NDLI: A Wavelet-Based Approach to Image Feature Stability Assessment

Content Provider	IEEE Xplore Digital Library
Author	Robles-Kelly, A. Goecke, R.
Copyright Year	2006
Description	Author affiliation: National ICT Australia, Australia (Robles-Kelly, A.)
Abstract	In this paper, we present a novel method for assessing image-feature stability. The method hinges on applying the discrete wavelet transform to the image features under study throughout a number of video frames in an image sequence. For purposes of stability assessment, we recover the imagefeature vectors for each video frame and then track them trough a series of consecutive frames in the image sequence. We apply the discrete wavelet transform to the time series constructed from the pairwise Euclidean distances for each of the image features under study and use the wavelet transform coefficients to assess their stability. We then recover the stable features by clustering together those time series which exhibit largely constant low-pass wavelet coefficients. We present results of the stability analysis for Harris corners, Maximally Stable Extremal Regions, and Scale Invariant Feature Transform regions extracted from two real-world video sequences. We also elaborate on the applications of our method to indexing, retrieval, and compression of stable image feature vectors.
Starting Page	25
Ending Page	25
File Size	655065
Page Count	1
File Format	PDF
ISBN	0769526462
DOI	10.1109/CVPRW.2006.22
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Video sequences Image retrieval Fasteners Feature extraction Stability analysis Discrete wavelet transforms Image sequences Wavelet coefficients Indexing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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