GIMP Chat
http://gimpchat.com/

Bitmap mesh.
http://gimpchat.com/viewtopic.php?f=23&t=13569
Page 1 of 2

Author:  lylejk [ Thu Jan 21, 2016 2:56 am ]
Post subject:  Bitmap mesh.

Been toying with converting bitmaps to topological wireframes of late. Below's the steps I used for the Crinkle only result.

ref: http://www.fontplay.com/freephotos/sixt ... 06-042.jpg

First I start with creating the convolution layer (don't have too, but for crinkle only result, it will yield a better result).

I first dup then run G'MIC's bilateral filter on top layer (created a custom preset, but bilateral filter is located under Repair):

Attachment:
Bilat.png
Bilat.png [ 209.73 KiB | Viewed 2770 times ]


I then set the result to Grain Extract; this is your convolution layer:

Attachments:
convolution.png
convolution.png [ 636.17 KiB | Viewed 2770 times ]

Author:  lylejk [ Thu Jan 21, 2016 2:58 am ]
Post subject:  Re: Bitmap mesh.

I then downsize:

Attachment:
downsize.png
downsize.png [ 28.83 KiB | Viewed 2769 times ]


Followed by a solid white layer set to 50% opacity (80% opacity if you use straight target image):

Attachments:
white_50.png
white_50.png [ 259.41 KiB | Viewed 2769 times ]

Author:  lylejk [ Thu Jan 21, 2016 3:01 am ]
Post subject:  Re: Bitmap mesh.

Now run the 3D Elevation preset (again used a custom preset but 3D Elevation is located under Rendering)

Create a solid white layer and set to Screen and merge down. Then create a solid black layer (as base layer) and merge down. Adjust contrast and levels until happy. I ran Freaky details as well for my final result.

Attachments:
result.jpg
result.jpg [ 2.26 MiB | Viewed 2767 times ]
3d_elevation.png
3d_elevation.png [ 349.92 KiB | Viewed 2767 times ]

Author:  Rod [ Thu Jan 21, 2016 8:10 am ]
Post subject:  Re: Bitmap mesh.

Lyle you should consider writing this as a new filter in G'MIC (Artistic>Wireframe) :)

Author:  lylejk [ Thu Jan 21, 2016 8:18 am ]
Post subject:  Re: Bitmap mesh.

Hoping Diego can. :)

Author:  dinasset [ Thu Jan 21, 2016 8:18 am ]
Post subject:  Re: Bitmap mesh.

Rod, I've already written (with Lyle invitation) the filter, I posted the first result under the topic "Just the clinkers".
I'm waiting upon Lyle to be ready to test it.

Author:  dinasset [ Thu Jan 21, 2016 8:19 am ]
Post subject:  Re: Bitmap mesh.

Lyle, do you want me to post here the filter I wrote under your tut, in order for you to test it?

Author:  lylejk [ Thu Jan 21, 2016 8:21 am ]
Post subject:  Re: Bitmap mesh.

Whereever you want to post it Diego. About to have to leave though and won't be back for a little while. Others can beta test too; maybe they will like it as well. My bet is it can all be done withing G'MIC, but, however you decide to do the automation, it will be appreciated. :)

Author:  dinasset [ Thu Jan 21, 2016 8:26 am ]
Post subject:  Re: Bitmap mesh.

OK, here is the filter in its current status
The output keeps all the layer step by step (unless the user asks to flatten)
Attachment:
DIEGO_Wireframe_Map_Lyle.7z [2.04 KiB]
Downloaded 77 times

Author:  Rod [ Thu Jan 21, 2016 8:42 am ]
Post subject:  Re: Bitmap mesh.

Here are my results with this image -
Image

Good stuff! :bigthup

Image

I kept everything default.

Page 1 of 2 All times are UTC - 5 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/