This paper presents a fast volume rotation technique based on binary shear-warp factorization. Unlike many acceleration algorithms this method does not trade image quality for speed and does not require any specialized hardware either. In order to skip precisely the empty regions along the rays to be evaluated a binary volume is generated indicating the locations of the transparent cells. This ...

A conventional automatic speech recognizer does not perform well in the presence of multiple sound sources, while human listeners are able to segregate and recognize a signal of interest through auditory scene analysis. We present a computational auditory scene analysis system for separating and recognizing target speech in the presence of competing speech or noise. We estimate, in two stages, ...

We address the problem of separating two audio sources from a single channel mixture recording. A novel method called Multi Layered Random Forest (MLRF) that learns a binary mask for both the sources is presented. Random Forest (RF) classifiers are trained for each frequency band of a source spectrogram. A specialized set of linear transformations are applied to a local time-frequency (T-F) nei...

We propose a number of pre-distorted mask design techniques for binary and phase-shifting masks. Our approach is based on modeling the imaging mechanism of a stepper by the Hopkins equations and taking advantage of the contrastenhancement characteristics of photoresist. Optimization techniques such as the branch and bound algorithm and simulated annealing algorithm are used to systematically de...

In this work the method of masks, creating and using of inverted image masks, together with binary operation of image data are used in edge detection of binary images, monochrome images, which yields about 300 times faster than ordinary methods. The method is divided into three stages: Mask construction, Fundamental edge detection, and Edge Construction Comparison with an ordinary method and a ...

The half-tone lithography using pixilated chromium masks in a projection stepper is an established technology in microoptics fabrication. However, the projection lithography tool is comparably expensive and the achievable lateral resolution is typically limited. By using pixel diffraction effects, binary and continuous profile lithography with submicron resolution can be installed on a conventi...

Statistical-mechanical modeling of digital halftoning is proposed. The digital halftoning dealt with here is achieved by making use of the threshold mask, and for each pixel, the halftoned pixel is determined as black (set to one) if the original grayscale pixel is greater than or equal to the mask value and is determined as white (set to zero) vice versa. Basically, our method is a kind of the...

Speaker recognition in mobile devices suffers from poor performance in noisy environments, necessitating the use of noisesuppression algorithms. These typically apply time-frequency masks – optimised on the signal statistics – to the noisy signal spectrum, suppressing the noise components while preserving the speech. Studies in the field of speech recognition demonstrate that ideal time-frequen...

The mathematical problem discussed is important for generating test cases in order to debug floating point adders designs. Floating point numbers are assumed to be written as strings of {0, 1} bits, in a format compatible with IEEE standard 754. A mask is a string of characters, composed of {′0′,′ 1′,′ x′}. A number and a mask are compatible if they have the same length and each numerical chara...