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Automated ultrasonic signal classification systems are finding increasing use in many applications for the recognition of large volumes of inspection signals. Wavelet transform is a well-known signal processing technique in fault signal diagnosis system. Most of the proposed approaches have mainly used low-level handcraft features based on wavelet transform to encode the information for different...
In order to solve the issue how Duct Cleaning Robot senses the unknown duct environment, an environmental feature extraction method based on visual information is proposed. This method detects the edge of environmental images using the wavelet modulus maximum(wmm), and then extracts the geometric features of those images by Hough transformation. Finally, feed forward Back-Propagation Neural Network(BPNN)...
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