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ISMAR
2009
IEEE

Augmenting text document by on-line learning of local arrangement of keypoints

10 years 1 months ago
Augmenting text document by on-line learning of local arrangement of keypoints
We propose a technique for text document tracking over a large range of viewpoints. Since the popular SIFT or SURF descriptors typically fail on such documents, our method considers instead local arrangement of keypoints. We extends Locally Likely Arrangement Hashing (LLAH), which is limited to fronto-parallel images: We handle a large range of viewpoints by learning the behavior of keypoint patterns when the camera viewpoint changes. Our method starts tracking a document from a nearly frontal view. Then, it undergoes motion, and new configurations of keypoints appear. The database is incrementally updated to reflect these new observations, allowing the system to detect the document under the new viewpoint. We demonstrate the performance and robustness of our method by comparing it with the original LLAH.
Hideaki Uchiyama, Hideo Saito
Added 24 May 2010
Updated 24 May 2010
Type Conference
Year 2009
Where ISMAR
Authors Hideaki Uchiyama, Hideo Saito
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