Hi Sarah, Let me know if you would like to drink less coffee:
$ time rank sub med 121 7321 in = sub out = med nlin = 2004 ncol = 2006 size = 121 x 121 rank = 7321 real 0m2.518s user 0m2.480s sys 0m0.016s (but it can handle only odd sizes, not 120x120) Ben ________________________________________ From: [email protected] [[email protected]] on behalf of Sarah Arnold [[email protected]] Sent: Wednesday, April 24, 2013 16:32 To: [email protected] Subject: Re: [Jchat] J for Image Processing Hi Ben Yes, in mathematica it takes approximately 2 minutes to do the 13x13 medianfilter for a 2004 x 2006 picture... I usually use much bigger boxsizes (about 120x120), so I can pick up a coffee while the program is running. What you write about your use of J sounds promising to me. I ordered the book from Reiter in the library and will have a look at it. The tutorials you mentioned: are they somehow available? Thanks a lot for your answers! ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
