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The number of interconnected devices around us is constantly growing, and it may become challenging for users to control all these devices when control interfaces are distributed over mechanical elements, apps, and configuration webpages. If devices are even supposed to be connected and work together, this challenge is intensified. An alternative way for configuring and controlling devices in situ...
Many real-life scenarios can benefit from both physical proximity and natural gesture interaction. In this paper, we explore shared collocated interactions on unmodified wearable devices. We introduce an interaction technique which enables a small group of people to interact using natural gestures. The proximity of users and devices is detected through acoustic ranging using inaudible signals, while...
Assistive solutions for a better shopping experience can improve the quality of life of people, in particular also of visually impaired shoppers. We present a system that visually recognizes the fine-grained product classes of items on a shopping list, in shelves images taken with a smartphone in a grocery store. Our system consists of three components: (a) We automatically recognize useful text on...
For the Internet of Things to be adopted in people's homes and at their workplaces, it is important to provide mechanisms that support them when controlling and monitoring smart things in their surroundings. We present the concept of user interface beaming, where the capabilities of different personal wearable computers are combined to allow users to conveniently interact with smart things in their...
The built-in cameras and powerful processors have turned smartphones into ubiquitous barcode scanners. In smartphone-based barcode scanning, barcode localization is an important preprocessing step that quickly scans the entire camera image and passes barcode candidates to the actual decoder. This paper presents the implementation steps of a robust joint 1D and 2D barcode localization algorithm on...
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