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Object matching using feature aggregation over a frame sequence

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2 Author(s)
Mahmoud Bassiouny ; Computer and Systems Engineering Department, Faculty of Engineering, Alexandria University, Egypt ; Motaz El-Saban

Object instance matching is a cornerstone component in many computer vision applications such as image search, augmented reality and unsupervised tagging. The common flow in these applications is to take an input image and match it against a database of previously enrolled images of objects of interest. This is usually difficult as one needs to capture an image corresponding to an object view already present in the database, especially in the case of 3D objects with high curvature where light reflection, viewpoint change and partial occlusion can significantly alter the appearance of the captured image. Rather than relying on having numerous views of each object in the database, we propose an alternative method of capturing a short video sequence scanning a certain object and utilize information from multiple frames to improve the chance of a successful match in the database. The matching step combines local features from a number of frames and incrementally forms a point cloud describing the object. We conduct experiments on a database of different object types showing promising matching results on both a privately collected set of videos and those freely available on the Web such that on YouTube. Increase in accuracy of up to 20% over the baseline of using a single frame matching is shown to be possible.

Published in:

Applications of Computer Vision (WACV), 2011 IEEE Workshop on

Date of Conference:

5-7 Jan. 2011