Anselm Grundhöfer | Disney Research Zürich (original) (raw)
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Papers by Anselm Grundhöfer
Joint Eurographics - IEEE TCVG Symposium on Visualization, 2004
Wepresent a three pass occlusion culling algorithm, which makes efficient use of hardware support... more Wepresent a three pass occlusion culling algorithm, which makes efficient use of hardware support. Our geo-scientific sub-surface data sets consist typically of a set of high resolution height fields, polygonal objects, and volume slices and lenses. The first rendering pass computes a z-buffer image using low resolution objects and the non-transparent volume objects. During the second pass, we render
2013 IEEE Conference on Computer Vision and Pattern Recognition Workshops, 2013
Proceedings of the 3rd international conference on Computer graphics and interactive techniques in Australasia and South East Asia - GRAPHITE '05, 2005
IEEE Virtual Reality Conference (VR 2006), 2006
ACM SIGGRAPH 2008 talks on - SIGGRAPH '08, 2008
We synchronize cameras and analog lighting with high speed projectors. Radiometric compensation a... more We synchronize cameras and analog lighting with high speed projectors. Radiometric compensation allows displaying flexible blue screens on arbitrary real world surfaces. A fast temporal multiplexing of coded projection and flash illumination enables professional chroma keying and camera tracking for non-studio film sets.
2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Workshops, 2010
CAMShift is a well-established and fundamental algorithm for kernel-based visual object tracking.... more CAMShift is a well-established and fundamental algorithm for kernel-based visual object tracking. While it performs well with objects that have a simple and constant appearance, it is not robust in more complex cases. As it solely relies on back projected probabilities it can fail in cases when the object's appearance changes (e.g., due to object or camera movement, or due to lighting changes), when similarly colored objects have to be re-detected or when they cross their trajectories. We propose low-cost extensions to CAMShift that address and resolve all of these problems. They allow the accumulation of multiple histograms to model more complex object appearances and the continuous monitoring of object identities to handle ambiguous cases of partial or full occlusion. Most steps of our method are carried out on the GPU for achieving real-time tracking of multiple targets simultaneously. We explain efficient GPU implementations of histogram generation, probability back projection, computation of image moments, and histogram intersection. All of these techniques make full use of a GPU's high parallelization capabilities.
Lecture Notes in Computer Science, 2011
2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality, 2007
ACM SIGGRAPH 2005 Sketches on - SIGGRAPH '05, 2005
SIGGRAPH 2009: Talks on - SIGGRAPH '09, 2009
With adaptive coded aperture projection, we present solutions for taking projectors to the next l... more With adaptive coded aperture projection, we present solutions for taking projectors to the next level. By placing a programmable liquid crystal array at a projectors aperture plane we show how the depth of field (DOF) of a projection can be greatly enhanced. This allows focussed imagery to be shown on complex screens with varying distances to the projectors focal plane,
Proceedings of the SIGGRAPH 2003 conference on Sketches & applications in conjunction with the 30th annual conference on Computer graphics and interactive techniques - GRAPH '03, 2003
Practical Holography XIX: Materials and Applications, 2005
Virtual studio technology plays an important role for modern television productions. Blue-screen ... more Virtual studio technology plays an important role for modern television productions. Blue-screen matting is a common technique for integrating real actors or moderators into computer generated sceneries. Augmented reality offers the possibility to mix real and virtual in a more ...
ACM SIGGRAPH 2011 Posters on - SIGGRAPH '11, 2011
A variety of standard video modes that stretch or zoom lower resolution video content linearly to... more A variety of standard video modes that stretch or zoom lower resolution video content linearly to take full advantage of large screen sizes have been implemented in TV sets. When content and screen aspect ratios differ, format proportions may be compromised, video content may be clipped, or screen regions may remain unused. Newer techniques, such as video retargeting and video
SIGGRAPH 2009: Talks on - SIGGRAPH '09, 2009
... Downloads (12 Months), 105. View colleagues of Daniel Kurz. Sebastian Thiele No contact infor... more ... Downloads (12 Months), 105. View colleagues of Daniel Kurz. Sebastian Thiele No contact information provided yet. Bibliometrics: publication history ... Downloads (6 Weeks), 5. Downloads (12 Months), 36. View colleagues of Sebastian Thiele. Ferry Häntsch ...
Joint Eurographics - IEEE TCVG Symposium on Visualization, 2004
Wepresent a three pass occlusion culling algorithm, which makes efficient use of hardware support... more Wepresent a three pass occlusion culling algorithm, which makes efficient use of hardware support. Our geo-scientific sub-surface data sets consist typically of a set of high resolution height fields, polygonal objects, and volume slices and lenses. The first rendering pass computes a z-buffer image using low resolution objects and the non-transparent volume objects. During the second pass, we render
2013 IEEE Conference on Computer Vision and Pattern Recognition Workshops, 2013
Proceedings of the 3rd international conference on Computer graphics and interactive techniques in Australasia and South East Asia - GRAPHITE '05, 2005
IEEE Virtual Reality Conference (VR 2006), 2006
ACM SIGGRAPH 2008 talks on - SIGGRAPH '08, 2008
We synchronize cameras and analog lighting with high speed projectors. Radiometric compensation a... more We synchronize cameras and analog lighting with high speed projectors. Radiometric compensation allows displaying flexible blue screens on arbitrary real world surfaces. A fast temporal multiplexing of coded projection and flash illumination enables professional chroma keying and camera tracking for non-studio film sets.
2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Workshops, 2010
CAMShift is a well-established and fundamental algorithm for kernel-based visual object tracking.... more CAMShift is a well-established and fundamental algorithm for kernel-based visual object tracking. While it performs well with objects that have a simple and constant appearance, it is not robust in more complex cases. As it solely relies on back projected probabilities it can fail in cases when the object's appearance changes (e.g., due to object or camera movement, or due to lighting changes), when similarly colored objects have to be re-detected or when they cross their trajectories. We propose low-cost extensions to CAMShift that address and resolve all of these problems. They allow the accumulation of multiple histograms to model more complex object appearances and the continuous monitoring of object identities to handle ambiguous cases of partial or full occlusion. Most steps of our method are carried out on the GPU for achieving real-time tracking of multiple targets simultaneously. We explain efficient GPU implementations of histogram generation, probability back projection, computation of image moments, and histogram intersection. All of these techniques make full use of a GPU's high parallelization capabilities.
Lecture Notes in Computer Science, 2011
2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality, 2007
ACM SIGGRAPH 2005 Sketches on - SIGGRAPH '05, 2005
SIGGRAPH 2009: Talks on - SIGGRAPH '09, 2009
With adaptive coded aperture projection, we present solutions for taking projectors to the next l... more With adaptive coded aperture projection, we present solutions for taking projectors to the next level. By placing a programmable liquid crystal array at a projectors aperture plane we show how the depth of field (DOF) of a projection can be greatly enhanced. This allows focussed imagery to be shown on complex screens with varying distances to the projectors focal plane,
Proceedings of the SIGGRAPH 2003 conference on Sketches & applications in conjunction with the 30th annual conference on Computer graphics and interactive techniques - GRAPH '03, 2003
Practical Holography XIX: Materials and Applications, 2005
Virtual studio technology plays an important role for modern television productions. Blue-screen ... more Virtual studio technology plays an important role for modern television productions. Blue-screen matting is a common technique for integrating real actors or moderators into computer generated sceneries. Augmented reality offers the possibility to mix real and virtual in a more ...
ACM SIGGRAPH 2011 Posters on - SIGGRAPH '11, 2011
A variety of standard video modes that stretch or zoom lower resolution video content linearly to... more A variety of standard video modes that stretch or zoom lower resolution video content linearly to take full advantage of large screen sizes have been implemented in TV sets. When content and screen aspect ratios differ, format proportions may be compromised, video content may be clipped, or screen regions may remain unused. Newer techniques, such as video retargeting and video
SIGGRAPH 2009: Talks on - SIGGRAPH '09, 2009
... Downloads (12 Months), 105. View colleagues of Daniel Kurz. Sebastian Thiele No contact infor... more ... Downloads (12 Months), 105. View colleagues of Daniel Kurz. Sebastian Thiele No contact information provided yet. Bibliometrics: publication history ... Downloads (6 Weeks), 5. Downloads (12 Months), 36. View colleagues of Sebastian Thiele. Ferry Häntsch ...