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Independent Evaluation

In an independent evaluation performed by Soatto and Perona [49], a technique similar to the proposed one demonstrated good results when compared to other variants. The similar algorithm (referred to as the ``Structure Integral Filter'' in their paper) was cast into a generic evaluation framework [48] and then compared with subspace filters [27], essential filters and fixation constraint methods. The system performed well in terms of accuracy, robustness and noise tolerance. The authors reported some sensitivity to initialization errors in the technique. However, the aforementioned bias estimation component did not seem to be included in the estimation process. Erroneous initialization is precisely the reason for including a bias estimation stage and it can easily be added to the framework when these situations are expected.