Interactive Media Systems, TU Vienna

Fast Cost-Volume Filtering for Visual Correspondence and Beyond

By Christoph Rhemann, Asmaa Hosni, Michael Bleyer, Carsten Rother, and Margrit Gelautz

Abstract

Many computer vision tasks can be formulated as labeling problems. The desired solution is often a spatially smooth labeling where label transitions are aligned with color edges of the input image. We show that such solutions can be efficiently achieved by smoothing the label costs with a very fast edge preserving filter. In this paper we propose a generic and simple framework comprising three steps: (i) constructing a cost volume (ii) fast cost volume filtering and (iii) winner-take-all label selection. Our main contribution is to show that with such a simple framework state-of-theart results can be achieved for several computer vision applications. In particular, we achieve (i) disparity maps in real-time, whose quality exceeds those of all other fast (local) approaches on the Middlebury stereo benchmark, and (ii) optical flow fields with very fine structures as well as large displacements. To demonstrate robustness, the few parameters of our framework are set to nearly identical values for both applications. Also, competitive results for interactive image segmentation are presented. With this work, we hope to inspire other researchers to leverage this framework to other application areas.

Reference

C. Rhemann, A. Hosni, M. Bleyer, C. Rother, M. Gelautz: "Fast Cost-Volume Filtering for Visual Correspondence and Beyond"; Talk: IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2011, Colorado Springs; 06-21-2011 - 06-23-2011; in: "IEEE Computer Vision and Pattern Recognition", (2011), 8 pages.

Additional Information

Important notes:

(1) To run our code you need to additionally download the "Guided Image Filter" [K. He, J. Sun, X. Tang, Guided Image Filtering, ECCV10] from Kaiming He's website and extract the files "guidedfilter_color.m" and "boxfilter.m" into the same directory as the other Matlab files. Here is a direct link to the guided image filter code.

(2) The code is provided for academic use only. Use of the code in any commercial or industrial related activities is prohibited.

(3) If you use our code we request that you cite the corresponding paper:

@inproceedings{FilterStereo,
   author    = {Christoph Rhemann and Asmaa Hosni and Michael Bleyer and Carsten Rother and Margrit Gelautz},
   title        = {Fast Cost-Volume Filtering for Visual Correspondence and Beyond},
   booktitle = {IEEE Computer Vision and Pattern Recognition (CVPR)},
   year       = {2011},
   location  = {Colorado Springs, USA}
}

(4) More experiments and results have been published recently in the journal paper:

@article{FilterStereoPAMI,
        author    = {Asmaa Hosni and Christoph Rhemann and Michael Bleyer and Carsten Rother and Margrit Gelautz},
        title        = {Fast Cost-Volume Filtering for Visual Correspondence and Beyond},
        journal = {IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)},
        year     = {2013},
        volume = {35},
        pages  = {504 - 511},
        number = {2},
}

Acknowledgments

This work was supported by the Vienna Science and Technology Fund (WWTF) under project ICT08-019.

Downloads

Source Code 4 MB application/zip Download
Supplementary Material 23.6 MB application/x-rar Download

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