MATLAB: Downsampling the filtered image

Question

i have iteratively filtered the image using low pass filtering. now i need to downsample the filtered images. how to implement?

Answer 1

By indexing, perhaps, e.g.,

 x=1:10;
 xdownsampled=x(1:2:end);

Or, if downsampling at non-integer locations, by interpolation. See griddedInterpolant().