biometric identities, provides the service, and then closes the session when the user finishes the job. Therefore, the Naked world comprises highly intelligent and context-aware interactive environments. The vision of the Naked world is an evolution towards a user-friendly and ubiquitously available digital services, which is naturally bounded by the technological advancement. Henceforth, this paper presents the essential technologies and functional requirements along with the current and forthcoming novel technological concepts and challenges for the realization of the Naked world.
In this paper, a gesture-based control system for smart lighting management is introduced. The system consists of multiple depth camera sensors that track the users’ positions, movements and gestures in real-time and forward the data to the main computer where the lighting control commands are generated. The implementation was built into the ‘ResponseRoom’ R&D environment, where two different lighting controls in a real-time installation were validated with the ability to dim and control colour by hand gestures. In order to study end user preference and to discover needs and guidelines for future development of the system, a user survey on gesture-based lighting control in a meeting room application was carried out. In the survey, no predetermined gesture vocabulary or real lighting control implementation were used. Instead, the respondents could freely develop their own gesture commands. Altogether 197 gained responses are analysed. The results reveal that generally intuitive control gestures are difficult to generate as there is a rather strong variability in personal preferences. The most popular gestures in the user survey were used by 25–30% of the respondents, 19% of all user responses in the test were multimodal combinations of different gestures, verbal expressions and sounds.
The unobtrusive methods to monitor and track people behaviour are getting more common. At the same time novel lighting control and the LED technologies allow dynamic real-time controlling of the illumination systems. This progress will support the development of implicit interaction between humans and lighting systems. In this paper, we describe the results of our study on how to create a situation-aware real-time light control system that adapts automatically to person behaviour in ambient space. In future this approach could be used e.g. for guiding visitors in public places or promoting new products. We have implemented a proof-of-concept application -a Treasure Hunt game -by using a depth sensor based people tracking service, wirelessly controlled RGB LEDs and a light controlling unit where the LED bulbs change their colour according to person position and movement in a room.
The research goal has been synchronizing the process of asphalt production, asphalt transportation and pavement laying by connecting different machines together using wireless technologies. Sensors and GPS positioning units were installed to the machines for measuring process variables (e.g. mass temperature) and detecting events (e.g. loading, unloading). The first prototype system (autumn 2007) was based on embedded wireless measurement and data collection modules. A more recent system uses a vehicle PC and a separate embedded system module with sensor interfaces and a short-range radio transmitter. Vehicles communicate with the database through a GPRS link and use a short-range radio as an RFID for authentication and a direct communication channel with the other vehicles. GPS position information is used for context recognition together with the short-range radio and sensor information. Process information is continuously stored to a database, to be used for quality control and process optimization.
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