Cactus world

For the discussion of topics related to the conservation, cultivation, propagation and exhibition of cacti & other succulents.
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Aiko
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Re: Cactus world

Post by Aiko » Sat Jun 12, 2021 9:07 am

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...
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el48tel
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Re: Cactus world

Post by el48tel » Sat Jun 12, 2021 10:12 am

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
Endeavouring to grow Aeoniums, Aylostera, Echinocereus, Echinopsis, Gymnocalycium, Lithops, Matucana, Rebutia, and Sulcorebutia.
Currently being wooed by Haworthia, attempting hybridisation, and enticed by Mesembs.
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Phil_SK
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Re: Cactus world

Post by Phil_SK » Sat Jun 12, 2021 10:28 am

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:
Phil Crewe, BCSS 38143. Mostly S. American cacti, esp. Lobivia, Sulcorebutia and little Opuntia
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ralphrmartin
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Re: Cactus world

Post by ralphrmartin » Sat Jun 12, 2021 4:37 pm

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...
Ralph Martin
https://www.rrm.me.uk/Cacti/cacti.html
Members visiting the Llyn Peninsula are welcome to visit my collection.

Swaps and sales at https://www.rrm.me.uk/Cacti/forsale.php

My Field Number Database is at http://www.fieldnos.bcss.org.uk
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Tina
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Re: Cactus world

Post by Tina » Sat Jun 12, 2021 4:46 pm

That Melo is on my wish list now, white spines & white cephaleum, what's not to lust after.
Tina

varied collection of succulents and cacti but I especially like Euphorbia's and variegated agaves.

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