Abstract
In computer vision, optical flow estimation has attracted the researchers’ interests for decades. Loopy belief propagation (LBP) is widely used for obtaining accurate optical flow in recent years. But its time-consumption and unfitness for large displacement scenes remains a challenging problem. In order to improve the performance of belief propagation in optical flow estimation, we propose an Inertial Constrained Hierarchical Belief Propagation (IHBPFlow) to estimate accurate optical flow. We treat input images as Markov random fields (MRF) and use possible displacements as labels and perform BP on hierarchical MRFs, i.e. superpixel MRF and pixel MRF. First we perform BP on the superpixel MRF, where the step of candidate displacements is enlarged so that the label space can be reduced. Then the basic displacements obtained from the superpixel MRF are used as initial values of the pixel MRF, which effectively compresses the space of labels, thus the process on the pixel MRF can be accelerated. Furthermore, we integrate multi-frame images and previous displacements as inertial constrained information into the proposed hierarchical BP model to enhance its ability to get reliable displacements in scenes where not enough texture information can be provided. Our method performs well on accuracy and speed and obtains competitive results on MPI Sintel dataset.
This work was supported by National Nature Science Foundation of China (No. 61773166), Natural Science Foundation of Shanghai (No. 17ZR1408200) and the Science and Technology Commission of Shanghai Municipality under research grant (No. 14DZ2260800).
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Achanta, R., Shaji, A., Smith, K., Lucchi, A., Fua, P., Süsstrunk, S.: SLIC superpixels compared to state-of-the-art superpixel methods. IEEE Trans. Pattern Anal. Mach. Intell. 34(11), 2274–2282 (2012)
Bao, L., Yang, Q., Jin, H.: Fast edge-preserving patchmatch for large displacement optical flow. In: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, pp. 3534–3541 (2014)
Barnes, C., Shechtman, E., Goldman, D.B., Finkelstein, A.: The generalized patchmatch correspondence algorithm. In: Daniilidis, K., Maragos, P., Paragios, N. (eds.) ECCV 2010. LNCS, vol. 6313, pp. 29–43. Springer, Heidelberg (2010). https://doi.org/10.1007/978-3-642-15558-1_3
Brox, T., Bregler, C., Malik, J.: Large displacement optical flow. In: Computer Vision and Pattern Recognition, pp. 41–48. IEEE (2009)
Brox, T., Bruhn, A., Papenberg, N., Weickert, J.: High accuracy optical flow estimation based on a theory for warping. In: Pajdla, T., Matas, J. (eds.) ECCV 2004. LNCS, vol. 3024, pp. 25–36. Springer, Heidelberg (2004). https://doi.org/10.1007/978-3-540-24673-2_3
Brox, T., Malik, J.: Large displacement optical flow: descriptor matching in variational motion estimation. IEEE Trans. Pattern Anal. Mach. Intell. 33(3), 500–513 (2011)
Butler, D.J., Wulff, J., Stanley, G.B., Black, M.J.: A naturalistic open source movie for optical flow evaluation. In: Fitzgibbon, A., Lazebnik, S., Perona, P., Sato, Y., Schmid, C. (eds.) ECCV 2012. LNCS, vol. 7577, pp. 611–625. Springer, Heidelberg (2012). https://doi.org/10.1007/978-3-642-33783-3_44
Chen, Q., Koltun, V.: Full flow: optical flow estimation by global optimization over regular grids. In: IEEE Conference on Computer Vision and Pattern Recognition (2016)
Felzenszwalb, P.F., Huttenlocher, D.P.: Efficient belief propagation for early vision. Int. J. Comput. Vis. 70(1), 41–54 (2006)
Horn, B.K., Schunck, B.G.: Determining optical flow. Artif. Intell. 17(1–3), 185–203 (1981)
Hu, Y., Song, R., Li, Y.: Efficient coarse-to-fine patchmatch for large displacement optical flow. In: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, pp. 5704–5712 (2016)
Kennedy, R., Taylor, C.J.: Hierarchically-constrained optical flow. In: IEEE Conference on Computer Vision and Pattern Recognition (2015)
Li, Y., Min, D., Brown, M.S., Do, M.N., Lu, J.: SPM-BP: Sped-up patchmatch belief propagation for continuous MRFS. In: IEEE International Conference on Computer Vision (2015)
Liu, C., Yuen, J., Torralba, A.: SIFT flow: dense correspondence across scenes and its applications. IEEE Trans. Pattern Anal. Mach. Intell. 33(5), 978–994 (2011)
Lowe, D.G.: Object recognition from local scale-invariant features. In: International Conference on Computer Vision, vol. 2, pp. 1150–1157 (1999)
Revaud, J., Weinzaepfel, P., Harchaoui, Z., Schmid, C.: EpicFlow: edge-preserving interpolation of correspondences for optical flow. In: IEEE Conference on Computer Vision and Pattern Recognition (2015)
Sun, D., Roth, S., Black, M.J.: Secrets of optical flow estimation and their principles. In: Computer Vision and Pattern Recognition, pp. 2432–2439 (2010)
Sun, D., Roth, S., Black, M.J.: A quantitative analysis of current practices in optical flow estimation and the principles behind them. Int. J. Comput. Vis. 106(2), 115–137 (2014)
Weinzaepfel, P., Revaud, J., Harchaoui, Z., Schmid, C.: Deepflow: large displacement optical flow with deep matching. In: Proceedings of the IEEE International Conference on Computer Vision, pp. 1385–1392 (2013)
Xu, J., Ranftl, R., Koltun, V.: Accurate optical flow via direct cost volume processing. In: IEEE Conference on Computer Vision and Pattern Recognition (CVPR) (2017)
Zabih, R., Woodfill, J.: Non-parametric local transforms for computing visual correspondence. In: Eklundh, J.-O. (ed.) ECCV 1994. LNCS, vol. 801, pp. 151–158. Springer, Heidelberg (1994). https://doi.org/10.1007/BFb0028345
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Switzerland AG
About this paper
Cite this paper
Zhang, Z., Wen, Y. (2018). Inertial Constrained Hierarchical Belief Propagation for Optical Flow. In: Geng, X., Kang, BH. (eds) PRICAI 2018: Trends in Artificial Intelligence. PRICAI 2018. Lecture Notes in Computer Science(), vol 11012. Springer, Cham. https://doi.org/10.1007/978-3-319-97304-3_44
Download citation
DOI: https://doi.org/10.1007/978-3-319-97304-3_44
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-97303-6
Online ISBN: 978-3-319-97304-3
eBook Packages: Computer ScienceComputer Science (R0)