Keyword Spotting in Continuous Speech Using Spectral and Prosodic Information Fusion

Pandey, Laxmi; Hegde, Rajesh M.

doi:10.1007/s00034-018-0990-6

Cited by 5 publications

(1 citation statement)

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“…e reliability of the modeling method is demonstrated through the four-point bending test. Relevant scholars used membrane elements to simulate the PVB layer, established a finite element model of laminated glass, fitted the experimental stress-strain curve of PVB with the constitutive relationship of Blatz-Ko, Mooney-Rivlin, and Ogden materials, and fitted the fitted model [14]. Brought into the laminated glass material card, the test of the headshaped impactor impacting the windshield glass without the characteristics of the broken and cracked glass at the road traffic accident site was carried out.…”

Section: Related Workmentioning

confidence: 99%

Feature Extraction of Broken Glass Cracks in Road Traffic Accident Site Based on Deep Learning

Shu

2021

Complexity

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This paper studies the feature extraction and middle-level expression of Convolutional Neural Network (CNN) convolutional layer glass broken and cracked at the scene of road traffic accident. The image pyramid is constructed and used as the input of the CNN model, and the convolutional layer road traffic accident scene glass breakage and crack characteristics at each scale in the pyramid are extracted separately, and then the depth descriptors at different image scales are extracted. In order to improve the discriminative power of the depth descriptor, Hellinger kernel and Principal Component Analysis (PCA) are used to perform nonlinear and linear transformations. Two aggregation strategies based on depth descriptors are proposed to form a global image representation. The classification experiment of the data set shows that Hellinger kernel, PCA transformation, and two aggregation strategies are all conducive to improving the classification accuracy. In addition, the convolutional layer road traffic accident scene glass breaking and crack feature coding can obtain better classification performance than the fully connected layer feature. We conducted dynamic impact tests on plate glass and Polyvinyl Butyral- (PVB-) laminated glass under different boundary conditions and studied the crack propagation and failure process of the glass under different impact speeds. The results show that there are radial cracks and circular cracks on the glass specimens under the impact load; the glass specimens show partial damage under high-speed impact and the characteristics of glass breaking and cracks at the scene of road traffic accidents; the four-frame plate glass is supported by sharp dagger-like fragments. This paper compares the energy absorption of glass specimens under different boundary conditions. The results show that the energy absorption effect of the four-point supporting glass specimen is generally stronger than that of the four-frame supporting glass.

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Section: Related Workmentioning

confidence: 99%