Pixel Club: Viewpoint-Aware Object Detection and Pose Estimation

Speaker:
Daniel Glazner (Faculty of Mathematics and Computer Science The Weizmann Institute of Science)
Date:
Tuesday, 8.5.2012, 11:30
Place:
EE Meyer Building 1061

We describe an approach to category-level detection and viewpoint estimation for rigid 3D objects from single 2D images. In contrast to many existing methods, we directly integrate 3D reasoning with an appearance-based voting architecture. Our method relies on a nonparametric representation of a joint distribution of shape and appearance of the object class. Our voting method employs a novel parametrization of joint detection and viewpoint hypothesis space, allowing efficient accumulation of evidence. We combine this with a re-scoring and refinement mechanism, using an ensemble of view-specific Support Vector Machines. We evaluate the performance of our approach in detection and pose estimation of cars on a number of benchmark datasets.

This is joint work with Meirav Galun, Sharon Alpert, Ronen Basri and Gregory Shakhnarovich.

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