Wavelets, including: Wavelet, Jpeg 2000, Icer, Pixlet, Discrete Wavelet Transform, Set Partitioning In Hierarchical Trees, Dynamic Link Matching, ... Embedded Zerotrees Of Wavelet Transforms

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More info: A wavelet is a wave-like oscillation with an amplitude that starts out at zero, increases, and then decreases back to zero. It can typically be visualized as a "brief oscillation" like one might see recorded by a seismograph or heart monitor. Generally, wavelets are purposefully crafted to have specific properties that make them useful for signal processing. Wavelets can be combined, using a "shift, multiply and sum" technique called convolution, with portions of an unknown signal to extract information from the unknown signal.