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A new method of heart rate variability signal analysis based on Hilbert-Huang Transform (HHT) is proposed. Use EMD (Empirical Mode Decomposition) method to decompose signal into a series of IMF (Intrinsic Mode Function). By means of the given boundary conditions and EMD decomposition termination conditions, calculate and analyze instantaneous frequency and instantaneous amplitude of each IMF using...
In this paper, we present a novel approach to detect microcalcifications (MCCs) in the mammograms. Microcalcification has approximately a size of several pixels in diameter on early cancer mammograms and has low contrast. So it is difficult to detection the microcalcifications. The essential idea of propose approach is to apply morphological and wavelet transform to locate the micro calcifications...
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