Searched for: subject%3A%22Image%255C%2Bsegmentation%22
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Xiao, C. (author), Leeuwenburgh, O. (author), Lin, H.X. (author), Heemink, A.W. (author)
article 2021
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Pruim, R.H.R. (author), van Opbroek, A. (author), Kruithof, M.C. (author), den Hollander, R.J.M. (author), Baan, J. (author), van den Broek, S.P. (author), van der Stap, N. (author), Dijk, J. (author)
Automatic detection and tracking of maritime targets in imagery can greatly increase situation awareness on naval vessels. Various methods for detection and tracking have been proposed so far, both for reasoning as well as for learning approaches. Learning approaches have the promise to outperform reasoning approaches. They typically detect...
conference paper 2019
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Heiligers, M.J.C. (author), Huizing, A.G. (author)
conference paper 2018
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van Deventer, M.O. (author), Dufourd, J.C. (author), Oh, S. (author), Lim, S.Y. (author), Lim, Y. (author), Chandramouli, K. (author), Koenen, R. (author)
The proliferation of new capabilities in affordable smart devices capable of capturing, processing, and rendering audiovisual media content triggers a need for coordination and orchestration between these devices and their capabilities and of the content flowing from and to such devices. The upcoming Moving Picture Experts Group (MPEG) Media...
article 2018
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van Leeuwen, C.J. (author), van Huis, J.R. (author), Baan, J. (author)
Wide Area Motion Imagery (WAMI) enables image based surveillance of areas that can cover multiple square kilometers. Interpreting and analyzing information from such sources, becomes increasingly time consuming as more data is added from newly developed methods for information extraction. Captured from a moving Unmanned Aerial Vehicle (UAV), the...
conference paper 2016
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Dijk, J. (author), Schutte, K. (author), Nieuwenhuizen, R.P.J. (author)
Visual and infrared imagery is degraded by turbulence caused by atmospheric conditions. Because the degradation gets worse for longer distances, turbulence especially hampers long range observation. At sea this turbulence affects classification and identification of ships and other objects. State of the art software based processing algorithms...
conference paper 2016
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Toet, A. (author), Hogervorst, M.A. (author)
We introduce a multiscale image fusion scheme based on guided filtering. Guided filtering can effectively reduce noise while preserving detail boundaries. When applied in an iterative mode, guided filtering selectively eliminates small scale details while restoring larger scale edges. The proposed multi-scale image fusion scheme achieves optimal...
conference paper 2016
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Toet, A. (author)
The predictions of 13 computational bottom-up saliency models and a newly introduced Multiscale Contrast Conspicuity (MCC) metric are compared with human visual conspicuity measurements. The agreement between human visual conspicuity estimates and model saliency predictions is quantified through their rank order correlation. The maximum of the...
article 2011
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TNO Industrie en Techniek TNO Defensie en Veiligheid (author), Bovenkamp, E.G.P. (author), Schutte, K. (author)
For many decades attempts to accomplish Automatic Target Recognition have been made using both visual and FLIR camera systems. A recurring problem in these approaches is the segmentation problem, which is the separation between the target and its background. This paper describes an approach to Automatic Target Recognition using a laser gated...
conference paper 2010
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Deiana, D. (author), Yarovoy, A. (author), TNO Defensie en Veiligheid (author)
In this paper a texture feature coding method to be applied to high-resolution 3D radar images in order to improve target detection is developed. An automatic method for image segmentation based on texture features is proposed. The method has been able to automatically detect weak targets which failed to be detected with intensity based...
conference paper 2009
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Griffioen, J. (author), Passier, H.F. (author), Klein, J. (author), TNO Bouw en Ondergrond (author)
Establishment of natural background levels (NBL) for groundwater is commonly performed to serve as reference when assessing the contamination status of groundwater units. We compare various selection methods to establish NBLs using groundwater quality data forfour hydrogeologically different areas in the highly populated and developed...
article 2008
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Rehatschek, H. (author), Sorschag, R. (author), Rettenbacher, B. (author), Zeiner, H. (author), Nioche, J. (author), de Jong, F. (author), Ordelmann, R. (author), van Leeuwen, D. (author), TNO Defensie en Veiligheid (author)
MediaCampaign's scope is on discovering and inter-relating advertisements and campaigns, i.e. to relate advertisements semantically belonging together, across different countries and different media. The project's main goal is to automate to a large degree the detection and tracking of advertisement campaigns on television, Internet and in the...
conference paper 2008
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TNO Defensie en Veiligheid (author), Toet, A. (author), Wu, T. (author)
We present an algorithm that produces a fused false color representation of a combined multiband IR and visual imaging system for maritime applications. Multispectral IR imaging techniques are increasingly deployed in maritime operations, to detect floating mines or to find small dinghies and swimmers during search and rescue operations. However...
conference paper 2008
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van der Mark, W. (author), van den Heuvel, J.C. (author), Groen, F.C.A. (author), TNO Defensie en Veiligheid (author)
Autonomous robot vehicles that operate in offroad terrain should avoid obstacle hazards. In this paper we present a stereo vision based method that is able to cluster reconstructed terrain points into obstacles by evaluating their relative angles and distances. In our approach, constraints are enforced on these geometric properties by a set of...
conference paper 2007
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Toet, A. (author), TNO Defensie en Veiligheid (author)
We present a method to give single band intensified nightvision imagery a natural day-time color appearance. For input, the method requires a true color RGB source image and a grayscale nightvision target image. The source and target image are both transformed into a perceptually decorrelated color space. In this color space a best matching...
article 2005
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Arlandis, J. (author), Over, P. (author), Kraaij, W. (author), TNO Industrie en Techniek (author)
In this paper, an error analysis based on boundary error popularity (frequency) including semantic boundary categorization is applied in the context of the news story segmentation task from TRECVTD1. Clusters of systems were defined based on the input resources they used including video, audio and automatic speech recognition. A cross-popularity...
conference paper 2005
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Smeaton, A.F. (author), Over, P. (author), Kraaij, W. (author), Technisch Physische Dienst TNO - TH (author)
TRECVID is an annual exercise which encourages research in information retrieval from digital video by providing a large video test collection, uniform scoring procedures, and a forum for organizations interested in comparing their results. TRECVID benchmarking covers both interactive and manual searching by end users, as well as the...
conference paper 2004
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Dekker, R. (author)
conference paper 2000
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TNO Fysisch en Elektronisch Laboratorium (author), Withagen, P.J. (author), Schutte, K. (author), Vossenpoel, A. (author), Breuers, M. (author)
The aim of the research presented in this paper is to find out whether automatic classification of ships from Forward Looking InfraRed (FLIR) images is feasible in maritime patrol aircraft. An image processing system has been developed for this task. It includes iterative shading correction and a top hat filter for the detection of the ship. It...
conference paper 1999
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den Hartog, J. (author), ten Kate, T. (author), Gerbrands, J. (author), Technisch Physische Dienst TNO - TH (author)
In this paper, a knowledge-based framework for the top-down interpretation and segmentation of maps is presented. The interpretation is based on a priori knowledge about map objects, their mutual spatial relationships and potential segmentation problems. To reduce computational costs, a global segmentation is used when possible, but an...
conference paper 1996
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