I want to use the LabVIEW 1d median filter function for 2d array (image) application. Vision does not have this function (or I cannot find it [using Vision 8.5]). I am assuming I can apply the 1d median filter across the rows, then transpose the array, and apply again to the rows (really the columns but now rows because of transposition). Just like for using the 1d FFT for 2d FFT. Is this strategy correct? Thanks, Don

It is there - IMAQ NthOrder under Image Processing:Filters. By default, it takes the middle number of a 3x3 region around each pixel, but can be set to be the largest, smallest, or any rank in between. Also has the flexibility of defining the size of the filter, although being a non-linear filter (hence why it's not separable as you suggest) the time required increases significantly.