Robust nighttime turn sig nal direction recognition

In this work, to recognize the direction of turn signals, reflectance is decomposed from the original image. Instead of using heuristic features such as the symmetry, position and size of the rear-view vehicle, we focus on finding the invariant features to model turn signal scattering by scatter properties and then turn signals detection can be performed in a part-based manner. Experiment results with the detection rate above 80% show the effectiveness of the proposed turn signal detector under different lighting and traffic conditions.