Learning TBox With a Cascaded Anchor-Free Network for Vehicle Detection

Vehicle detection, the process of identifying vehicles as axis-aligned bounding boxes in still images, is widely used to estimate the range, time-to-collision, and motion of autonomous vehicles (AVs). Bounding boxes, while convenient, are too coarse to adapt well to vehicle shape and pose variations. In this work, we present TBox (Trapezoid & Box), a novel fine-grained represe...