Related to aliasing:Anti aliasing aliasing [′āl·yəs·iŋ] (computer science) In computer graphics, the jagged appearance of diagonal lines on printouts and on video monitors. (mathematics) Introduction of error into the computed amplitudes of the lower frequencies in a Fourier analysis of...
This article provides information about Anti-Aliasing Filters and explains why they are used. Introduction to Anti-Aliasing Filters According to the Nyquist sampling theorem, the sampling rate should be at least twice the maximum frequency component of the signal of interest. In other words, the...
Subpixel Morphological Anti-Aliasingis an image-based GPU-based implementation of Morphological antialiasing, or MLAA. The algorithm detects borders in the resulting image and then finds specific patterns in these. Anti-aliasing is achieved by blending pixels in these borders, according to the pattern...
An illustration of an anti-aliasing filter being applied to a raw signal is shown below. Say that you want to samplef1andf2only. Note thatf3lies in the transition band of the filter. Thus, the undesired frequencyf3has been attenuated but its attenuated image still is ...
INTRODUCTION When we try to draw a line on a low resolution screen , we are certainly to see the ugly jagged "stair-steps", this is because the screen does not have a enough resolution to display a line smoothly. Anti-aliasing is a way to use color information to make up for a lack...
Finally, some of the interactions between limiting resolution and frequency response shape for still and moving images are explained.Roger R. A. MortonEastman Kodak Co.Michelle A. MaurerChristopher L. DuMontSMPTE JournalR. A. Morton, M. A. Maurer,C. L. DuMont. An introduction to aliasing ...
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This paper analyzes the cause of frequency aliasing when sampling the low frequency signal of geoelectricity and brings forward the arithmetic of nume ric filter which has practical meaning. Based on this principle, the anti-alias ing filter which makes use of cascade decimation was designed.The ...
Reverse-time migration (RTM) antialiasingWe reformulate the equation of reverse-time migration so that it can be interpreted as summing data along a ... Z Ge,D Wei,Z Min,... - 《Geophysical Prospecting》 被引量: 16发表: 2014年 Fast Anti-Aliased Kirchhoff Migration and Modeling Reverse-tim...
and decoder paths. The encoder incorporates an anti-aliasing layer and convolutional blocks to reduce the spatial resolution of input images while avoiding shift equivariance. The decoder uses an attention block and decoder module to capture prominent features in each channel. To address data-related ...