Department of Electronics & Communication Engineering, Syed Ammal Engineering College, Ramanathapuram, 623 502, India.
Department of Computer Science and Engineering, Syed Ammal Engineering College, Ramanathapuram, 623 502, India.
J Med Syst. 2019 Jul 23;43(9):291. doi: 10.1007/s10916-019-1403-5.
The one of the preprocessing step for hyperspectral imagery is noise reduction. The images are received by the detector and this can be degraded by several factors like atmospherical things and device noises which emit temperature noise, processing noise and explosion noise. There are several strategies are developed already to cut back the signal to noise magnitude relation of the hyperspectral image. However, the stationary noise of the many denoising ways developed cannot be applied on to the gauge boson noise. Thus, the each gauge boson and thermal noise square measure gift within the captured hyperspectral image (HSI). during this paper, we tend to projected a replacement denoising framework known as tensor-based filtering employing a PARAFAC tensor decomposition methodology for scale back each noise. The proposed technique is performs higher in removing noise as compared with different strategies like Multiple linear regression (MLR) algorithm and combined algorithm called multidimensional wavelet transforms with multiway wiener filter (MWPT-MWF) technique. The performance analysis of the new denoising framework has more efficient for reducing signal dependent (PN) and signal independent noise (TN) as compared with other conventional method. Hence this novel denoising approach would be more beneficial for detection of skin allergy and also this algorithm will be very useful for detection of retinal exudates and diagnosis of diabetes mellitus and retinopathy disease in medical application.
高光谱图像的预处理步骤之一是降噪。图像由探测器接收,这可能会受到多种因素的影响,如大气因素和设备噪声,这些噪声会产生温度噪声、处理噪声和爆炸噪声。已经开发了几种策略来降低高光谱图像的信噪比。然而,许多已开发的降噪方法的固定噪声不能应用于规范玻色子噪声。因此,在捕获的高光谱图像(HSI)中存在每个规范玻色子和热噪声。在本文中,我们提出了一种新的降噪框架,称为基于张量的滤波,采用 PARAFAC 张量分解方法来减少每种噪声。与多线性回归(MLR)算法和多维小波变换与多向维纳滤波器(MWPT-MWF)技术相结合的组合算法等其他策略相比,所提出的技术在去除噪声方面表现更好。与其他传统方法相比,新的降噪框架的性能分析在减少信号相关(PN)和信号独立噪声(TN)方面更有效。因此,这种新颖的降噪方法对于皮肤过敏的检测将非常有益,并且该算法在医学应用中对于视网膜渗出物的检测和糖尿病和视网膜病变的诊断也将非常有用。