Steganography is a method of communication which hides the existence of the communication from a third *** employment of steganographic techniques depends on various demands, which will be derived and considered. This...
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ROSE is an experimental database system for CAD/CAM applications that organizes a database into entries and relationships. The data model of ROSE is an extension of the relational model and the data manipulation langu...
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In this paper, we present optic flow algorithms which are based on a variety of increasingly sophisticated data terms. Such data terms allow to better identify correspondences between points in either image than the t...
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ISBN:
(纸本)9783980487481
In this paper, we present optic flow algorithms which are based on a variety of increasingly sophisticated data terms. Such data terms allow to better identify correspondences between points in either image than the traditional intensity difference since they characterize the local image structure more uniquely. We present an algorithmic framework which allows to directly incorporate arbitrary data terms: In contrast to traditional approaches the minimization scheme is not based on local linearization. In particular, we quantitatively compare the classical intensity similarity with nonconvex truncated data terms, with a patch-based intensity difference and with a patch-based normalized cross correlation. Experiments demonstrate that at the expense of additional runtime more advanced data terms may help to improve flow estimates.
In this paper we present an approach to the analysis of the contribution of a small subregion in a dataset to the global flow. To this purpose, we subtract the potential flow that is induced by the boundary of the sub...
Three-dimensional models of urban environments have great appeal and offer promises of interesting applications. While initially it was of interest to just have such 3D data, it increasingly becomes evident that one r...
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Three-dimensional models of urban environments have great appeal and offer promises of interesting applications. While initially it was of interest to just have such 3D data, it increasingly becomes evident that one really would like to have interpreted urban objects. To be able to interpret buildings we have to split a visible whole building block into its different single buildings. Usually this is done using cadastral information to divide the single land parcels. The problem in this case is that sometimes the building boundaries derived from the cadastre are insufficiently accurate due to several reasons like old databases with lower accuracies or inaccuracies due to transformation between two coordinate systems. For this reason it can happen that a cadastral boundary coming from an old map is displaced by up to several meters and therefore divides two buildings incorrectly. To overcome such problems we incorporate the information from vertical aerial images. We introduce a façade separation method that is able to find individual building façades using multi view stereo. The purpose is to identify the individual façades and separate them from one another before on proceeds with the analysis of a façade's details. The source was a set of overlapping, thus "redundant" vertical aerial images taken by an UltraCam digital aerial camera. Therefore in a first step we determine the building block outlines using the building classification and use the height values from the Digital Surface Model (DSM) to determine approximate "façade quadrilaterals". We also incorporate height discontinuities using the height profiles along the building outlines to enhance our façade separation. In a next step we detect repeated pattern in these "façade images" and use them to separate the façades respectively building blocks from one another. We show that this method can be successfully used to separate building façades using vertical aerial images with a very high detection rate of 88%
Low-energy carbon Internet of Things (IoT) systems are essential for sustainable development, as they reduce carbon emissions while ensuring efficient device performance. Although classical algorithms manage energy ef...
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In order to support the work of researchers in the production, processing and interpretation of complex digital objects and the dissemination of valuable and diverse information to a broad spectrum of audience there i...
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For planning grasps and other object manipulation actions in complex environments, 3D semantic information becomes crucial. This paper focuses on the application of recent 3D Time-of-Flight (ToF) cameras in the contex...
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Research in intelligent interactive systems can offer valuable assistance to elderly and disabled populations by helping them to achieve greater levels of engagement with the world. Many users find it difficult to use...
ISBN:
(纸本)9781447158356
Research in intelligent interactive systems can offer valuable assistance to elderly and disabled populations by helping them to achieve greater levels of engagement with the world. Many users find it difficult to use existing interaction devices, either for physical or age-related impairments. However, research on intelligent voice recognition, adaptable pointing, browsing and navigation, and affect and gesture recognition can hugely benefit such users. Additionally, systems and services developed for elderly or disabled people often find useful applications for their able-bodied counterparts.A Multimodal End-2-End Approach to Accessible Computing illustrates the state-of-the-art of technology and presents a vision for accessibility in the near future. It considers challenges faced by accessibility practitioners at research institutes, industries and legislative institutions throughout the world, and explores the different phases of delivering accessible products and services through design, development, deployment and maintenance. A collection of eminent researchers cover topics on developing and standardizing user models for inclusive design, adaptable multimodal system development for digital TV and ubiquitous *** a foreword from the BBCs Head of Technology and organiser of the Switchover Help Scheme, and an End Note from the chairman of the ITU-Ts Focus Group on Audiovisual Media Accessibility (presenting a vision for accessible computing), this book will be an invaluable resource for researchers and practitioners.
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