Removing noise from audio signals requires a non diagonal processing of time-frequency coefficients to avoid producing “Musical noise”. State of the art algorithms perform a parameterized filtering of spectrogram coefficients with empirically fixed parameters. A block thresholding estimation procedure is introduced, which adjusts all parameters adaptively to signal property by minimizing a Stei...

SURE-LET Approach is used for reducing or removing noise in brain Magnetic Resonance Images (MRI). Removing or reducing noise is an active research area in image processing. Rician noise is the dominant noise in MRIs. Due to this type of noise, the abnormal tissue (cancerous tissue) may be misclassified as normal tissue and introduces bias into MRI measurements that can have significant impact ...

A procedure for detecting outliers in regression problems is proposed. It is based on information provided by boosting regression trees. The key idea is to select the most frequently resampled observation along the boosting iterations and reiterate after removing it. The selection criterion is based on Tchebychev’s inequality applied to the maximum over the boosting iterations of ...

The Environmental Protection Agency (EPA) and U.S. Geological Survey (USGS) initiated a two-year regional pilot survey in 2007 to develop, test, and validate tools and approaches to assess the condition of northern Gulf of Mexico (GOM) coastal wetlands. Sampling sites were selected from estuarine and palustrine wetland areas with herbaceous, forested, and shrub/scrub habitats delineated by the ...

The removal of speckle noise in three-dimensional (3D) echocardiography is required for better analysis of the image and proper diagnosis and thus an important step in pre-processing. This paper proposes a new algorithm for removing the speckle noise which utilizes Von Neumann neighborhood concept. The application of three dimensional connectivity theories would reduce the noise to a certain ex...

Real-world data is virtually never noise-free. Current methods for handling noise do so either by removing noisy instances or by trying to clean noisy attributes. Neither of these deal directly with the issue of noise and in fact removing a noisy instance is not a viable option in many real systems. In this paper, we consider the problem of noise in the context of record linkage, a frequent pro...