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Author Topic: Anti-aliasing again  (Read 2288 times)
Description: Antialiasing in mandelbulber
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Ike1970
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« on: April 27, 2011, 01:47:32 PM »

Hello everybody,

I am trying to get better results for my images in mandelbulber.  In similar posts I have read this can be achieved in m3d but not in that way mandelbulber.  Buddhi stated in his reply to a post July 24th, 2010 (http://www.fractalforums.com/mandelbulber/mandelbulber-0-85/) that the best way would be to ". . .render image in doubled resolution and reduce resolution after rendering. . . ".   The way I understand this is that after saving the image I shold open it in a graphics application and reduce the resolution?   Reducing the resolution would mean reducing the ppi?
For example, image rendered at 2400x2400, importet to PS, there it sates under image size "75ppi" -- so I would reduce this value?
Does anyone have experience in this?

thanks,
Ike
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Fractal Ken
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« Reply #1 on: April 27, 2011, 05:08:29 PM »

Ike, I'm not familiar with Mandelbulber, but a standard antialiasing trick is (for example) to render an image at 2400x2400, and then scale it down to 1200x1200 in a graphics application. I've found this approach very effective.
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Buddhi
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« Reply #2 on: May 01, 2011, 06:20:40 PM »

Hello everybody,

I am trying to get better results for my images in mandelbulber.  In similar posts I have read this can be achieved in m3d but not in that way mandelbulber.  Buddhi stated in his reply to a post July 24th, 2010 (http://www.fractalforums.com/mandelbulber/mandelbulber-0-85/) that the best way would be to ". . .render image in doubled resolution and reduce resolution after rendering. . . ".   The way I understand this is that after saving the image I shold open it in a graphics application and reduce the resolution?   Reducing the resolution would mean reducing the ppi?
For example, image rendered at 2400x2400, importet to PS, there it sates under image size "75ppi" -- so I would reduce this value?
Does anyone have experience in this?


As said Fractal Ken I mean reducing resolution by downscaling of result images. This is the most effective way for anti-aliasing from quality point of view. Fist render image in high resolution, for example 2000x2000 and then downscale this image to 1000x1000 using some image manipulation program (e.g GIMP).
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