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Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. De-noising of heart sound signals, therefore, forms the primary basis for achieving non-invasive diagnosis of coronary heart disease. This paper proposes the wavelet Transform method for de-nosing heart sound signals, which has yielded satisfactory results...
Wavelet technology in image fusion has a good convergence effect compared with other fusion method. The main impact factors of image fusion effects were wavelet function and wavelet decomposition layers. According to the wavelet transform theory, infrared and visual light images were decomposed 1-5 layers respectively by using different wavelet function; and then under the principle of inverse wavelet...
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