>HTTP/1.1 200 OK Date: Thu, 20 Feb 2020 10:08:18 GMT Server: Apache/2.4.10 (Debian) Content-Language: de Content-Length: 26791 Vary: Accept-Encoding Keep-Alive: timeout=5, max=99 Connection: Keep-Alive Content-Type: text/html; charset=utf-8 Publications

Publications of Wolfgang Effelsberg

Sorted by Year

[2018] [2017] [2016] [2015] [2014] 2013 [2012] [2011] [2010] [2009] [2008] [2007] [2006] [2005] [2004] [2003] [2002] [2001] [2000] [1999] [1998] [1997] [1996] [1995] [1994] [1993] [1992] [1991] [1990] [1988] [1987] [1986] [1985] [1984] [1983] [1981] [1980] [1979]

Artikel

Konferenz Beitrag

Buch

Forschungs Papier

  • Benjamin Guthier, Johannes Kiess, Stephan Kopf und Wolfgang Effelsberg. , Technical Reports. 2013 Stereoscopic Seam Carving With Temporal Consistency Mannheim, . 13-002
    In this paper, we present a novel technique for seam carving of stereoscopic video. It removes seams of pixels in areas that are most likely not noticed by the viewer. When applying seam carving to stereoscopic video rather than monoscopic still images, new challenges arise. The detected seams must be consistent between the left and the right view, so that no depth information is destroyed. When removing seams in two consecutive frames, temporal consistency between the removed seams must be established to avoid flicker in the resulting video. By making certain assumptions, the available depth information can be harnessed to improve the quality achieved by seam carving. Assuming that closer pixels are more important, the algorithm can focus on removing distant pixels first. Furthermore, we assume that coherent pixels belonging to the same object have similar depth. By avoiding to cut through edges in the depth map, we can thus avoid cutting through object boundaries.
  • Stephan Kopf, Benjamin Guthier, Philipp Schaber, Torben Dittrich und Wolfgang Effelsberg. , Technical Reports. 2013 Analysis of Disparity Maps for Detecting Saliency in Stereoscopic Video Mannheim, . 13-003
    We present a system for automatically detecting salient image regions in stereoscopic videos. This report extends our previous system and provides additional details about its implementation. Our proposed algorithm considers information based on three dimensions: salient colors in individual frames, salient information derived from camera and object motion, and depth saliency. These three components are dynamically combined into one final saliency map based on the reliability of the individual saliency detectors. Such a combination allows using more efficient algorithms even if the quality of one detector degrades. For example, we use a computationally efficient stereo correspondence algorithm that might cause noisy disparity maps for certain scenarios. In this case, however, a more reliable saliency detection algorithm such as the image saliency is preferred. To evaluate the quality of the saliency detection, we created modified versions of stereoscopic videos with the non-salient regions blurred. Having users rate the quality of these videos, the results show that most users do not detect the blurred regions and that the automatic saliency detection is very reliable.
  • Dominik Schneider, Denny Stohr, Joachim Tingvold, Andre B. Amundsen, Lydia Weiland, Ansgar Scherp, Stephan Kopf und Wolfgang Effelsberg. , . 2013 fulgeo-Design of an Intuitive User Interface for a Multimedia Search Engine Mannheim [u.a.], .
    Multimedia documents like PowerPoint presentations or Flash documents are widely adopted in the Internet and exist in context of lots of different topics. However, so far there is no user friendly way to explore and search for this content. The aim of this work is to address this issue by developing a new, easy-to-use user interface approach and prototype search engine. Our system is called fulgeo and specifically focuses on a suitable multimedia interface for visualizing the query results of Flash documents. The prototype is available online as live demo at: http://fulgeo.komsys.org/
[2018] [2017] [2016] [2015] [2014] 2013 [2012] [2011] [2010] [2009] [2008] [2007] [2006] [2005] [2004] [2003] [2002] [2001] [2000] [1999] [1998] [1997] [1996] [1995] [1994] [1993] [1992] [1991] [1990] [1988] [1987] [1986] [1985] [1984] [1983] [1981] [1980] [1979]