Publications:

2017

  • J.-H. Hong, C. Zach, and A. Fitzgibbon. Revisiting the Variable Projection Method for Separable Nonlinear Least Squares Problems. CVPR 2017.
  • C. Zach and G. Bourmaud. Iterated Lifting for Robust Cost Optimization. Accepted for BMVC 2017.
  • S. Liwicki and C. Zach. Scale Exploiting Minimal Solvers for Relative Pose with Calibrated Cameras. Accepted for BMVC 2017.

2016

  • C. Zach. Generalized Fusion Moves for Continuous Label Optimization, ACCV 2016. Best paper award! PDF
  • C. Haene, C. Zach, A. Cohen, M. Pollefeys. Dense Semantic 3D Reconstruction, TPAMI 2016.
  • J-H. Hong, C. Zach, A. Fitzgibbon, R. Cipolla. Projective Bundle Adjustment from Arbitrary Initialization using the Variable Projection Method, ECCV 2016.
  • S. Liwicki, C. Zach, O. Miksik, P. Torr. Coarse-to-Fine Planar Regularization for Dense Monocular Estimation, ECCV 2016.

2015

  • A. Cohen, C.Zach. The Likelihood-Ratio Test and Efficient Robust Estimation, ICCV 2015. PDF
  • C. Zach, A. Penate-Sanchez, M.-T. Pham. A Dynamic Programming Approach for Fast and Robust Object Pose Recognition from Range Images, CVPR 2015. PDF
  • C. Zach. A Novel Tree Block-Coordinate Method for MAP Inference, GCPR 2015.

2014

  • C. Zach. A Principled Approach for Coarse-to-Fine MAP Inference, CVPR 2014. PDF
  • C. Zach. Robust Bundle Adjustment Revisited. ECCV 2014, 772-787. PDF
  • B. Zeisl, C. Zach, M. Pollefeys. Variational Regularization and Fusion of Surface Normal Maps. Int. Conf. on 3D Vision (3DV). PDF
  • T Cao, C Zach, S Modla, D Powell, K Czymmek, M Niethammer. Multi-modal registration for correlative microscopy using image analogies, Medical image analysis 18 (6), 914-926.
  • M. Zollhöfer, M. Nießner, S. Izadi, C. Rehmann, C. Zach, M. Fisher, C. Wu, A. Fitzgibbon, C. Loop, C. Theobalt, M. Stamminger. Real-time non-rigid reconstruction using an RGB-D camera. ACM Transactions on Graphics, TOG. PDF
  • D. Kim, S. Izadi, J. Dostal, C. Rhemann, C. Keskin, C. Zach, J. Shotton, T. Large, S. Bathiche, M. Nießner, A. Butler, S. Fanello, V. Pradeep. RetroDepth: 3D silhouette sensing for high-precision input on and above physical surfaces. SIGCHI 2014.

2013

  • C. Zach, C.Haene. Compact Relaxations for MAP Inference in Pairwise MRFs with Piecewise Linear Priors, Tech report
  • C. Zach, C. Haene, M. Pollefeys. What Is Optimized in Convex Relaxations for Multi-Label Problems: Connecting Discrete and Continuously-Inspired MAP Inference, accepted for TPAMI. See also the earlier draft.
  • C. Zach, Dual Decomposition for Joint Discrete-Continuous Optimization, AISTATS 2013. Preprint (PDF and supp. material)
  • C. Haene, C. Zach, A. Cohen, R. Angst, M. Pollefeys. Joint 3D Scene Reconstruction and Class Segmentation. CVPR 2013.
  • J. Shotton, B. Glocker, C. Zach, S. Izadi, A. Criminisi, A. Fitzgibbon. Scene Coordinate Regression Forests for Camera Relocalization in RGB-D Images. CVPR 2013.
  • V. Pradeep and C. Rhemann and S. Izadi and C. Zach and M. Bleyer and S. Bathiche. MonoFusion: Real-time 3D Reconstruction of Small Scenes with a Single Web Camera, ISMAR 2013.

2012

  • C. Zach and P. Kohli. A Convex Discrete-Continuous Approach for Markov Random Fields. ECCV 2012. Preprint (PDF, paper and supp. material)
  • C. Zach, C. Haene, and M. Pollefeys. What Is Optimized in Tight Convex Relaxations for Multi-Label Problems? CVPR 2012. Preprint (PDF, paper and supp. material) Extended and continuously updated TR Web page
  • A. Cohen, C. Zach, S. Sinha, and M. Pollefeys. Discovering and exploiting 3D symmetries in structure from motion. CVPR 2012. Preprint (PDF)
  • J. H. Brito, C. Zach, K. Koeser, M. Ferreira, and M. Pollefeys. One-sided Radial-Fundamental Matrix Estimation. BMVC 2012.
  • C. Haene, C. Zach, B. Zeisl, and M. Pollefeys. A Patch Prior for Dense 3D Reconstruction in Man-Made Environments. 3DIMPVT 2012.
  • T. Cao, C. Zach, S. Modla, D. Powell, K. Czymmek, and M. Niethammer. Registration for Correlative Microscopy using Image Analogies. WBIR 2012.
  • M. Niethammer and C. Zach. Segmentation with area constraints. Medical Image Analysis, 2012.
  • C. Zach. A Note on Convex Relaxations for Non-Metric Smoothness Priors. TR MSRC, 2012 PDF.

2011

  • K. Koeser, C. Zach and M. Pollefeys. Dense 3D Reconstruction of Symmetric Scenes From a Single Image. DAGM 2011. Awarded the Main DAGM Prize. Preprint (PDF) Project page
  • B. Zeisl, C. Zach and M. Pollefeys. Stereo Reconstruction of Building Interiors with a Vertical Structure Prior. 3DIMPVT 2011. PDF
  • C. Haene, C. Zach, J. Lim, A. Ranganathan and M. Pollefeys. Stereo Depth Map Fusion for Robot Navigation. IROS 2011.
  • A. Schwing, C. Zach, Y. Zheng, M. Pollefeys. Adaptive Random Forest - How many "experts" to ask before making a decision? CVPR 2011.
  • R. Angst, C. Zach, and M. Pollefeys. The Generalized Trace-Norm and its Application to Structure-from-Motion Problems. ICCV 2011. Preprint (PDF)
  • C. Kuster, T. Popa, C. Zach, C. Gotsman and M. Gross. FreeCam: A Hybrid Camera System for Interactive Free-Viewpoint Video. VMV 2011. Received the 2nd best paper award. Project page
  • A. Irschara, C. Zach, M. Klopschitz, and Horst Bischof. Large Scale, Dense City Reconstruction from User-Contributed Photos. CVIU 2011. ScienceDirect link

2010

  • C. Zach and M. Pollefeys. Practical Methods For Convex Multi-View Reconstruction. ECCV 2010. Preprint (PDF)
  • C. Zach, M. Klopschitz, and M. Pollefeys. Disambiguating Visual Relations Using Loop Constraints. IEEE Conference on Computer Vision and Pattern Recognition (CVPR). 2010. Preprint (PDF)
  • R. Memisevic, C. Zach, G. Hinton, and M. Pollefeys. Gated Softmax Classification. NIPS 2010. Preprint (PDF)
  • L. Shan, C. Zach, and M. Niethammer. Automatic three-label bone segmentation from MR knee images, ISBI 2010. Preprint (PDF)
  • L. Shan, C. Zach, M. Styner, C. Charles, and M. Niethammer. Automatic bone segmentation and alignment from MR knee images, SPIE Medical Imaging, 2010. Preprint (PDF)
  • Niethammer, M, Boucharin A, Zach C, Maltbie E, Shi Y, Styner M. DTI Connectivity by Segmentation. International Workshop on Medical Imaging and Augmented Reality (MIAR), 2010. Preprint (PDF)
  • J.-M. Frahm, M. Pollefeys, S. Lazebnik, C. Zach, D. Gallup, B. Clipp, R. Raguram, C. Wu, T. Johnson, Fast Robust Large-scale Mapping from Video and Internet Photo Collections. In special issue “100 years of ISPRS” of the ISPRS Journal of Photogrammetry and Remote Sensing (to appear). Preprint (PDF)

2009

  • C. Zach, M. Niethammer, and J.-M. Frahm, Continuous Maximal Flows and Wulff Shapes: Application to MRFs. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), p. 1911-1918, 2009. Preprint (PDF)
  • C. Zach, L. Shan, and M. Niethammer, Globally Optimal Finsler Active Contours, accepted for DAGM, 2009. Preprint (PDF)
  • A. Irschara, C. Zach, J.-M. Frahm, and H. Bischof. From SfM Point Clouds to Fast Location Recognition. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), p. 2599-2606, 2009. Preprint (PDF)
  • B. Clipp, C. Zach, J.-M. Frahm, and M. Pollefeys, A New Minimal Solution to the Relative Pose of a Calibrated Stereo Camera with Small Field of View Overlap, ICCV, 2009. Preprint (PDF)
  • M. Niethammer, C. Zach, J. Melonakos, and A. Tannenbaum. Near-Tubular Fiber Bundle Segmentation for Diffusion Weighted Imaging: Segmentation Through Frame Reorientation. NeuroImage 45(1 Suppl.), p. 123-132, 2009. Preprint (PDF)
  • M. Niethammer, G. Hart, and C. Zach, An Optimal Control Approach for the Registration of Image Time-Series, IEEE Conference on Decision and Control, 2009. Preprint (PDF)
  • G. Hart, C. Zach, and M. Niethammer. An Optimal Control Approach for Deformable Registration, Mathematical Methods in Biomedical Image Analysis (MMBIA), 2009. Preprint (PDF)
  • B. Clipp, C. Zach, J. Lim, J.-M. Frahm, and M. Pollefeys. Adaptive, Real-Time Visual Simultaneous Localization and Mapping, WACV, 2009.

2008

  • C. Zach, A. Irschara, and H. Bischof. What can missing correspondences tell us about 3D structure and motion? IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2008. Preprint (PDF)
  • M. Grabner, C. Zach, and H. Bischof. Efficient Tracking as Linear Program on Weak Binary Classifiers. Pattern Recognition (Proc. DAGM), vol. 5096 of Lecture Notes in Computer Science, 2008. Preprint (PDF)
  • C. Zach, D. Gallup, and J.-M. Frahm. Fast Gain-Adaptive KLT Tracking on the GPU. CVPR Workshop on Visual Computer Vision on GPU's (CVGPU), 2008. PDF
  • C. Zach. Fast and High Quality Fusion of Depth Maps. International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2008. PDF
  • C. Zach, D. Gallup, J.-M. Frahm and M. Niethammer, Fast Global Labeling for Real-Time Stereo Using Multiple Plane Sweeps. Vision, Modeling and Visualization Workshop (VMV), 2008. Preprint (PDF)
  • M. Klopschitz, C. Zach, A. Irschara, and D. Schmalstieg. Generalized Detection and Merging of Loop Closures for Video Sequences. International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2008. PDF
  • X. Li, C. Wu, C. Zach, S. Lazebnik and J.-M. Frahm, Modeling and Recognition of Landmark Image Collections Using Iconic Scene Graphs. ECCV, 2008. Preprint (PDF)
  • M. Niethammer, C. Zach, J. Melonakos and A. Tannenbaum, Tubular Fiber Bundle Segmentation for Diffusion Weighted Imaging, MICCAI Workshop on Computational Diffusion MRI, 2008.
  • A. Wedel, T. Pock, C. Zach, H. Bischof, and D. Cremers. An improved algorithm for TV-L1 optical flow computation. Proceedings of the Dagstuhl Visual Motion Analysis Workshop 2008.

2007

  • C. Zach, T. Pock, and H. Bischof. A globally optimal algorithm for robust TV-L1 range image integration. In IEEE International Conference on Computer Vision (ICCV), 2007. PDF OpenOffice presentation
  • C. Zach, T. Pock, and H. Bischof. A duality based approach for realtime TV-L1 optical flow. Pattern Recognition (Proc. DAGM), vol. 4792 of Lecture Notes in Computer Science, 2007. Awarded the Main DAGM Prize. PDF
  • A. Irschara, C. Zach, and H. Bischof. Towards wiki-based dense city modeling. In Workshop on Virtual Representations and Modeling of Large-scale environments (VRML), 2007. PDF
  • M. Sormann, C. Zach, J. Bauer, K. Karner, and H. Bischof. Watertight multi-view reconstruction based on volumetric graph cuts. Image Analysis (Proc. SCIA), vol. 4522 of Lecture Notes in Computer Science, p. 393-402, 2007. PDF
  • B. Reitinger, C. Zach, and D. Schmalstieg. Augmented reality scouting for interactive 3D reconstruction. In Proc. IEEE Virtual Reality, 2007. PDF
  • T. Pock, C. Zach, and H. Bischof. Mumford-Shah meets stereo: Integration of weak depth hypotheses. In IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2007.PDF
  • T. Pock, M. Urschler, C. Zach, R. Beichel, and H. Bischof. A duality based algorithm for TV-L1-optical-flow image registration. In 10th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI), 2007. PDF

2006

  • C. Zach, M. Sormann, and K. Karner. Scanline optimization for stereo on graphics hardware. In International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006. PDF
  • C. Zach, M. Sormann, and K. Karner. High-performance multi-view reconstruction. In International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006. PDF
  • J. Bauer, C. Zach, K. Karner, and H. Bischof. Efficient sparse 3D reconstruction by space sweeping. In International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006.
  • M. Sormann, C. Zach, and K. Karner. Graph cut based multiple view segmentation for 3D reconstruction. In International Symposium on 3D Data Processing, Visualization and Transmission (3DPVT), 2006.
  • M. Urschler, C. Zach, H. Ditt, H. Bischof (2006). Automatic Point Landmark Matching for Regularizing Nonlinear Intensity Registration: Application to Thoracic CT Images. In Proc. MICCAI, 2006. PDF

2005

  • M. Sormann, C. Zach, J. Bauer, K. Karner, and H. Bischof. Automatic foreground propagation in image sequences for 3D reconstruction. Pattern Recognition (Proc. DAGM), vol. 3663 of Lecture Notes in Computer Science, pages 93-100, 2005.

2004

  • C. Zach, M. Sormann, and M. Grabner. 3D-Geoinformationssysteme, Grundlagen und Anwendungen, chapter Internet-basierte Echtzeitvisualisierung von 3D Geodaten, pages 202-216. Wichmann, 2004.
  • C. Zach, S. Mantler, and K. Karner. Time-critical rendering of huge ecosystems using discrete and continuous levels of detail. Presence: Teleoperators and Virtual Environment, 2004. PDF
  • C. Zach, M. Grabner, and K. Karner. Improved compression of topology for view-dependent rendering. In Proceedings of Spring Conference on Computer Graphics 2004, pages 174-182, 2004. PDF
  • B. Reitinger and C. Zach and A. Bornik and R. Beichel. User-Centric Transfer Function Specification in Augmented Reality. Journal of WSCG, 12(103):335--342. 2004.
  • M. Sormann, A. Klaus, C. Zach, J. Bauer, and K. Karner. VR Modeler: From image sequences to 3D models. In Proceedings of Spring Conference on Computer Graphics 2004, pages 152-160, 2004.

2003

  • C. Zach, A. Klaus, M. Hadwiger, and K. Karner. Accurate dense stereo reconstruction using graphics hardware. In Proc. Eurographics 2003, Short Presentations, 2003.
  • C. Zach, A. Klaus, B. Reitinger, and K. Karner. Optimized stereo reconstruction using 3D graphics hardware. In Workshop of Vision, Modelling, and Visualization (VMV 2003), pages 119-126, 2003.
  • C. Zach and K. Karner. Fast event-driven refinement of dynamic levels of detail. In Proceedings of Spring Conference on Computer Graphics 2003, pages 65-72, 2003.
  • C. Zach and K. Karner. Progressive compression of visibility data for view-dependent multiresolution meshes. Journal of WSCG, 11(3):546-553, 2003.
  • M. Grabner and C. Zach. Adaptive quantization with error bounds for compressed view-dependent multiresolution meshes. In Proc. Eurographics 2003, Short Presentations, pages 77-82, 2003.
  • M. Grabner and H. Bischof and C. Zach and A. Ferko. Multiple Eigenspaces for Hardware Accelerated Image Based Rendering. 27th Workshop of the Austrian Association for Pattern Recognition (AAPR). 2003
  • M. Sormann, C. Zach, and K. Karner. Texture mapping for view-dependent rendering. In Proceedings of Spring Conference on Computer Graphics 2003, pages 146-155, 2003.

2002

  • C. Zach, S. Mantler, and K. Karner. Time-critical rendering of discrete and continuous levels of detail. In Proceedings of ACM Symposium on Virtual Reality Software and Technology 2002, pages 1-8, 2002. PDF
  • C. Zach. Integration of geomorphing into level of detail management for realtime rendering. In Proceedings of Spring Conference on Computer Graphics 2002, pages 115-122, 2002.
  • J. Bauer, A. Klaus, K. Karner, C. Zach, and K. Schindler. Metropogis: A feature based city modeling system. In Photogrammetric Computer Vision 2002 (PCV'02), 2002.
  • K. Karner, M. Gouda, C. Zach, A. Klaus, and J. Bauer. Virtuelle Stadtmodelle: Erstellung, Visualisierung und Nutzung. Journal of the Austrian Society for Artificial Intelligence (ÖGAI), pages 25-32, 2002.

My PhD Thesis

Christopher Zach. High-Performance Modeling From Multiple Views Using Graphics Hardware. PhD thesis, 2007. PDF