Lanczos kernel for image resizing (imresize function)

Hi!

I would like to know how the lanczos2 kernel works in imresize function.

Also does anyone know if there is a reference that I can use in a scientific publication?

Thanks!

Answer 1

[Rohit Pappu]

The Lanczos-2 algorithm precalculates the coefficients based on the resize factor. The model calls the lanczos2_coeffi.m script to calculate and store these coefficients. The script calculates the Lanczos-2 coefficients using 6 taps and 32 phases.

Additional documentation and references can be found here