Thresholding is the process that converts a micrograph into a binary black and white image, corresponding to particle and background. It does so by setting a threshold for pixel brightness. “Image ...

Abstract X-ray computed tomography is an efficient method for quantitatively estimating the characteristics and heterogeneity of shales in three dimensions. A threshold is commonly used to separate ...

Wavelet threshold algorithms replace small magnitude wavelet coefficients with zero and keep or shrink the other coefficients. This is basically a local procedure, because wavelet coefficients ...

The image shows a slice of a numerical model for dark matter (grey points) and galaxies. Two types of galaxies are shown: bright emission line galaxies (filled circles) and those galaxies hosted by ...