534,746 research outputs found

    Research at the learning and vision mobile robotics group 2004-2005

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    Spanish Congress on Informatics (CEDI), 2005, Granada (España)This article presents the current trends on wheeled mobile robotics being pursued at the Learning and Vision Mobile Robotics Group (IRI). It includes an overview of recent results produced in our group in a wide range of areas, including robot localization, color invariance, segmentation, tracking, audio processing and object learning and recognition.This work was supported by projects: 'Supervised learning of industrial scenes by means of an active vision equipped mobile robot.' (J-00063), 'Integration of robust perception, learning, and navigation systems in mobile robotics' (J-0929).Peer Reviewe

    The Practice Of City Planning And Design In The Gulf Region: The Case Of Abu Dhabi, Doha And Manama

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    This research study explores the Arabian Gulf region’s practice of city planning and design in response to the active forces of globalization. The focused scope of analysis is justified by the commonalities that unite the Arabian Gulf region, among them is the active response to globalization and the rapid urbanization process. Following the coverage of the regional context, an investigation of the city planning and design is presented in the study as a case study approach. Three coastal Arabian Gulf capitals -Abu Dhabi, Doha and Manama- are selected as primary units of analysis, investigating their urban evolution, the recent planning practice and urban development vision. The aim of the research study is to establish a theoretical connection between Gulf cities relying on their commonalities. The hypothesis assumes globalization to create a common urban planning practice based on (A) geopolitical facts, (B) historical evolution of urbanism and (C) the recent urban development trends that shape Gulf capital cities. The findings reveal that the urban practice in the Gulf region has been constantly altered in response to global challenges. New trends of megaprojects and international planning are dominating the urban development and growth of Gulf capital cities, where the knowledge of international expertise is flowing into the local planning practice. Therefore, the future of the urbanism is expected to focus on comprehensiveness, master-planning in the national scale, as well as establishing a regional interconnection as a strategic development vision unifying the whole Arabian Gulf region

    Active Citizenship and the Nongovernmental Sector in Slovakia. Trends and Perspectives

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    This study was written by experts from the Institute for Public Affairs (IVO) and the Center for Philanthropy (CpF). The authors map the key milestones, successes and dilemmas of the nongovernmental sector in Slovakia; summarize information on its influence on society and its democratic transformation; mark past and ongoing points of critical importance; identifies possible trends in the sector's development; and lay out a vision for the future that would allow for greater realization of the potential of active citizenship.The report is also available in Slovak on the following page: https://www.ivo.sk/6797/sk/studie/aktivne-obcianstvo-a-mimovladny-sektor-na-slovensku-trendy-a-perspektivy

    Active Citizenship and the Nongovernmental Sector in Slovakia : Trends and Perspectives

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    This study was written by experts from the Institute for Public Affairs (IVO) and the Center for Philanthropy (CpF). The authors map the key milestones, successes and dilemmas of the nongovernmental sector in Slovakia; summarize information on its influence on society and its democratic transformation; mark past and ongoing points of critical importance; identifies possible trends in the sector's development; and lay out a vision for the future that would allow for greater realization of the potential of active citizenship.The report is also available in Slovak on the following page: https://www.ivo.sk/6797/sk/studie/aktivne-obcianstvo-a-mimovladny-sektor-na-slovensku-trendy-a-perspektivy

    Infrared face recognition: a comprehensive review of methodologies and databases

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    Automatic face recognition is an area with immense practical potential which includes a wide range of commercial and law enforcement applications. Hence it is unsurprising that it continues to be one of the most active research areas of computer vision. Even after over three decades of intense research, the state-of-the-art in face recognition continues to improve, benefitting from advances in a range of different research fields such as image processing, pattern recognition, computer graphics, and physiology. Systems based on visible spectrum images, the most researched face recognition modality, have reached a significant level of maturity with some practical success. However, they continue to face challenges in the presence of illumination, pose and expression changes, as well as facial disguises, all of which can significantly decrease recognition accuracy. Amongst various approaches which have been proposed in an attempt to overcome these limitations, the use of infrared (IR) imaging has emerged as a particularly promising research direction. This paper presents a comprehensive and timely review of the literature on this subject. Our key contributions are: (i) a summary of the inherent properties of infrared imaging which makes this modality promising in the context of face recognition, (ii) a systematic review of the most influential approaches, with a focus on emerging common trends as well as key differences between alternative methodologies, (iii) a description of the main databases of infrared facial images available to the researcher, and lastly (iv) a discussion of the most promising avenues for future research.Comment: Pattern Recognition, 2014. arXiv admin note: substantial text overlap with arXiv:1306.160

    Outdoor sports and active tourism company management in Cordoba (southern Spain): An empirical study on the perception and behavior of supply

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    This paper analyzes the perception and behavior of active tourism companies that provide outdoor physical sports activities in emerging tourist destinations in Cordoba, an inland province of southern Spain. The active tourism supply of registered businesses was analyzed using fieldwork data and more than 30 variables including training and qualification of human resources, business vision of demand, marketing and promotion strategies, and perceptions of supply trends. To this end, a quantitative-qualitative empirical study was performed together with in-depth interviews of key stakeholders. Official registry sources were also used to complement the data. The results show a fragmented network of micro-SMEs that are functionally isolated from the rest of the tourism supply and display an intuitive and poor market-oriented behavior due to the inadequate management of their client portfolio. Such management models make it difficult for these businesses to take advantage of key strategic assets to increase profitability and achieve a competitive and sustainable advantage

    On Real-Time Synthetic Primate Vision

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    The primate vision system exhibits numerous capabilities. Some important basic visual competencies include: 1) a consistent representation of visual space across eye movements; 2) egocentric spatial perception; 3) coordinated stereo fixation upon and pursuit of dynamic objects; and 4) attentional gaze deployment. We present a synthetic vision system that incorporates these competencies.We hypothesize that similarities between the underlying synthetic system model and that of the primate vision system elicit accordingly similar gaze behaviors. Psychophysical trials were conducted to record human gaze behavior when free-viewing a reproducible, dynamic, 3D scene. Identical trials were conducted with the synthetic system. A statistical comparison of synthetic and human gaze behavior has shown that the two are remarkably similar

    Mapping a multi-sensory identity territory at the early design stage

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    This article presents a kansei design methodology. It is placed at the very beginning of the design process and aims to influence the following steps in order to improve the user's understanding and experiencing of the designed product. The experimentation combines in a subtle way the design thinking approach of learning by doing and the kansei engineering quantitative approach. The research presented is based on the results of a previous study that defined the semantic and emotional scope of future hybrid cars for European using visual stimuli. This kansei design methodology creates and assesses multi-sensory atmospheres is order to provide tangible direction composed of vision, touch, hearing and smell stimuli. From the cognitive and affective responses of the 42 participants we were able to detail 3 directions for future cars interiors that aim to enrich the styling design briefs and to influence the design strategies such as the management of the different grades. The research presented here was supported by the Kansei Design department from Toyota Motor Europe (TME-KD). This collaboration also brought an industrial context to it.SUPPORTED BY TOYOTA EUROP

    Multisensory Congruency as a Mechanism for Attentional Control over Perceptual Selection

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    The neural mechanisms underlying attentional selection of competing neural signals for awareness remains an unresolved issue. We studied attentional selection, using perceptually ambiguous stimuli in a novel multisensory paradigm that combined competing auditory and competing visual stimuli. We demonstrate that the ability to select, and attentively hold, one of the competing alternatives in either sensory modality is greatly enhanced when there is a matching cross-modal stimulus. Intriguingly, this multimodal enhancement of attentional selection seems to require a conscious act of attention, as passively experiencing the multisensory stimuli did not enhance control over the stimulus. We also demonstrate that congruent auditory or tactile information, and combined auditory–tactile information, aids attentional control over competing visual stimuli and visa versa. Our data suggest a functional role for recently found neurons that combine voluntarily initiated attentional functions across sensory modalities. We argue that these units provide a mechanism for structuring multisensory inputs that are then used to selectively modulate early (unimodal) cortical processing, boosting the gain of task-relevant features for willful control over perceptual awareness

    The cybernetic Bayesian brain: from interoceptive inference to sensorimotor contingencies

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    Is there a single principle by which neural operations can account for perception, cognition, action, and even consciousness? A strong candidate is now taking shape in the form of “predictive processing”. On this theory, brains engage in predictive inference on the causes of sensory inputs by continuous minimization of prediction errors or informational “free energy”. Predictive processing can account, supposedly, not only for perception, but also for action and for the essential contribution of the body and environment in structuring sensorimotor interactions. In this paper I draw together some recent developments within predictive processing that involve predictive modelling of internal physiological states (interoceptive inference), and integration with “enactive” and “embodied” approaches to cognitive science (predictive perception of sensorimotor contingencies). The upshot is a development of predictive processing that originates, not in Helmholtzian perception-as-inference, but rather in 20th-century cybernetic principles that emphasized homeostasis and predictive control. This way of thinking leads to (i) a new view of emotion as active interoceptive inference; (ii) a common predictive framework linking experiences of body ownership, emotion, and exteroceptive perception; (iii) distinct interpretations of active inference as involving disruptive and disambiguatory—not just confirmatory—actions to test perceptual hypotheses; (iv) a neurocognitive operationalization of the “mastery of sensorimotor contingencies” (where sensorimotor contingencies reflect the rules governing sensory changes produced by various actions); and (v) an account of the sense of subjective reality of perceptual contents (“perceptual presence”) in terms of the extent to which predictive models encode potential sensorimotor relations (this being “counterfactual richness”). This is rich and varied territory, and surveying its landmarks emphasizes the need for experimental tests of its key contributions
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