Jutta Willamowski

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We present a novel method for generic visual categorization: the problem of identifying the object content of natural images while generalizing across variations inherent to the object class. This bag of keypoints method is based on vector quantization of affine invariant descriptors of image patches. We propose and compare two alternative implementations(More)
CLF/Mekano is a distributed object infrastructure oriented towards the high-level coordination of coarse grain components. Unlike other infrastructures of the same class, such as CORBA or DCOM, coordination in CLF/Mekano is built-in at the lowest level, namely at the inter-component communication protocol level, and not as a side service (such as the event,(More)
In this paper we present STITCH, a middleware that facilitates the development of ubiquitous user-centric and contextaware applications. These systems are built from distributed components which are highly heterogeneous, covering a large range of hardware configurations, from sensors to computers, and with software ranging from embedded software with small(More)
Nowadays people have to deal with an increasing amount of information contained in electronic documents available from numerous heterogeneous, widely distributed sources. Keeping up to date with recently published material relevant to a particular topic has become a challenge in itself. The Yaka system aims at facilitating this task by providing(More)
This paper describes how achieving consistent colour reproduction across different devices is a complicated matter. Although there is a technological infrastructure for managing colour across devices this is very rarely used as intended. This infrastructure has been created by modelling the problem of colour management as a wholly technical one. In this(More)
This paper describes an experimental setup to help people who make extensive use of paper documents to manage these documents in ways that have previously only been possible with electronic documents. In particular, the paper documents and dossiers are automatically linked to their electronic counter parts and user actions are tracked in such a way that a(More)
Information brokerage systems support distributed information gathering for data collections stored within the World Wide Web or for other on-line data repositories. These systems present a unified face of the underlying heterogeneity, both in terms of the access/search protocols and in terms of the data schemata. Typically, the user may input some values(More)