I tried the patch in the Camera Data article. The idea is cool but I cannot understand the median-image, median-difference subpatch in the media-motion patch.

I have no idea what "jit.op@ >", "jit.op@< ", "jit.op@op* *val 0.001" are doing. Could anyone help explain to me ?

http://cycling74.com/download/articles/tutorials/cameradata_ab.zip

Thank you so much.