Hello David -- Thank you for your compliment and sharing your work - but these lists do not accept e-mail attachments - they are automatically removed. You will have to find a web page and upload your work there, and share the links. You might also be interested in sending the links to gimp-users list, so as to reach a broader audience. As for the filters: They are pure mathematical operations, and are actually simple in nature. They are specific kernel convolution operators (at least most of them - maybe one or other of GIMP's algorithms include some other step, like coloring up the results). You can read more about this type of operation here: http://en.wikipedia.org/wiki/Kernel_(image_processing) And most importantly - you can try different custom convolutions in GIMP using the generic convolution filter you can find at "Filters->Generic>Convolution Matrix" Regards, js On 2 March 2015 at 14:22, Rosenthal, David <drosen@xxxxxxxxxxxxxxx> wrote: > Hi, I have been using GIMP for about 5 years and love working with it. > Thank you to all who have made this wonderful tool possible. > I use the edge detection filter a lot on cloud formations. Sometimes I get > results so fantastic, I wonder if there is any 'intelligence' coded into > the filter to create meaningful forms out of random data, or , is it really > finding something that we can't see. I enclose a couple of particularly > apocalyptic results. > I've tested many combinations , including applying equalization, levels, > invert etc but the best results are a simple NEON edge filter with settings > of 9/.3. > I am attaching the original photos and their 'neoned' results (using the > Spencer Kimball plugin - which gives simiar results to directly running the > Neon Edge Filter in GIMP 2.8). I reduced the size to make the overall email > smaller. (All photo's by the way are unretouched, including ...1846 which > seems to show a few weird things in the original photo: person sitting on > cloud reading a book at about 3 o'clock along with something billowing out > clouds.) > Is it just me that gets these apocalyptic images ? (not just from clouds > too!) > I would be interested in any comments you may have on this Is question. > Thank you very much. > > *- david * > > > > > > *Regards,David Rosenthal* > _______________________________________________ > gimp-developer-list mailing list > List address: gimp-developer-list@xxxxxxxxx > List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list > List archives: https://mail.gnome.org/archives/gimp-developer-list _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
