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Items for "wavelet"
Frequency modulation between low- and high-frequency components of the heart rate variability spectrum
Interactions among physiological mechanisms are abundant in biomedical signals, and they may exist to maintain efficient homeostasis...
Keywords: Amplitude modulation, nervous systems, non-linear interaction, parasympathetic, sympathetic, wavelet
10/2006 | Biomedizinische Technik, Walter de GruyterPine and spruce roundwood species classification using multivariate image analysis on bark
Wood discs from 67 pine and 79 spruce logs were collected from a forest clearing. Three different 24-bit red-green-blue (RGB) images were acquired from the radial surface of each disc...
Keywords: bark, co-occurrence matrix, multivariate image analysis, partial least squares projection to latent structures (PLS), pine, spruce, wavelet, wood species
11/2005 | Holzforschung, Walter de Gruyter