Noise suppression-guided image filtering for low-SNR CT reconstruction In practical computed tomography (CT) applications, projections with low signal-to-noise ratio (SNR) are often encountered due to the reduction of radiatio... Y He,L Zeng,WGC Yu - 《Medical & Biological Engineering & Computin...
This method improves the appearance of an image to the human eye, more than a measurable mathematical factor such as the noise reduction factor. Recursive filtering is an important tool to reduce noise on images. The great advantage of recursive filtering is that the realization is not very ...
Finally the adaptive filtering process is adopted to eliminate the noise effectively. The experimental results show that the proposed scheme can reduce the harmonic distortion signal and the noise signal. The suppression capability of the harmonic distortion signals at 1000 Hz is about 19 dB, and ...
In this paper, we propose a noise reduction method and an adaptive contrast enhancement for local tone mapping (TM). The proposed local TM algorithm compresses the luminance of high dynamic range (HDR) image and decomposes the compressed luminance of HDR image into multi-scale subbands using th...
1) adaptive filtering/active noise reduction system 自适应滤波/有源降噪系统2) adaptive filtering system 自适应滤波系统 1. The design of high-speed sampling and adaptive filtering system based on asynchronous FIFO; 基于异步FIFO的高速采样自适应滤波系统的设计 更多例句>> 3) adaptive filtering noise...
A novel method is proposed to reduce speckle by a fast logistic adaptive non-local means (LA-NLM) algorithm. In the proposed method, the logistic function is incorporated into the weight calculation of the NLM algorithm to account for multiplicative speckle noise. Filtering paramet...
1) adaptive stack median filtering 自适应层叠中值滤波1. Then an adaptive stack median filtering method is adopted to remove the impulse noise,and an adaptive local filtering method based on the estimation of local squared error is used to suppress the Gauss noise. 首先将受脉冲噪声和高斯噪声...
Various melodic noise filtering techniques viz. Adaptive Noise Cancellation, Spectral Methods and Deep Learning algorithms have been employed to filter music signals corrupted with additive Gaussian white noise. The noise reduction problem has been formulated as a filtering problem which is efficiently solv...
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The phase-only SLM is placed in the sample conjugate plane for wavefront shaping, while the DF mask is placed in the Fourier plane for spatially filtering the unscattered light. The illumination light intensity on the sample can be changed with a neutral density (ND) filter placed in front ...