نتایج جستجو برای: masks
تعداد نتایج: 9474 فیلتر نتایج به سال:
Deep neural networks (DNNs) are often used to tackle the single channel source separation (SCSS) problem by predicting time-frequency masks. The predicted masks are then used to separate the sources from the mixed signal. Different types of masks produce separated sources with different levels of distortion and interference. Some types of masks produce separated sources with low distortion, whi...
As process technology scales, the design effort and Non-Recurring Engineering (NRE) costs associated with the development of Integrated Circuits (ICs) is becoming extremely high. One of the main reasons is the high cost of preparing and processing IC fabrication masks. The design effort and cost can be reduced by employing Structured Application-Specific ICs (Structured ASICs). Structured ASICs...
An ideal coronagraph with a band-limited image mask can efficiently image off-axis sources while removing identically all of the light from an on-axis source. However, strict mask construction tolerances limit the utility of this technique for directly imaging extrasolar terrestrial planets. We present a variation on the basic band-limited mask design—a family of “notch filter” masks—that mitig...
We study the convergence of multivariate subdivision schemes with nonnegative finite masks. Consequently, the convergence problem for the multivariate subdivision schemes with nonnegative finite masks supported on centered zonotopes is solved. Roughly speaking, the subdivision schemes defined by these masks are always convergent, which gives an answer to a question raised by Cavaretta, Dahmen a...
BACKGROUND In multiple sclerosis (MS), brain atrophy quantification is affected by white matter lesions. LEAP and FSL-lesion_filling, replace lesion voxels with white matter intensities; however, they require precise lesion identification on 3DT1-images. AIM To determine whether 2DT2 lesion masks co-registered to 3DT1 images, yield grey and white matter volumes comparable to precise lesion ma...
In the event of an influenza pandemic, where effective vaccine and antiviral drugs may be lacking, disrupting environmental transmission of the influenza virus will be the only viable strategy to protect the public. We discuss 2 such modalities, respirators (face masks) and ultraviolet (UV) light. Largely overlooked, the potential utility of each is underappreciated. The effectiveness of dispos...
We propose in this paper an original approach to build masks in the framework of missing data recognition. The proposed soft masks are estimated from the models themselves, and not from the test signal as it is usually the case. They represent the intrinsic robustness of model’s log-spectral coefficients. The method is validated with cepstral models, on two synthetic and two real-life noises, a...
An article on codiagnosability verification of discrete event systems was reported in [1], claiming an improvement in complexity over [2]. This note clarifies an oversight in the complexity analysis of [1]. Further the results of [1] were obtained in a more restricted setting of “projection masks”, in contrast to the more general “nonprojection masks” allowed in [2], which was overlooked. Final...
A method is presented to tune the holes in colloidal masks used for nanolithography. Using a simple wet-chemical method, a thin layer of silica is grown on masks of silica particles. The size of the holes is controlled by the amount of tetraethoxysilane (TEOS) added. More accurate tuning of the hole size is possible in the presence of a calibrated seed dispersion of silica colloids. We demonstr...
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