Vom Internet der Computer zum Internet der Dinge

Zusammenfassung: Der Beitrag diskutiert die Vision, die informationstechnischen Grundlagen und Herausforderungen sowie die Anwendungsmöglichkeiten eines ,,Internet der Dinge". Ferner wird auf informatikbezogene Aspekte wie RFID und die Realisierung von IP-Stacks und Webservern für smarte Alltagsgegenstände eingegangen. In einem Ausblick werden auch einige gesellschaftliche und politische Fragen angesprochen, die mit einem Internet der Dinge auf uns zukomme

Blur-resistant joint 1D and 2D barcode localization for smartphones

With the proliferation of built-in cameras barcode scanning on smartphones has become widespread in both consumer and enterprise domains. To avoid making the user precisely align the barcode at a dedicated position and angle in the camera image, barcode localization algorithms are necessary that quickly scan the image for possible barcode locations and pass those to the actual barcode decoder. In this paper, we present a barcode localization approach that is orientation, scale, and symbology (1D and 2D) invariant and shows better blur invariance than existing approaches while it operates in real time on a smartphone. Previous approaches focused on selected aspects such as orientation invariance and speed for 1D codes or scale invariance for 2D codes. Our combined method relies on the structure matrix and the saturation from the HSV color system. The comparison with three other real-time barcode localization algorithms shows that our approach outperforms the state of the art with respect to symbology and blur invariance at the expense of a reduced speed

The Smart Box application model

This paper proposes the usage of a software framework, based on the Smart Box application model, for the development of applications or appliances of the Smart Box application domain. This class of ubiquitous computing applications can be described as automatic content monitoring applications using Auto-ID technologies such as Radio Frequency Identification (RFID). The Smart Box application model is based on the concepts of location and object to represent a kind of a box and the items and persons that are related to the box. States defined through conditions abstract from the content of the box and limit notification of the application to exceptional cases. Implementing the model and framework we could show that the model is adequate to describe the Smart Box application domain and that the framework decreases the development effort of Smart Box applications. 1

C.: Toolkit for Bar Code Recognition and Resolving on Camera

Abstract: Automatic identification technology such as RFID promises to connect physical objects with virtual representations or even computational capabilities. However, even though RFID tags are continuously falling in price, their widespread use on consumer items is still several years away, rendering large-scale experiments with such an “internet of things ” difficult. Much more ubiquitous are printed bar codes, yet so far their recognition required either specialized scanner equipment, custom-tailored bar codes or costly commercial licenses – all equally significant deployment hurdles. We have developed a freely available EAN-13 bar code recognition and information system that is both lightweight and fast enough for the use on camera-equipped mobile phones, thus significantly lowering the barrier for large-scale, real-world testing of novel information and interaction applications based on “connected ” physical objects. We hope that this “low tech ” version of bridging the gap will allow the community to quickly develop and try out more realistic and widespread applications, and thus gain real-world experiences for better jump-starting the future internet of things, today. 1 Today’s Role of Barcode Recognitio