Fast algorithms for generalized discrete Gabor expansion
Signal Processing
The Earth Mover's Distance as a Metric for Image Retrieval
International Journal of Computer Vision
Continuous wavelet transform with arbitrary scales and O(N) complexity
Signal Processing
A Metric for Distributions with Applications to Image Databases
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
A Linear Time Histogram Metric for Improved SIFT Matching
ECCV '08 Proceedings of the 10th European Conference on Computer Vision: Part III
Wavelet-type denoising for mechanical structures diagnosis
EMESEG'10 Proceedings of the 3rd WSEAS international conference on Engineering mechanics, structures, engineering geology
Theory, implementation and applications of nonstationary Gabor frames
Journal of Computational and Applied Mathematics
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We introduce in this paper a method for observing the appearance of damages in cantilever beams. The procedure is based on comparing the natural frequencies extracted from the refined time-frequency spectrum of the non-stationary Gabor transform. The comparison is realized with an algorithm for computing the Earth's mover distance (EMD) metric such that the possibility of ambient effects is canceled. The EMD is used to measure the dissimilarities on signatures of sets with different frequency values for the first 10 vibration modes.