Different types of key frame interpolation in Mandelbulber program @xlace

Uploaded May 2021 | Updated September 2026, 2 hours ago

This animation shows different types of key frame interpolation in Mandelbulber program implemented in version 2.26. Linear interpolation is the least smooth. Cubic is the smoothest. Akima is a good compromise in most of situations. Steffen is smooth and has no overshoots.
1. Linear - en.wikipedia.org/wiki/Linear_interpolation
2. Steffen - gnu.org/software/gsl/doc/html/interp.html#c.gsl_interp_steffen
3. Akima - en.wikipedia.org/wiki/Akima_spline
4. Cubic - en.wikipedia.org/wiki/Spline_interpolation#Algorithm_to_find_the_interpolating_cubic_spline
gnu.org/software/gsl/doc/html/_images/interp_compare.png

Comparison: gnu.org/software/gsl/doc/html/_images/interp_compare.png

$IFS Fractal In Space (remastered - 4K) This is a fractal animation rendered using Mandelbulber 1.21 It is remastered version of https://youtu.be/NIWz3BuE4nE http://www.mandelbulber.com It was shown in March 2013 in Olsztyn Palenatium (http://www.planetarium.olsztyn.pl/index.php) as a part of full-dome movie. Music (from YouTube Audioswap): Jonn Serrie - Fantasy Passages - And The Stars Go With You © Copyright 2024 by Krzysztof Marczak Parteon: https://www.patreon.com/krzysztofmarczak My image gallery: http://krzysztofmarczak.deviantart.com/gallery/ Its recommended to watch in 4K resolution because of weak YT video compression quality. Enjoy watching!$ $Flying around 3D Nebulabrot fractal HD$ $Flight through BulbBox fractal$ $IFS fractal with MC DOF$

Mandelbulber v2 OpenCL - test 2 - limited engine

$Mandelbox trip Key-frame animation test in Mandelbulber Animation was rendered using Mandelbulber 0.80 http://sourceforge.net/projects/mandelbulber/ © Copyright by Krzysztof Marczak music from Youtube AudioSwap: Crystal Harmony (Ray Kelley Band) Parteon: https://www.patreon.com/krzysztofmarczak topic on Fractal Forums: http://www.fractalforums.com/movies-showcase-%28rate-my-movie%29/mandelbox-trip-with-new-camera-control/new/?topicseen#new Mandelbox reference: http://www.fractalforums.com/3d-fractal-generation/amazing-fractal/$

$Mandelbox Boxes - test Test animation rendered with Mandelbulber 2.05 (not released yet) Tested workflow: - recorded flight path in Flight Animation mode - exported flight animation into keyframe animation (1 keyframe per 50 frames) - added Fog based on distance effect - parameters for fog added to animation table - adjusted fog parameter of every key frame (tested modify keyframe) - added DOF focus distance parameter to animation table - adjusted DOF focus on every key frame - modified background color (tested if change is applied to all frames) - modified interpolation type from linear to Akima for fog and DOF parameters - modified camera rotation on first 3 key-frames - deleted first key frame Tested behavior: - used Akima interpolation for camera position when distance to fractal object decreases logarithmically - works much better than Catmull-Rom interpolation - tested very deep close up (distance between camera and fractal object on last frame was 3.5e-13) - on last frames camera movement is jerky - limited computation resolution Project website: https://github.com/buddhi1980/mandelbulber2 Parteon: https://www.patreon.com/krzysztofmarczak$

Krzysztof Marczak |

Different types of key frame interpolation in Mandelbulber program