Page 2 of 2

Re: Cactus world

Posted: Sat Jun 12, 2021 9:07 am
by Aiko
Stuart wrote: Sat Jun 12, 2021 9:02 am The photo on the front cover had me stumped - all I could come up with was a hybrid Copiapoa Krainziana / Cinerea but the background coast didn't fit in.
I would never have guessed this to be a Melocactus too. But a the background does not seem out of place for a Copiapoa? I know them to be coastal plants, usually on cliffs next to the water taking advantage of the water vapour, for many pictures I can remember having seen of Copiapoas. Still it looks more like an Echinocactus or Parodia to me...

Re: Cactus world

Posted: Sat Jun 12, 2021 10:12 am
by el48tel
ralphrmartin wrote: Fri Jun 11, 2021 8:48 pm Thanks Teg!

Interesting article Terry. Some of my colleagues in my research group Cardiff University worked on nonphotorealistic rendering - computer algorithms that take in a photo, and automatically re-render it in an "artistic" style.

Below are one or two results from one of my photos; if anyone else wants to try, you can upload your own photos at
https://www.cs.cf.ac.uk/npr/

t56b36390bce2b31ee163.gif
i56b36390bce2b31ee163.gif
b56b36390bce2b31ee163.gif
Certainly a most interesting divertissement

Re: Cactus world

Posted: Sat Jun 12, 2021 10:28 am
by Phil_SK
Stuart wrote: Sat Jun 12, 2021 9:02 am The photo on the front cover had me stumped
I couldn't work out what it was when I first saw it either... even though it was me who'd done the layout for Paul's article! :lol:

Re: Cactus world

Posted: Sat Jun 12, 2021 4:37 pm
by ralphrmartin
MatDz wrote: Sat Jun 12, 2021 12:06 am This is really interesting Ralph, thank you for sharing! I didn't read the details, but it feels very similar to the style transfer in deep learning area: https://www.tensorflow.org/tutorials/ge ... e_transfer
My colleagues did this quite a while before deep learning became fashionable. Indeed Paul Rosin, the main chap, has even co edited a book about it:

Image and Video-Based Artistic Stylisation
by Paul Rosin, John Collomosse
Springer 2012

But I suspect we are now getting a bit far from C&S...

Re: Cactus world

Posted: Sat Jun 12, 2021 4:46 pm
by Tina
That Melo is on my wish list now, white spines & white cephaleum, what's not to lust after.