noise variance

According to the characters of CBCT image, we proposed the noise variance estimation formula.

根据CBCT图像的特点，提出了适合CBCT图像的噪声方差估计公式，使其更适合CBCT图像噪声的去噪。

A Target Tracking Filter with Unknown Time-varying System Noise Variance

一种带未知时变系统噪声水平的目标跟踪滤波器

With covariance matching technique and innovation information of filtering, the noise variance is dynamically adjusted and the mean square error of the fusion system always keeps minimum.

该算法采用协方差匹配技术，依据滤波新息，动态调整测量噪声方差，使融合系统的均方误差始终最小。

The threshold of each leaf is calculated through the variance of each and the estimated noise variance of the entire image.

通过每一叶节点以及整个图像的噪声的估计方差变化计算叶节点阈值。

Non-local Means Image Denoising in Wavelet Domain with Unknown Noise Variance

噪声方差未知的小波域中非局部均值图像去噪

Dynamic compensation based on noise variance estimation and model reference for sensors

基于噪声方差估计和模型参考的传感器动态补偿