Traditional noise removal methods like Non-Local Means create spurious boundaries inside regular zones. Visushrink removes too many coefficients and yields recovered images that are overly smoothed. In Bayesshrink method, sharp features are preserved. However, PSNR (Peak Signal-to-Noise Ratio) is considerably low. BLS-GSM generates some discontinuous information during the course of denoising a...

This paper has mainly discussed the influence on society and culture of engineering demolition, by analyzing constraint problems of engineering demolition starting with noise pollution, dust pollution, hidden danger and cultural value loss, of which the reasons have been expounded and some corresponding countermeasures have been proposed.

We develop the exact constant of the risk asymptotics in the uniform norm for density estimation. This constant has first been found for nonparametric regression and for signal estimation in Gaussian white noise. Hölder classes for arbitrary smoothness index β > 0 on the unit interval are considered. The constant involves the value of an optimal recovery problem as in the white noise case, but ...

for patients with severe respiratory failure. Although the technology has advanced in recent times, the noise levels produced by such devices remain high. Exposure to excessive noise in intensive care may cause hearing problems for both staff and patients following long-term exposure. We investigated the noise level in decibels produced by a SensorMedics 3100B ventilator (SensorMedics, Bilthove...

In mixed-signal designs, substrate coupling of digital circuit noise can severely compromise the behavior of sensitive analog circuits. Proper characterization of substrate noise is therefore indispensable. In this paper, we present an experimental setup for the characterization of directly coupled substrate noise in bulk-type CMOS. We have integrated configurable substrate noise generation and...