3D Object Reconstruction and Recognition

We study the problem of 3D object reconstruction and recognition. For reconstruction, we aim at developing algorithms and systems to lower down the barrier of 3D reconstruction for common users. In this way, we can collect a world-class 3D object repository via leveraging crowdsourcing. For recognition, we aim at dealing with a large-scale task (e.g. identifying thousands of objects), and providing real-time performance.

1. 3D Object Reconstruction

 coming soon ...

 

2. 3D Object Recognition

3D model-based object recognition has been a noticeable research trend in recent years. Common methods identify 2D-to-3D correspondences and make recognition decisions by RANSAC-based pose estimation, whose efficiency usually suffers from inaccurate correspondences caused by the increasing number of target objects for recognition. To overcome this scalability bottleneck, in this paper we propose an efficient 2D-to-3D correspondence filtering approach which combines a light-weight neighborhood-based step with a finer-grained pairwise step to remove spurious
correspondences by 2D/3D geometric cues. On a dataset of 300 3D objects, the proposed solution achieves ~10 times speed improvement over the baseline, with a comparable recognition accuracy. A non-GPU implementation achieves a speed of ~3fps for 1280×720 query images.

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Publications