Little Grampy One-Note [Sculpting with GIMP]

gramp · **Posted:** Tue Dec 15, 2015 9:29 pm **(#1)**

Reporting some success at creating a heightmap/depthmap with GIMP, using the Very Fine "bleed-into-transparent" script by RobA:
viewtopic.php?f=9&t=3153&start=40#p41455

In this case I tried a bas-relief of a flour.

Starting with a 2D line drawing, I created 3 different bw levels of contours in different levels containing transparent areas representing individual features surrounded by black as "hints" for the script (100%, 70, and 30), and the used the script to "loft" the region by smoothing/smearing the levels.

Original:

Attachment:

BasRelief-Lily_2Dlineart.png [ 47.71 KiB | Viewed 1877 times ]

Scripted/Bled-into-Transparent:

Attachment:

BasRelief-Lily.png [ 36.12 KiB | Viewed 1877 times ]

Solid-model result:

Attachment:

MC5scrnsht_BasRelief-Lily_5x5x0d375.png [ 92.51 KiB | Viewed 1877 times ]

It is crude, but it was proof-of-principle, and I think the roughness can be fixed by smudge-tooling.

The "art" is in imagining where the contours ought to be, but it's apparently pretty forgiving because even I got a recognizable result.
:^)
--
gramp

Wallace · **Posted:** Tue Dec 15, 2015 10:35 pm **(#2)**

This may be usable when creating a depth-map of a 2d image then converting the image into a red cyan 3d anaglyph.

gramp · **Posted:** Wed Dec 16, 2015 7:48 am **(#3)**

@Wallace

Mayhap could be. RobA's script makes the technique do-able, just. But, oh my, the tweaking. It takes practice to "see" (guess) where the contour "helpers" should be placed.
--
gramp