Abstract
A general framework for image interpolation in a uniformly spaced image grid is presented. The proposed formulation is suitable for representing fractional (or sub-pixel) pixels as well as integer pixel interpolations. Also, by fitting an interpolation kernel to the grid formulation, finite impulse response filter coefficients can be readily determined for a given sampling interval and filter length. As an example, a four-tap lowpass filter is derived by fitting the Lagrange interpolation kernel to a row (or column) expansion by 2 on integer pixel locations.
| Original language | English |
|---|---|
| Pages (from-to) | 181-182 |
| Number of pages | 2 |
| Journal | Electronics Letters |
| Volume | 49 |
| Issue number | 3 |
| DOIs | |
| State | Published - 31 Jan 2013 |