Image Sampling

Announcements

Image Scaling

Image sub-sampling

Image sub-sampling

Even worse for synthetic images

Sampling and the Nyquist rate

2D example

Sampling

Reconstruction

"What happens when"

"Anti-aliasing by"

Subsampling with Gaussian pre-filtering

Subsampling with Gaussian pre-filtering

Compare with...

Some times we want many resolutions

Gaussian pyramid construction

Image resampling

Image resampling

Image resampling

Resampling filters

Bilinear interpolation

Slide 23