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Following previous series on Looking at People (LAP) challenges [6, 5, 4], ChaLearn ran two competitions to be presented at CVPR 2015: action/interaction spotting and cultural event recognition in RGB data. We ran a second round on human activity recognition on RGB data sequences. In terms of cultural event recognition, tens of categories have to be recognized. This involves scene understanding and...
In general, human beings receive most part of information through eyesight. Therefore, light is an essential element which allows people to distinguish the shape, colour and perspective of the environment around them. Moreover, energy efficiency in buildings is a problem that is being widely analysed since energy consumption inside them represents approximately 40% of total world energy consumption...
We propose a system that augments touch input with visual understanding of the user to improve interaction with a large touch-sensitive display. A commodity color plus depth sensor such as Microsoft Kinect adds the visual modality and enables new interactions beyond touch. Through visual analysis, the system understands where the user is, who the user is, and what the user is doing even before the...
Increasingly large amounts of video data raise the question if large-scale face retrieval is feasible. To find fast and accurate matching strategies, an according face track descriptor is constructed by using local features, extended by an encoding of the respective measurement conditions. The feature encoding allows collecting all features of one face track together in a single feature set, where...
Preserving continuity between individual exploration steps in a process of multimedia exploration is a concept of natural intuition that sometimes decides if a particular exploration system is usable or not. One of ways how to emulate the continuity of the exploration process is adding some sort of granularity into this process. Then anyone who uses such system can explore particular areas in less...
This paper introduces a novel zooming interface deploying a pico projector that, instead of a second visual display, leverages audioscapes for contextual information. The technique enhances current flashlight metaphor approaches, supporting flexible usage within the domain of spatial augmented reality to focus on object or environment-related details. Within a user study we focused on quantifying...
Building a visual summary from an egocentric photostream captured by a lifelogging wearable camera is of high interest for different applications (e.g. memory reinforcement). In this paper, we propose a new summarization method based on keyframes selection that uses visual features extracted by means of a convolutional neural network. Our method applies an unsupervised clustering for dividing the...
This work is about the in-process visualization of multi-dimensional datasets recorded by compressed event-driven energy metering methods. The main goal of this work is to provide easy visual form to better understand energy transformations caused by real-life processes.
This paper analyses the performance of synchronously rotating onshore wind turbines. Variable-speed variable-pitch wind turbines are considered. The reason for synchronization of wind turbines is visual impact. Therefore, synchronization is performed during the day, while at night wind turbines operate at their normal operating mode. Wind farm of nine wind turbines is analysed in order to determine...
Wearable finger-based haptics with cutaneous feedback is promising, as it allows us to duplicate many real-world rich/important tasks that are relying on the dexterity of fingers and hands in the virtual-world. For this system, one of the key challenges is the finger-tracking, which can of course never be perfect, yet, if used in VR (e.g., with HMD), would still be adequate as long as its tracking...
Haptic media, as a third type of 3D media besides 3D visual and 3D audio, is essential to realize the true 3D multimedia. Recently, pseudo-haptics has gained considerable attention since it can produce a haptic feeling without specific hardware. We first categorized pseudo-haptics into three types based on perception phases and virtual hand form. A series of experiments quantitatively proved that...
This paper presents CultureCam, an online tool tailored for creative designers and artists, which offers the possibility of exploring and accessing Europeana image content in an interactive and intuitive way. By using a webcam to take a photo of any object or texture, users can invoke the CultureCam tool for accessing a set of images that are similar in color, shape or pattern. The tool stimulates...
In developed countries, sedentary lifestyle is a major health risk factor. In elderly people, such mobility limitation is worsened by the reduced self-confidence and the fear of falling, leading to a further motor deterioration. This work presents an application of a wireless Body Sensor Network as a simple and easy-to-use individual motor function assessment tool for elderly. The wearable nodes have...
The photovoltaic (PV) industry is expanding rapidly to meet the growing renewable-energy demands globally. The failure-rate analysis indicated that a large portion of the accelerated PV module qualification failures was related to the failure of the cell itself, which was leading to the yield loss of cells during shipping. Therefore, damaged cell or module caused by shipping is always one of the serious...
The role of WMS (Web Map Service) and WFS (Web Feature Service) in geo-data interoperation and exchange has been long recognized, especially in domain WebGIS platforms. Up to now, most research and applications on geo-data visualization are focused on static WMS layers or vector layers retrieved from WFS separately. In this paper, instead, we take POI (Point of Interest) data of address as an example...
The visual representation of software data structures is especially relevant to the creation of games which crowd source science problems to a gaming community and to educational games which seek to teach computer science concepts within the context of computer games. Xylem: The Code of Plants is a game designed to crowd source formal software verification via loop invariant specifications. Due to...
High spatial resolution satellite imagery has become an important source of information for geospatial applications. Automatic segmentation of high-resolution satellite imagery is useful for obtaining more timely and accurate information. In this paper we introduce a new approach for automatic image segmentation into different regions (corresponding to various features of texture, intensity, and color)...
In robotics applications such as SLAM (Simultaneous Localization and Mapping), loop closure detection is an integral component required to build a consistent topological or metric map. This paper presents an appearance based loop closure detection mechanism titled ‘IBuILD’ (Incremental bag of BInary words for Appearance based Loop closure Detection). The presented approach focuses on an online, incremental...
As robots continue to create long-term maps, the amount of information that they need to handle increases over time. In terms of place recognition, this implies that the number of images being considered may increase until exceeding the computational resources of the robot. In this paper we consider a scenario where, given multiple independent large maps, possibly from different cities or locations,...
Many data-intensive algorithms -- particularly in visualization, image processing, and data analysis -- operate on structured data, that is, data organized in multidimensional arrays. While many of these algorithms are quite numerically intensive, by and large, their performance is limited by the cost of memory accesses. As we move towards the exascale regime of computing, one central research challenge...
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