Logo by CorneliaYoder - Contribute your own Logo!

END OF AN ERA, FRACTALFORUMS.COM IS CONTINUED ON FRACTALFORUMS.ORG

it was a great time but no longer maintainable by c.Kleinhuis contact him for any data retrieval,
thanks and see you perhaps in 10 years again

this forum will stay online for reference
News: Follow us on Twitter
 
*
Welcome, Guest. Please login or register. December 16, 2019, 11:22:42 AM


Login with username, password and session length


The All New FractalForums is now in Public Beta Testing! Visit FractalForums.org and check it out!



 
  Search  

  Slideshow  
Delta DE final testDelta DE - testing the limitsQuaternion test *10378
Delta DE - testing the limits
Previous Image | Next Image
Description: Created using Ultrafractal.

I decided to test the delta DE method even further and figured that the most "regular" object that would show errors most obviously would be a high magnification of the quaternionic Mandy for z^2+c - so here it is rendered at 640*480 exactly as you see it (it's a png).

Magnification: *2.1582312 e12
DE "solid" value: 1 e-13
delta distance: 1.25 e-14

As you can see it's obviously stretching the limits of "double" accuracy - in particular the real axis is scalloped and the rim of the "horn" is markedly uneven.

Anyone with a fast PC and some spare time is invited to have a go at rendering this one with UF's extended precision set to "always" just to compare the result with this render - if you're interested let me know and I'll send you the formula and the parameter file (though be warned on my 3GHz P4HT it took over an hour with extended precision set to "never").

Stats:
Total Favorities: 0 View Who Favorited
Filesize: 410.19kB
Height: 480 Width: 640
Keywords: mandy quaternion deep zoom 
Posted by: David Makin October 22, 2009, 01:17:45 AM

Rating: Has not been rated yet.

Image Linking Codes
BB Code
Direct Link
Html Link
0 Members and 1 Guest are viewing this picture.
Related Images
Delta DE final test


Rating: *****
Filesize: 385.31kB
Date: October 22, 2009, 04:20:02 AM
Comments (2)
By: David Makin
Delta DE test - hypercomplex


Rating: *****
Filesize: 333.67kB
Date: January 06, 2010, 08:37:53 PM
Comments (0)
By: Buddhi
DE testing location


Rating: ****
Filesize: 454.87kB
Date: January 09, 2010, 02:09:44 AM
Comments (0)
By: David Makin
Julia x8 bulb with different iteration limits (N)


Rating: (None)
Filesize: 229.83kB
Date: March 19, 2010, 12:38:27 AM
Comments (0)
By: msltoe
testing


Rating: *****
Filesize: 495.67kB
Date: August 01, 2016, 02:41:42 PM
Comments (1)
By: mclarekin
  Slideshow  

Comments (0) rss

Return to Gallery

Powered by SMF Gallery Pro

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.139 seconds with 27 queries. (Pretty URLs adds 0.006s, 1q)