Tian-hua Chen

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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;(More)
Abstrac:Presented a new method of recognizing and sorting of heart sound signal, using heart sound signal analysis and improved back propagation artificial Neural Network. Firstly, the heart sound signal has to be digitally filtered to eliminating the noise. The neural network adopted is improved back propagation three-layer artificial Neural Network, with(More)
Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. Accordingly we design a heart sound detection system based on the new XH-6 sensor to collect the slight heart sound signals, to display in real-time and to save the phonocardiogram. Measurement on different(More)
This paper studies the basic structure and principles of the three degrees of the freedom turntable system, and establishes its mathematical model. It describes the design theory and procedures of the variable structure control system, presents a new design method of the variable structure control (VSC) of electrical-hydraulic turntables, analyzes in theory(More)
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(More)
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