Title: 3 Layers Post by: Kalles Fraktaler on October 09, 2016, 07:08:29 PM 3 Layers
(http://nocache-nocookies.digitalgott.com/gallery/19/8851_09_10_16_7_08_28.jpeg) http://www.fractalforums.com/index.php?action=gallery;sa=view;id=19694 3 Layer Mandelbrot: 0. Black background 1. Yellow for first pattern layer, lines from the left needle of the main Mandelbrot. 2. Blue for second pattern, as the result of a close passage in the seahorse valley of a minibrot 3. White, as the result of a close passage in the seahorse valley of another minibrot Location: Code:
Title: Re: 3 Layers Post by: claude on October 11, 2016, 06:36:30 AM Wow looks good! How do you pick the distances at which to change colours? I experimented with histograms but couldn't get any clues where to pick the levels (see attached). I guess it's manual aesthetic choice?
I took your location, rendered it as raw floating point distance estimate, fed it through histogram equalisation and used it as depth (and brightness) for a 3D stereo (anaglyph red left eye, green right eye). Here the perceptual layers just come out of the histogram equalisation, but there's not much control over relative depth (just a pow function to push them to one end or the other). (https://mathr.co.uk/mandelbrot/2016-10-11_distance_estimate_histogram_equalized_anaglyph.png) Title: Re: 3 Layers Post by: quaz0r on October 11, 2016, 08:11:42 AM neat! i was gonna look into anaglyph rendering at some point too. i need to invest in a 5$ pair of solid glasses sometime... these paper freebies leave something to be desired ;D
Title: Re: 3 Layers Post by: Kalles Fraktaler on October 11, 2016, 09:28:12 AM Wow looks good! How do you pick the distances at which to change colours? I experimented with histograms but couldn't get any clues where to pick the levels (see attached). I guess it's manual aesthetic choice? Yes it is tweaked for aesthetic, but there is a real connection, as your image shows, between the influence from the close passage of minibrots.I took your location, rendered it as raw floating point distance estimate, fed it through histogram equalisation and used it as depth (and brightness) for a 3D stereo (anaglyph red left eye, green right eye). Here the perceptual layers just come out of the histogram equalisation, but there's not much control over relative depth (just a pow function to push them to one end or the other). (https://mathr.co.uk/mandelbrot/2016-10-11_distance_estimate_histogram_equalized_anaglyph.png) Attached is the palette used. Addition: Perhaps if log is used instead of sqrt, the colors of the palette could have equal sizes... |