吴炬卓,牛海清.一种应用小波系数GSM模型的混合傅里叶-小波电缆瓷套终端红外图像去噪方法[J].电测与仪表,2018,55(4):113-117. WU Ju-zhuo,NIU Hai-qing.A Hybrid Fourier-wavelet De-noising Method for Infrared Image of Porcelain Sleeve Cable Terminal Using GSM Model for Wavelet Coefficients[J].Electrical Measurement & Instrumentation,2018,55(4):113-117.
一种应用小波系数GSM模型的混合傅里叶-小波电缆瓷套终端红外图像去噪方法
A Hybrid Fourier-wavelet De-noising Method for Infrared Image of Porcelain Sleeve Cable Terminal Using GSM Model for Wavelet Coefficients
In order to remove the white noise of infrared image effectively and improve the accuracy of infrared diagnosis of electrical equipment, a hybrid Fourier-wavelet de-noising method is used to process the infrared image of porcelain bushing cable terminal in this paper. The main steps of the proposed method are as follows. The noisy image is first processed in the Fourier domain by using the Wiener filter. Then in wavelet domain, the wavelet coefficients are modeled by using the Gaussians Scale Mixtures model which considers the statistical properties of wavelet coefficients. Finally, the processed wavelet coefficients are used to reconstruct the signal and get the final de-noising image. Simulation results indicate that the infrared image de-noising effect can be effectively improved by using the de-noising method in this paper.
