An Improved High-Resistance Fault Detection Method in DC Microgrid Based on Orthogonal Wavelet Decomposition

Ground Fault Location of Cable Using Wavelet in DC Microgrid

An Improved Image Fusion Algorithm Based on Wavelet Decomposition

A new image fusion method based on wavelet transform and edge keeping method is proposed in this paper in order to enhance the fusion efficiency and improve fusion accuracy. This algorithm deals with wavelet coefficients of low frequency and high frequency differently in light of their own properties, and obtains the final fused image by inverse wavelet transform. The experimental results of mu...

An evolutionary lifting scheme Wavelet Packet Decomposition method for mechanical fault detection in elevator systems

The design procedure of a second-generation wavelet packet decomposition, based on an evolutionary approach, is introduced for industrial fault detection. The procedure has been validated by means of an experimental case study for an induction motor used as traction machine in an elevator system. Preliminary results on three mechanical faults related to ball-bearing show encouraging performance.

An Improved Speech Enhancement Method based on Teager Energy Operator and Perceptual Wavelet Packet Decomposition

According to the distribution characteristic of noise and clean speech signal in the frequency domain, a new speech enhancement method based on teager energy operator (TEO) and perceptual wavelet packet decomposition (PWPD) is proposed. Firstly, a modified Mask construction method is made to protect the acoustic cues at the low frequencies. Then a level-dependent parameter is introduced to furt...

An improved wavelet-based corner detection technique

In this paper an improved, wavelet-based technique for comer detection, in 2-D planar curves, is presented. This boundary based technique is simple to implement and computationally efficient and exploits wavelet transform modulus maxima (WTMM) to detect comers. The proposed algorithm is robust with respect to object geometry. We also report results under AWGN noise.