Alias-Free Sampling of Random Noise
نویسندگان
چکیده
منابع مشابه
Computable Fourier Conditions for Alias-Free Sampling and Critical Sampling
We propose a Fourier analytical approach to the problems of alias-free sampling and critical sampling. Central to this approach are two Fourier conditions linking the above sampling criteria with the Fourier transform of the indicator function defined on the underlying frequency support. We present several examples to demonstrate the usefulness of the proposed Fourier conditions in the design o...
متن کاملInterband Alias-Free Subband Adaptive Filtering with Critical Sampling
Adaptive Filtering is an important concept in the field of signal processing and has numerous applications in fields such as speech processing and communications. An Adaptive filter is a filter that self-adjusts its transfer function according to an optimizing algorithm. Because of the complexity of the optimizing algorithms, most adaptive filters are digital filters that perform digital signal...
متن کاملAliasing-Free Blue Noise Sampling
In this paper we revisit the problem of blue noise sampling with a strong focus on the spectral behavior of the sampling patterns. We use the mathematical relationship between the radial power spectrum and the radial distribution function to synthesize two types of blue noise patterns: ideal blue noise patterns that have a power spectrum in form of a step function and produce almost no coherent...
متن کاملTowards Alias-Free Pointers
This paper argues that pointer-induced aliasing can be avoided in many cases by means of a concept of unique pointer. The use of such pointers is expected to fortify the concept of encapsulation, to make systems easier to reason about, to provide better control over the interaction between threads, and to make storage management safer and more ef-cient. We show that unique pointers can be imple...
متن کاملAlias-Free Shadow Maps
In this paper we abandon the regular structure of shadow maps. Instead, we transform the visible pixels P(x,y,z) from screen space to the image plane of a light source P′(x′,y′,z′). The (x′,y′) are then used as sampling points when the geometry is rasterized into the shadow map. This eliminates the resolution issues that have plagued shadow maps for decades, e.g., jagged shadow boundaries. Inco...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Society for Industrial and Applied Mathematics
سال: 1960
ISSN: 0368-4245,2168-3484
DOI: 10.1137/0108013