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DAVID-Laserscanner Forum • View topic - need OBJ to PNG converter
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need OBJ to PNG converter

need OBJ to PNG converter

Postby wynpotter » Mon Mar 03, 2008 4:01 pm

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hi. and welcome

Postby hal » Mon Mar 03, 2008 10:16 pm

Welcome Wynpotter,
I know only two program (but not free) to convert a 3D file into a bitmap file like .png.
One is Adobe Photoshop CS3 Extended: in "open" menu you can chose a .obj file and manage it into photoshop (change view, zoom, pan, rotate, rendering styles, ...).
Second is 3D Studio Max (but I think that any athers 3d software with a rendering engine). you can import your obj file and render it as .png.
Sorry if I do a mistake, but I don't undertand your exactly problem.

If you want trasform a 3d file into a 2d file, you need a 3D tools. Blender can't export in .png? strange, I think that, if you render your object, .png can be found in bitmap output format.

bye, Mattia
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Postby wynpotter » Mon Mar 03, 2008 11:00 pm

There's a machine called Carve Wright that will cut shallow relief into a wooden board or hard plastic. If a 3d shape is transformed into a 2d grayscale png file the CW will cut out the relief of this image. http://www.carvewright.com/forum/index.php
I am looking at the better way to get the image into the png format. I have found several file converters but some have noise or artifacts that keep the png from being useful.
I have used the angel.obj file to test several programs and am still looking for a useable one.
If you have seen this feature in blender, please let me know where it is. I could overlook this feature from my lack of understanding of the program.
Thanks Wyndham
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Postby leo » Mon Mar 03, 2008 11:09 pm

You can open the opject file in Rhino (www.rhino3d.com) . Then you choose rendered mode in the viewport. Use the ShowZBuffer command and you get a picture suited for bitmap heigfield. The command _ViewCaptureToFile saves the picture to file for later use. There is a demo version of rhino and you can test with it.

Leo
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DAVID-Angel.png
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Postby Bongobat » Mon Mar 03, 2008 11:30 pm

Im not sure if it is capable of making a height map but blender can render a png. Go into blender and either click F10 or RENDER - RENDER SETTINGS. There is a tab now called FORMAT on the bottom right side. You can change the render format there. See attatched image.

EDIT: I think you can do it in blender but it looks like a bit of work:
http://wiki.blender.org/index.php/Tutor ... om_a_Plane
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blender.jpg
DealExtreme red line laser, Microsoft Lifecam HD-5000
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Postby wynpotter » Tue Mar 04, 2008 2:38 pm

Thanks I'll look into it, Wyndham
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