Rendering Large Images

From Ultrafractal Wiki

"Zach Beale wrote:" "I'm not sure how to go about dividing up a fractal with twenty something layers. And UF only renders to about 330 inches x 33 inches. I need 480 x 48."

Hi Zach,

Here's one approach (not necessarily a good one, but functional). See the parameter set below. The top layer is a mask and the bottom layer represents the original image. You would just copy the top layer of this image to the very top of the stack of layers of your image, with the multiply merge mode at 100% opacity. Then, increment the horizontal component of the center on the Rectangle Clip transform by 1.5 (-13.5, -12, -10.5, -9, etc.) for each tile. You could then change the aspect ratio to 1:1 and crop the image down to a square for that tile. Then, render each square and reattach with Photoshop or equivalent.

Kerry

oct31-d {
fractal:
  title="oct31-d" width=1000 height=100 layers=2
  credits="Kerry Mitchell;11/1/2008"
layer:
  caption="ten tile mask" opacity=100 mergemode=multiply
  method=multipass
mapping:
  center=0/0 magn=1 transforms=1
transform:
  solid=4294967295 filename="lkm.uxf" entry="rectangle-clip"
  p_center=-13.5/0 p_width=1.5 p_height=1.5 p_inout=inside
formula:
  maxiter=1 percheck=off filename="lkm.ufm" entry="pixel"
inside:
  transfer=none
outside:
  transfer=none
gradient:
  smooth=yes index=0 color=0 index=300 color=4234942 index=399
  color=16777215
opacity:
  smooth=no index=0 opacity=255
layer:
  caption="original image" opacity=100 method=multipass
mapping:
  center=0.08517333120576/-0.005017365853884 magn=19218.183
  angle=20.5223
formula:
  maxiter=100000 percheck=off filename="Standard.ufm" entry="Julia"
  p_seed=-1.113662388957868302688885/0.2519842637524854636299715
  p_power=2/0 p_bailout=1e6
inside:
  transfer=none
outside:
  transfer=linear repeat=no filename="lkm3.ucl" entry="smooth-tanh"
  p_power=2/0 p_bailout=1000 p_density=0.003 p_minskip=0
gradient:
  smooth=yes index=0 color=0 index=300 color=4234942 index=399
  color=16777215
opacity:
  smooth=no index=0 opacity=255
}

---

"hi all, I have to render my works for large printing like for example a2

A2: 420x594mm(@ 300dpi= 4963px x 7017px)

so in which resolution and how big do i have to render it in Ultra Fractal. Any comments are very appreciated

Joe"

Hi Joe,

Typically you would render the image at twice the final size needed and then take it into a graphics program like Photoshop and reduce it by half. This helps to produce a crisper image, reducing the "jaggies". So per your example you would render the image at 9926 x 14034 pixels @ 300dpi.

Hope that was what you were looking for.

Kim

***

Just caught this now.... Has anyone ever considered perhaps rendering to A3 and using a plugin such as ALien Skin's Blow Up or OnOne GenuineFractals PrintPro to enlarge the image???? You will lose nothing in quality and save yourself a whole bunch if time,

Generally speaking you can use either plugin to enlarge an image to 400% of it's original size pixel for pixel.. and even includes a pixel sharpening algorithm. You can then take the resultant image and use a bit of Math to enlarge this up to another 400% in Photoshop using bicubic resampling....

I have a couple of pretty large image files knocking about in excess of A0 - my problem is trying to find a decent printshop that has decent canvas paper and in Peru I get the feeling I am really going to need to look..

The images by the way look fab but they are monsters on my CPU! - still better than waiting for weeks to do the same thing natively with UF though!

I use virtually no plugins in Photoshop - on rare occasions perhaps flood but never for water.... ;) that I prefer to create myself. I do however use hand automation plugins and have Blow Up installed on Windows and PrintPro on Mac..... two of the most invaluable plugins around imho (particularly for mathaphobics like me...)

- Zoo