3 ms·
Sinc is closely related to Bessel functions (which is what the Airy disc is). In image processing afaik it is interpreted as a radially-symmetric filter, if it'
by theoh 8y ago
Sinc is closely related to Bessel functions (which is what the Airy disc is). In image processing afaik it is interpreted as a radially-symmetric filter, if it's not just used as if it was separable (i.e. on the x axis, then on the y axis).
I don't think it is exactly the same as the Airy disc, but it's a good question. http://mathworld.wolfram.com/SincFunction.html http://mathworld.wolfram.com/SincFunction.html
- jacobolus 8y agoThere isn’t really any perfect choice for images with a square lattice of sample points. With a one-dimensional signal you don’t get the same annoying patterns from the interaction of the two grids along different dimensions. If you use a equilateral triangle grid (if you like, think of hexagonal pixels) you can do better.