Proceedings ArticleDOI
Rate-efficient, real-time cd cover recognition on a camera-phone
Sam S. Tsai,David Chen,Jatinder Singh,Bernd Girod +3 more
- pp 1023-1024
TLDR
A real-time CD cover recognition using a cameraphone and fast and reliable image matching against a database of 10,000 CD covers is accomplished using a scalable vocabulary tree.Abstract:
Automatic CD cover recognition has interesting applications for comparison shopping and music sampling. We demonstrate a real-time CD cover recognition using a cameraphone. By snapping a picture of a CD cover with her cameraphone, a user can conveniently retrieve information related to the CD. Robust image feature extraction is applied to overcome the image distortions in the query photo. To limit the amount of data transmitted over a wireless network, we compress the query image or features extracted from the query image. On the database side, fast and reliable image matching against a database of 10,000 CD covers is accomplished using a scalable vocabulary tree.read more
Citations
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Proceedings ArticleDOI
Unified Real-Time Tracking and Recognition with Rotation-Invariant Fast Features
TL;DR: This work presents a method that unifies tracking and video content recognition with applications to Mobile Augmented Reality (MAR), and introduces the Radial Gradient Transform (RGT) and an approximate RGT, yielding the Rotation-Invariant, Fast Feature (RIFF) descriptor.
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An interactive region-of-interest video streaming system for online lecture viewing
TL;DR: A design overview of the ClassX system and the evaluation results of a 3-month pilot deployment demonstrate that the system is a low-cost, efficient and pragmatic solution to interactive online lecture viewing.
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Mobile product recognition
Sam S. Tsai,David Chen,Vijay Chandrasekhar,Gabriel Takacs,Ngai-Man Cheung,Ramakrishna Vedantham,Radek Grzeszczuk,Bernd Girod +7 more
TL;DR: This work uses inverted index compression and fast geometric re-ranking on their database to provide a low delay image recognition response for large scale databases.
Proceedings ArticleDOI
Fast geometric re-ranking for image-based retrieval
Sam S. Tsai,David Chen,Gabriel Takacs,Vijay Chandrasekhar,Ramakrishna Vedantham,Radek Grzeszczuk,Bernd Girod +6 more
TL;DR: This work presents a fast and efficient geometric re-ranking method that can be incorporated in a feature based image-based retrieval system that utilizes a Vocabulary Tree (VT), and shows in experiments that re- ranking schemes can substantially improve recognition accuracy.
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Location coding for mobile image retrieval
TL;DR: This work investigates how to compress the location information and how lossy compression affects the geometric consistency check and proposes a context-based arithmetic coding with location refinement method to code the location histogram.
References
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