نتایج جستجو برای: de-aliasing
تعداد نتایج: 1535266 فیلتر نتایج به سال:
As modern microprocessors employ deeper pipelines and issue multiple instructions per cycle, they are becoming increasingly dependent on good branch prediction. During the past ve years, researchers have shown that branch-prediction accuracy can be improved by basing predictions on the outcome of previous branches. Many such methods have been proposed, but they all share a common characteristic...
میدان گرانی حاصل از مشاهدات گرانیسنجی ماهوارهای مانند GRACE شامل خطاهایی ناشی از نوفة دستگاهی، نمونهبرداری مکانی ناهمسانگرد (anisotropic) و خطای تداخل سیگنال (aliasing) و زمانی ناشی از نقص مدلسازی تغییرات جرم کوتاهمدت زمین است. کیفیت مشاهدات GRACE در مأموریت GRACE-FO بهبود یافت، اما خطای تداخل سیگنال زمانی همچنان یک عامل تأثیرگذار بر گرانی محاسباتی از مشاهدات میباشد. به همین دلیل محاسبه ...
We present and illustrate a new technique, Image Correlation Supersampling (ICS), for resampling volume data that are undersampled in one dimension. The resulting data satisfies the sampling theorem, and, therefore, many visualization algorithms that assume the theorem is satisfied can be applied to the data. Without the supersampling the visualization algorithms create artifacts due to aliasin...
In object-oriented (OO) programming, variables do not contain objects directly but ad-dresses of objects on the heap. Thus, several variables can point to the same object; wecall this aliasing.Aliasing is a central feature of OO programming that enables efficient sharing of objectsacross a system. This is essential for the implementation of many programming idioms,such as it...
For moderate and high speed values of the sea surface current, an aliasing phenomenon, due to an under-sampling in the time-domain, can strongly affect the reconstruction of the sea surface elevation derived from X-band radar images. Here, we propose a de-aliasing strategy that exploits the physical information provided by the dispersion law for gravity waves. In particular, we utilize simplify...
Interlacing causes complications in many image processing tasks. Theoretically, interlacing can be perfectly undone, but there remain a few difficulties in de-interlacing. Aliasing is an inherent artifact due to the interlaced sampling of video data. Interlacing also causes the loss of vertical resolution in the video. Motion in the video scenes need to be modelled accurately for the removal of...
The Brown aliasing error upper bound in the sampling cardinal series expansion (SCSE) of weakly stationary non-bandlimited (NBL) stochastic processes is extended to NBL homogeneous random fields (HRF). The magnitude of the derived bound is ordered under some smoothness condition upon the field. Zusammenfassung. Die Brown'sche Abschitzung der Obergrenze von Aliasing Fehlern bei der Abtastung von...
Subtype relationships in object-oriented programming languages are studied to aid code reuse and reasoning about programs that use subtype polymorphism. We de ne what it means for one abstract data type to be a subtype of another. This de nition allows for both mutation and aliasing. This work gives intuition for programmers and guidance to language designers.
one of the common problems in reflective seismic records is the existence of coherent linear and random noises which cause covering of the most important parts of reflective signals; therefore, it is necessary to attenuate them by processing methods. several processing techniques have been devised for attenuation of coherent linear noises and linear radon or ?-? transform is a powerful techniqu...
Linear type systems permit programmers to deallocate or explicitly recycle memory, but are severely restricted by the fact that they admit no aliasing. This paper describes a pseudo-linear type system that allows a degree of aliasing and memory reuse as well as the ability to de ne complex recursive data structures. Our type system can encode conventional linear data structures such as linear l...
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