Ondra
Ondrej Chum
Associate Professor
I am leading a team within the Visual Recognition Group at the Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague. I received the MSc degree in computer science from Charles University, Prague, in 2001 and the PhD degree from the Czech Technical University in Prague, in 2005. From 2006 to 2007, I was a postdoctoral researcher at the Visual Geometry Group, University of Oxford, United Kingdom. My research interests include large-scale image and particular object retrieval, object recognition, and robust estimation of geometric models. I am a member of Image and Vision Computing editorial board, and I have served in various roles at major international conferences (e.g., ICCV, ECCV, CVPR, and BMVC). I co-organize Computer Vision and Sports Summers School in Prague. I was the recipient of the Best Paper Prize at the British Machine Vision Conference in 2002. I was awarded the 2012 Outstanding Young Researcher in Image & Vision Computing runner up for researchers within seven years of their PhD. [. . .]
Asymmetric Feature Maps with Application to Sketch Based Retrieval
Asymmetric Feature Maps with Application to Sketch Based Retrieval
G. Tolias, O. Chum
CVPR, 2017
@inproceedings{Tolias-CVPR17,
 title = {Asymmetric Feature Maps with Application to Sketch Based Retrieval},
 author = {Tolias, G. and Chum, O.},
 booktitle = {CVPR},
 year = {2017}
}
Efficient Diffusion on Region Manifolds: Recovering Small Objects with Compact CNN Representations
Efficient Diffusion on Region Manifolds: Recovering Small Objects with Compact CNN Representations
A. Iscen, G. Tolias, Y. Avrithis, T. Furon, O. Chum
CVPR, 2017
@inproceedings{Iscen-CVPR17,
 title = {Efficient Diffusion on Region Manifolds: Recovering Small Objects with Compact {CNN} Representations},
 author = {Iscen, A. and Tolias, G. and Avrithis, Y. and Furon, T. and Chum, O.},
 booktitle = {CVPR},
 year = {2017}
}
Panorama to Panorama Matching for Location Recognition
Panorama to Panorama Matching for Location Recognition
A. Iscen, G. Tolias, Y. Avrithis, T. Furon, O. Chum
ICMR, 2017
@inproceedings{Iscen-ICMR17,
 title = {Panorama to Panorama Matching for Location Recognition},
 author = {Iscen, A. and Tolias, G. and Avrithis, Y. and Furon, T. and Chum, O.},
 booktitle = {ICMR},
 year = {2017}
}
CNN Image Retrieval Learns from BoW: Unsupervised Fine-Tuning with Hard Examples
CNN Image Retrieval Learns from BoW: Unsupervised Fine-Tuning with Hard Examples
F. Radenovic, G. Tolias, O. Chum
ECCV, 2016
@inproceedings{Radenovic-ECCV16,
 title = {{CNN} Image Retrieval Learns from {BoW}: Unsupervised Fine-Tuning with Hard Examples},
 author = {Radenovi{\'c}, F. and Tolias, G. and Chum, O.},
 booktitle = {ECCV},
 year = {2016}
}
From Single Image Query to Detailed 3D Reconstruction
From Single Image Query to Detailed 3D Reconstruction
J. Schonberger, F. Radenovic, O. Chum, J.-M. Frahm
CVPR, 2015
@inproceedings{Schoenberger-CVPR15,
 title = {From Single Image Query to Detailed 3D Reconstruction},
 author = {Sch\"{o}nberger, J. and Radenovi\'{c}, F. and Chum, O. and Frahm, J.-M.},
 booktitle = {CVPR},
 year = {2015}
}
Multiple Measurements and Joint Dimensionality Reduction for Large Scale Image Search with Short Vectors
Multiple Measurements and Joint Dimensionality Reduction for Large Scale Image Search with Short Vectors
F. Radenovic, H. Jegou, O. Chum
ICMR, 2015
@inproceedings{Radenovic-ICMR15,
 title = {Multiple Measurements and Joint Dimensionality Reduction for Large Scale Image Search with Short Vectors},
 author = {Radenovi{\'c}, F. and J{\'e}gou, H. and Chum, O.},
 booktitle = {ICMR},
 year = {2015}
}
Camera Elevation Estimation from a Single Mountain Landscape Photograph
Camera Elevation Estimation from a Single Mountain Landscape Photograph
M. Cadik, J. Vasicek, M. Hradis, F. Radenovic, O. Chum
BMVC, 2015
@inproceedings{Cadik-BMVC15,
 title = {Camera Elevation Estimation from a Single Mountain Landscape Photograph},
 author = {\v{C}ad\'{\i}k, M. and Va\v{s}\'{i}\v{c}ek, J. and Hradi\v{s}, M. and Radenovi{\' c}, F. and Chum, O.},
 booktitle = {BMVC},
 year = {2015}
}
Efficient Image Detail Mining
Efficient Image Detail Mining
A. Mikulik, F. Radenovic, O. Chum, J. Matas
ACCV, 2014
@inproceedings{Mikulik-ACCV14,
 title = {Efficient Image Detail Mining},
 author = {Mikul\'{\i}k, A. and Radenovi\'{c}, F. and Chum, O. and Matas, J.},
 booktitle = {ACCV},
 year = {2014}
}
Image Retrieval for Online Browsing in Large Image Collections
Image Retrieval for Online Browsing in Large Image Collections
A. Mikulik, O. Chum, J. Matas
SISAP, 2013
@inproceedings{Mikulik-SISAP13,
 title = {Image Retrieval for Online Browsing in Large Image Collections},
 author = {Mikulik, A. and Chum, O. and Matas, J.},
 booktitle = {SISAP},
 year = {2013},
 pages = {3--15},
 series = {8199}
}
Learning Vocabularies over a Fine Quantization
Learning Vocabularies over a Fine Quantization
A. Mikulik, M. Perdoch, O. Chum, J. Matas
International Journal of Computer Vision, 2012
@article{Mikulik-IJCV12,
 title = {Learning Vocabularies over a Fine Quantization},
 author = {Mikulik, A. and Perdoch, M. and Chum, O. and Matas, J.},
 journal = {International Journal of Computer Vision},
 year = {2012},
 pages = {1-13},
 publisher = {Springer US}
}
Fast Computation of min-Hash Signatures for Image Collections
Fast Computation of min-Hash Signatures for Image Collections
O. Chum, J. Matas
CVPR, 2012
@inproceedings{Chum-CVPR12,
 title = {Fast Computation of {min-Hash} Signatures for Image Collections},
 author = {Chum, O. and Matas, J.},
 booktitle = {CVPR},
 year = {2012}
}
Negative Evidences and Co-occurences in Image Retrieval: The Benefit of PCA and Whitening
Negative Evidences and Co-occurences in Image Retrieval: The Benefit of PCA and Whitening
H. Jegou, O. Chum
ECCV, 2012
@inproceedings{Jegou-ECCV12,
 title = {Negative Evidences and Co-occurences in Image Retrieval: The Benefit of {PCA} and Whitening},
 author = {J\'{e}gou, H. and Chum, O.},
 booktitle = {ECCV},
 year = {2012}
}
Total Recall II: Query Expansion Revisited
Total Recall II: Query Expansion Revisited
O. Chum, A. Mikulik, M. Perdoch, J. Matas
CVPR, 2011
@inproceedings{Chum-CVPR11,
 title = {Total Recall II: Query Expansion Revisited},
 author = {Chum, O. and Mikulik, A. and Perdoch, M. and Matas, J.},
 booktitle = {CVPR},
 year = {2011}
}
Large-Scale Discovery of Spatially Related Images
Large-Scale Discovery of Spatially Related Images
O. Chum, J. Matas
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2010
@article{Chum-PAMI10,
 title = {Large-Scale Discovery of Spatially Related Images},
 author = {Chum, O. and Matas, J.},
 journal = {IEEE Transactions on Pattern Analysis and  Machine Intelligence},
 year = {2010},
 pages = {371-377},
 publisher = {IEEE},
 volume = {32}
}
Unsupervised Discovery of Co-occurrence in Sparse High Dimensional Data
Unsupervised Discovery of Co-occurrence in Sparse High Dimensional Data
O. Chum, J. Matas
CVPR, 2010
@inproceedings{Chum-CVPR10,
 title = {Unsupervised Discovery of Co-occurrence in Sparse High Dimensional Data},
 author = {Chum, O. and Matas, J.},
 booktitle = {CVPR},
 year = {2010}
}
Learning a Fine Vocabulary
Learning a Fine Vocabulary
A. Mikulik, M. Perdoch, O. Chum, J. Matas
ECCV, 2010
@inproceedings{Mikulik-ECCV10,
 title = {Learning a Fine Vocabulary},
 author = {Mikulik, A. and Perdoch, M. and Chum, O. and Matas, J.},
 booktitle = {ECCV},
 year = {2010}
}
Geometric min-Hashing: Finding a (Thick) Needle in a Haystack
Geometric min-Hashing: Finding a (Thick) Needle in a Haystack
O. Chum, M. Perdoch, J. Matas
CVPR, 2009
@inproceedings{Chum-CVPR09,
 title = {Geometric min-{H}ashing: Finding a (Thick) Needle in a Haystack},
 author = {Chum, O. and Perdoch, M. and Matas, J.},
 booktitle = {CVPR},
 year = {2009}
}
Efficient Representation of Local Geometry for Large Scale Object Retrieval
Efficient Representation of Local Geometry for Large Scale Object Retrieval
M. Perdoch, O. Chum, J. Matas
CVPR, 2009
@inproceedings{Perdoch-CVPR09,
 title = {Efficient Representation of Local Geometry for Large Scale Object Retrieval},
 author = {Perdoch, M. and Chum, O. and Matas, J.},
 booktitle = {CVPR},
 year = {2009}
}
Lost in Quantization: Improving Particular Object Retrieval in Large Scale Image Databases
Lost in Quantization: Improving Particular Object Retrieval in Large Scale Image Databases
J. Philbin, O. Chum, M. Isard, J. Sivic, A. Zisserman
CVPR, 2008
@inproceedings{Philbin-CVPR08,
 title = {Lost in Quantization: Improving Particular Object Retrieval in Large Scale Image Databases},
 author = {Philbin, J. and Chum, O. and Isard, M. and Sivic, J. and Zisserman,	A.},
 booktitle = {CVPR},
 year = {2008}
}
Total Recall: Automatic Query Expansion with a Generative Feature Model for Object Retrieval
Total Recall: Automatic Query Expansion with a Generative Feature Model for Object Retrieval
O. Chum, J. Philbin, J. Sivic, M. Isard, A. Zisserman
ICCV, 2007
@inproceedings{Chum-ICCV07,
 title = {Total Recall: Automatic Query Expansion with a Generative Feature Model for Object Retrieval},
 author = {Chum, O. and Philbin, J. and Sivic, J. and Isard, M. and Zisserman,	A.},
 booktitle = {ICCV},
 year = {2007}
}
Scalable Near Identical Image and Shot Detection
Scalable Near Identical Image and Shot Detection
O. Chum, J. Philbin, M. Isard, A. Zisserman
CIVR, 2007
@inproceedings{Chum-CIVR07,
 title = {Scalable Near Identical Image and Shot Detection},
 author = {Chum, O. and Philbin, J. and Isard, M. and Zisserman, A.},
 booktitle = {CIVR},
 year = {2007}
}
Object Retrieval with Large Vocabularies and Fast Spatial Matching
Object Retrieval with Large Vocabularies and Fast Spatial Matching
J. Philbin, O. Chum, M. Isard, J. Sivic, A. Zisserman
CVPR, 2007
@inproceedings{Philbin-CVPR07,
 title = {Object Retrieval with Large Vocabularies and Fast Spatial Matching},
 author = {Philbin, J. and Chum, O. and Isard, M. and Sivic, J. and Zisserman,	A.},
 booktitle = {CVPR},
 year = {2007}
}