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To improve the classification performance of sparse representation features, a method of video semantic analysis based on kernel discriminative sparse representation and weighted KNN is proposed in this paper. A discriminative model is built by introducing kernel category function to KSVD dictionary optimization algorithm, mapping the sparse representation features into high-dimensional space. Then...
The discrete excitation-emission-matrix fluorescence spectra (EEMS) at 12 excitation wavelengths (400, 430, 450, 460, 470, 490, 500, 510, 525, 550, 570, and 590 nm) and emission wavelengths ranging from 600–750 nm were determined for 43 phytoplankton species. A two-rank fluorescence spectra database was established by wavelet analysis and a fluorometric discrimination technique for determining phytoplankton...
In this study, a fluorescence spectra discrimination technique for red tide algae by Wavelet packet transform was developed. The fluorescence excitation-emission spectra were determined by fluorescence spectrophotometer for 24 red tide algae. Then the coefficient vectors (candidate feature spectra) were obtained by decomposition of Coiflets-2 wavelet packet. Bayesian discrimination was applied to...
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