I’m looking for advice about implementing simple quadratic and cubic interpolations into Interpolations.jl. These are interpolation methods that should work similar to linear interpolation, with no pre-filtering necessary and values computed straight from the original data. The paper “Quadratic Interpolation for Image Resampling” (Dodgson 1997) has the formulas. What are the required steps to implement a new method like this? Would that really be the best package to contribute this in the first place?
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Hi! My suggestion is also to look into DataInterpolations.jl. They already have quadratic and cubic interpolators (and it should work nicely with AD systems).
Notice that this is meant to be a 1D interpolation package, don’t know whether this meets your requirements.
That looks cool, but I am indeed interested in interpolating images, and I’m not sure how easy is to do that with any other package.