Scene Flow Estimation using Intelligent Cost Functions

Simon Hadfield and Richard Bowden

In Proceedings British Machine Vision Conference 2014
http://dx.doi.org/10.5244/C.28.108

Abstract

Motion estimation algorithms are typically based upon the assumption of brightness constancy or related assumptions such as gradient constancy. This manuscript evaluates several common cost functions from the motion estimation literature, which embody these assumptions. We demonstrate that such assumptions break for real world data, and the functions are therefore unsuitable. We propose a simple solution, which significantly increases the discriminatory ability of the metric, by learning a nonlinear relationship using techniques from machine learning. Furthermore, we demonstrate how context and a nonlinear combination of metrics, can provide additional gains, and demonstrating a 65% improvement in the performance of a state of the art scene flow estimation technique. In addition, smaller gains of 20% are demonstrated in optical flow estimation tasks.

Session

Poster Session

Files

Extended Abstract (PDF, 1 page, 658K)

Paper (PDF, 14 pages, 2.3M)

Bibtex File

Citation

Simon Hadfield, and Richard Bowden. Scene Flow Estimation using Intelligent Cost Functions. Proceedings of the British Machine Vision Conference. BMVA Press, September 2014.

BibTex

@inproceedings{BMVC.28.108
	title = {Scene Flow Estimation using Intelligent Cost Functions},
	author = {Hadfield, Simon and Bowden, Richard},
	year = {2014},
	booktitle = {Proceedings of the British Machine Vision Conference},
	publisher = {BMVA Press},
	editors = {Valstar, Michel and French, Andrew and Pridmore, Tony}
	doi = { http://dx.doi.org/10.5244/C.28.108 }
}