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Introduction
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Antialiased shifting and resizing
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Antialiased shifting and resizing
Contents
Contents
Introduction
Aliasing
Quantization
Background
Fourier transform
Filtering and convolution
Discrete signals
Fourier transform of discrete signals
Shannon sampling theorem
Discrete convolution
Sampling and reconstruction pipelines
Shifting images
Combination of filtering operations
Discrete implementation
Enlargement and reduction
Fourier zoom property
Reconstruction, zooming, and resampling
Discrete implementation
Implementation considerations
Choice of low-pass filters
Two-dimensional convolution
Edge detection
Denis Zorin
