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Scene Flow Estimation using Intelligent Cost Functions

Hadfield, S and Bowden, R (2014) Scene Flow Estimation using Intelligent Cost Functions In: British Conference on Machine Vision (BMVC) 2014, Nottingham, UK.

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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 44% 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.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Vision Speech and Signal Processing
Authors :
Date : September 2014
Identification Number : 10.5244/C.28.108
Related URLs :
Additional Information : © 2014. The copyright of this document resides with its authors.
Depositing User : Symplectic Elements
Date Deposited : 18 Nov 2015 10:28
Last Modified : 18 Nov 2015 10:28

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