Abstract
We propose an efficient solution for preserving the motion boundaries in variational optical flow methods. This is a key problem of recent TV-L 1 methods, which typically create rounded effects at flow edges. A simple strategy to overcome this problem consists in inhibiting the smoothing at high image gradients. However, depending on the strength of the mitigating function, this solution may derive in an ill-posed formulation. Therefore, this type of approaches is prone to produce instabilities in the estimation of the flow fields. In this work, we modify this strategy to avoid this inconvenience. Then, we show that it provides very good results with the advantage that it yields an unconditionally stable scheme. In the experimental results, we present a detailed study and comparison between the different alternatives.
Keywords
- Optical Flow
- Motion Estimation
- TV-L 1
- Variational Method
- Discontinuity-preserving
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References
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Monzón, N., Sánchez, J., Salgado, A. (2014). Efficient Mechanism for Discontinuity Preserving in Optical Flow Methods. In: Elmoataz, A., Lezoray, O., Nouboud, F., Mammass, D. (eds) Image and Signal Processing. ICISP 2014. Lecture Notes in Computer Science, vol 8509. Springer, Cham. https://doi.org/10.1007/978-3-319-07998-1_49
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DOI: https://doi.org/10.1007/978-3-319-07998-1_49
Publisher Name: Springer, Cham
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