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Finding correspondences between image pairs is a fundamental task in computer vision. Herein, we focus on establishing matches between images of urban scenes which are typically composed of planar surface patches with highly repetitive structures. The latter property makes traditional point-based methods unreliable. The basic idea of our approach is to formulate the correspondence problem in terms...
The expected increase of the traffic volume in mobile broadband networks and the upcoming spectrum scarcity, require an optimization of the usage of the spectrum. One of the solutions is Authorised/Licensed Shared Access (ASA/LSA)1, a new regulatory concept that allows license holders (incumbents) to share spectrum with other service providers, under well-defined conditions, unlocking additional bands...
Due to the limited of precision, navigation technology in the local area cannot accurately locate each building and obtain the functions related to the building. This paper investigates augmented reality and navigation technologies and realizes the campus internal navigation on a mobile phone. In the campus, the exact position and detail data of every school can be obtained by using the augmented...
This paper proposes a method for determining the location of a mobile client using a data fusion of localization results based on wireless LAN signals and 3-D camera-image sequences in large structures, such as factory buildings, plants, and public spaces. Data pertaining to the physical location of personal electronic devices or mobile robots are important for information services and robotic applications...
The success of smart phone technologies changed the way information is processed as more and more geo-referenced structures are emerging linking information to specific locations within our environment. Thereby, Augmented Reality has become a key technology as it analyses the smart phone sensor data (camera, GPS, inertial) to derive the detailed pose of the smart phone, with the aim to correlate our...
In this paper, we present a mobile collaborative outdoor augmented reality system. The system will provide a user who captures image of a building facade with related introduction. The proposed system mainly consists of two major parts - annotation module and AR browsing module. Annotation module works with existing standards and linked data to allow users create annotations of the building. Annotation...
We present an interaction technique that integrates spatial sensing to an interactive 3D city model in order to support efficient localization of objects (esp. buildings) known or remembered in the real world. The technique offers a unified 3D interaction scheme for both visible and remote objects. In the egocentric view, sensor data from the mobile device (accelometer, gyroscope, GPS) is utilized...
We describe an augmented reality prototype for exploring a 3D urban environment on mobile devices. Our system utilizes the location and orientation sensors on the mobile platform as well as computer vision techniques to register the live view of the device with the 3D urban data. In particular, the system recognizes the buildings in the live video, tracks the camera pose, and augments the video with...
The task of vision based people tracking is a major research problem in the context of surveillance applications or human behavior estimation, but it has had only minimal impact on (Ubiquitous) Augmented Reality applications thus far. Deploying stationary infrastructural cameras within indoor environments for the purpose of Augmented Reality could provide a users' devices with additional functionality...
The security of a complex site is strongly dependent on the use of integrated technological systems. Any weakness of the integrated system involves a weakness of the security of the site itself. For this reason it is necessary to design and realize highly integrated, efficient and reliable security systems. The authors illustrate the work made to design and realize the integrated security system of...
In this paper, we propose Simple Frame Marker (SFM) which has a rectangular frame and encompasses a planar natural view such as characters, logos and images. In order to support recognition of characters as well as an image, Simple Frame Marker is constructed by square-type and rectangle-type markers. Therefore Simple Frame Marker first distinguishes its content by the marker type and applies a proper...
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