Searched for: author%3A%22Schavemaker%2C+J.G.M.%22
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Schavemaker, J.G.M. (author), Spitters, M.M. (author), Koot, G. (author), de Boer, M.H.T. (author)
In this paper we present a simple, novel method to use state-of-the-art image concept detectors and publicly available image search engines to retrieve images for semantically more complex queries from local databases without re-indexing of the database. Our low-key, data- driven method for associative recognition of unknown, or more elaborate,...
conference paper 2015
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Schutte, K. (author), Bouma, H. (author), Schavemaker, J.G.M. (author), Daniele, L.M. (author), Sappelli, M. (author), Koot, G. (author), Eendebak, P.T. (author), Azzopardi, G. (author), Spitters, M.M. (author), de Boer, M.H.T. (author), Kruithof, M.C. (author), Brandt, P. (author)
The number of networked cameras is growing exponentially. Multiple applications in different domains result in an increasing need to search semantically over video sensor data. In this paper, we present the GOOSE demonstrator, which is a real-time general-purpose search engine that allows users to pose natural language queries to retrieve...
conference paper 2015
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Schavemaker, J.G.M. (author), Boertjes, E.M. (author), Koldijk, S.J. (author), Wiertz, L. (author), Verberne, S. (author), Sappelli, M. (author), Kaptein, A.M. (author)
In this contribution1 we present a novel psychological intervention that maps human computer activity to a group feedback device on the basis of a combination of various types of unobtrusive, low-level sensors. The goal is to enable employees to gain insights into their working habits, to reduce stress levels and increase productivity. The...
conference paper 2014
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Holkamp, Y.H. (author), Schavemaker, J.G.M. (author)
Facial expressions are the primary way to show one’s emotional state. Automatic recognition of these cues from video using software allows for various improvements in human-computer interaction, ranging from improved feedback for recommender systems to automatic labeling of movies according to the emotions they induce. A number of affective...
conference paper 2014
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van Gemert, J.C. (author), Schavemaker, J.G.M. (author), Bonenkamp, C.W.B. (author)
Amateur soccer statistics have interesting applications such as providing insights to improve team performance, individual coaching, monitoring team progress and personal or team entertainment. Professional soccer statistics are extracted with labor intensive expensive manual effort which is not realistic for amateur matches. In this paper we...
conference paper 2014
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Schavemaker, J.G.M. (author), Thomas, E.D.R. (author), Havekes, A. (author)
In this contribution we present a method to classify segments of gorilla videos1 in different affective categories. The classification method is trained by crowd sourcing affective annotation. The trained classification then uses video features (computed from the video segments) to classify a new video segment into one of different affective...
conference paper 2014
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Ngo, C.W. (author), Lu, Y.J. (author), Zhang, H. (author), Yao, T. (author), Tan, C.C. (author), Pang, L. (author), de Boer, M.H.T. (author), Schavemaker, J.G.M. (author), Schutte, K. (author), Kraaij, W. (author)
This paper presents an overview and comparative analysis of our systems designed for TRECVID 2014 [1] multimedia event detection (MED) and recounting (MER) tasks, including all sub-tasks for Pre-Specified (PS) event detection, all sub-tasks except 100Ex for Ad-Hoc (AH) event detection, and 010Ex sub-task for both PS and AH event recounting....
conference paper 2014
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Havekes, A. (author), Thomas, E.D.R. (author), Schavemaker, J.G.M. (author)
In this sheet book we present a method to classify segments of gorilla videos in different affective categories. The classification method is trained by crowd sourcing annotation. The trained classification than uses video features (computed from the video segments) to classify a new video segment into different categories: fun, boring, scary,...
public lecture 2013
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Bouma, H. (author), Azzopardi, G. (author), Spitters, M.M. (author), de Wit, J.J. (author), Versloot, C.A. (author), van der Zon, R.W.L. (author), Eendebak, P.T. (author), Baan, J. (author), ten Hove, R.J.M. (author), van Eekeren, A.W.M. (author), ter Haar, F.B. (author), den Hollander, R.J.M. (author), van Huis, R.J. (author), de Boer, M.H.T. (author), van Antwerpen, G. (author), Broekhuijsen, B.J. (author), Daniele, L.M. (author), Brandt, P. (author), Schavemaker, J.G.M. (author), Kraaij, W. (author), Schutte, K. (author)
We describe the TNO system and the evaluation results for TRECVID 2013 Multimedia Event Detection (MED) and instance search (INS) tasks. The MED system consists of a bag-of-word (BOW) approach with spatial tiling that uses low-level static and dynamic visual features, an audio feature and high-level concepts. Automatic speech recognition (ASR)...
conference paper 2013
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van Erp, J.B.F. (author), van den Broek, E.L. (author), Schavemaker, J.G.M. (author), Kranenborg, K. (author), de Penning, H.L.H. (author), Blanson Henkemans, O.A. (author), van Tilburg, M.W.T. (author), Bierman, E.B.P. (author), van der Meulen, F.A. (author), Papp, Z. (author), van den Haak, W.P. (author), van Diggelen, J. (author), Janssen, J.B. (author), Witberg, R.R. (author), Kraaij, W. (author)
report 2012
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Schavemaker, J.G.M. (author), Versloot, C.A. (author), de Wit, J.J. (author), Kraaij, W. (author)
The TNO instance search submission to TRECVID 2012 consisted of four different runs: two are using an exhaustive SIFT key-point search, and two are using an extended bag-of-visual-words approach.
conference paper 2012
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Vonder, M.R. (author), van der Waaij, B.D. (author), Zwier, E. (author), Boertjes, E.M. (author), Oostveen, J.C. (author), Raaijmakers, S.A. (author), Schavemaker, J.G.M. (author), Schutte, K. (author), Meulenhoff, P.J. (author), van der Mark, W. (author)
Door de voortschrijdende technologische ontwikkelingen van sensor technologie en de groeiende complexiteit van onze samenleving, is er een duidelijke behoefte ontstaan om (meer) inzicht te krijgen in bestaande situaties en/of objecten. Om te voorkomen dat er een overload aan sensor data ontstaat is automatische ondersteuning van de interpretatie...
report 2011
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Schavemaker, J.G.M. (author), Eendebak, P.T. (author), van Staalduinen, M. (author), Kraaij, W. (author)
The TNO instance search submission to TRECVID 2011 consisted of three different runs: one is using an exhaustive keypoint search, one is using a bag-of-visual-words approach and one is using open-source face-recognition software. Our run approaches: Briefly, what approach or combination of approaches did you test in each of your submitted runs?...
conference paper 2011
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Schavemaker, J.G.M. (author), Kraaij, W. (author), Eendebak, P.T. (author), van Staalduinen, M. (author)
conference paper 2011
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Schavemaker, J.G.M. (author), Doets, P.J. (author), Raaijmakers, S.A. (author), van Staalduinen, M. (author), Kraaij, W. (author)
conference paper 2011
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TNO Informatie- en Communicatietechnologie (author), Schavemaker, J.G.M. (author), Doets, P.J.O. (author), Bailer, W. (author), Stiegler, H. (author), Lee, F. (author), Neuschmied, H. (author), Kraaij, W. (author), Brandt, P. (author), Eendebak, P.T. (author), Ranguelova, E.B. (author), Thean, A.H.C. (author)
In this document we report on existing technologies for video fingerprinting, audio fingerprinting, near duplicate detection and video linking inside and outside our consortium.
report 2010
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TNO Defensie en Veiligheid (author), Yarovoy, A. (author), Savelyev, T. (author), Zhuge, X. (author), Aubry, P. (author), Ligthart, L. (author), Schavemaker, J.G.M. (author), Tettelaar, P. (author), de Breejen, E. (author)
In this paper, integration of an UWB array-based timedomain radar sensor in a vehicle-mounted multi-sensor system for landmine detection is described. Dedicated real-time signal processing algorithms are developed to compute the radar sensor confidence map which is used for sensor fusion. Performance of developed algorithms for stand-alone GPR...
conference paper 2008
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van der Mark, W. (author), Burghouts, G.J. (author), den Dekker, E. (author), ten Kate, T. (author), Schavemaker, J.G.M. (author), TNO Defensie en Veiligheid (author)
There are many applications that require accurate three-dimensional (3-D) computer models of real world scenes. Example applications can be found in crime scene investigation, engineering, construction work, and the entertainment industry. Because creating a 3-D model by hand is a tedious and error prone process it is desirable to use an...
conference paper 2007
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TNO Defensie en Veiligheid (author), de Jong, W. (author), Schavemaker, J.G.M. (author)
This chapter describes the usage of polarization features of visible light for automatic landmine detection. The first section gives an introduction to land-mine detection and the usage of camera systems. In section 2 detection concepts and methods that use polarization features are described. Section 3 describes how these detection concepts...
conference paper 2007
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TNO Defensie en Veiligheid (author), Dijk, J. (author), den Hollander, R.J.M. (author), Schavemaker, J.G.M. (author), Schutte, K. (author)
A camera or display usually has a smaller dynamic range than the human eye. For this reason, objects thatcan be detected by the naked eye may not be visible in recorded images. Lighting is here an important factor; improper local lighting impairs visibility of details or even entire objects. When a human is observing a scene with different kinds...
conference paper 2007
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