FiltFilt with variable steps

Hi,
I use Filtfilt function in order to filter a serie of images in the temporal dimension. How ever the real temporal step beteween images is not uniform. The step between image 1 and image 2 is different from the one between image 2 and image 3, and the time step between image 3and image 4 is identical to the one between image 1 and image2.
I would like to know if it is possible to change the code in order to take into account the variability and if yes how to do so.
Thank you

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For most signal processing applications to work (with the exception of nufft and nufftn), the signals must be regularly-sampled. Normally, I would tell youi to use resample to correct for non-uniform samplilng, however I have no idea how it would work (or if it would work) on images, even in a loop resampling pixel-by-pixel, even on a set of 2D grayscale images.

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