Wednesday, June 04, 2014

Lab meeting Jun 5, 2014 (Hung-Chih Lu): Robust Online Multi-Object Tracking based on Tracklet Confidence and Online Discriminative Appearance Learning

Title: Robust Online Multi-Object Tracking based on Tracklet Confidence and Online Discriminative Appearance Learning

Authors: Seung-Hwan Bae and Kuk-Jin Yoon

Abstract:
  Online multi-object tracking aims at producing complete tracks of multiple objects using the information accumulated up to the present moment. It still remains a difficult problem in complex scenes, because of frequent occlusion by clutter or other objects, similar appearances of different objects, and other factors. In this paper, we propose a robust online multi-object tracking method that can handle
these difficulties effectively.
   We first propose the tracklet confidence using the detectability and continuity of a tracklet, and formulate a
multi-object tracking problem based on the tracklet confidence.The multi-object tracking problem is then solved by associating tracklets in different ways according to their confidence values. Based on this strategy, tracklets sequentially grow with online-provided detections, and fragmented tracklets are linked up with others without any iterative and expensive associations. Here, for reliable association between tracklets and detections, we also propose a novel online learning method using an incremental linear discriminant
analysis for discriminating the appearances of objects. By exploiting the proposed learning method, tracklet association can be successfully achieved even under severe occlusion. Experiments with challenging public datasets show distinct performance improvement over other batch and online tracking methods.
                                                                                                                               CVPR 2014
Link

No comments: