Scale estimation with difference of ordered residuals

Multiple model estimation is an important problem in computer vision. Through estimation, one can detect important structural information in an image. A crucial step in multiple model estimation is the ability to dichotomize inliers of a model from outliers. This paper proposes a novel technique for estimating the scale of a model. In contrast to previous adaptive scale estimate works, our method removes the need for user provided input. We achieve accurate scale estimation through consecutive inspection of the ordered residuals. Our results show the ability of the proposed scale estimate metric to maintain accurate scale estimation even with over 90% outliers present in the data. Likewise, we also apply our scale estimator with multiple model estimation problems for detecting planes and two-view motions, demonstrating the ability of our approach to accurately estimate scale in real application oriented scenarios.