Apply texture on an 3D object

Hi,
I have a 3D scanner that outputs 3D model (STL file) as well as texture for that model (PNG file). I'm able to open the STL file in Labview (as mesh object), but I don't know how to plot texture on the mesh, because Apply Texture.vi doesn't work (at least not correctly). However, I'm able to apply the same texture on a simple sphere (see the attached example), therefore I don't understand why it's not working for my mesh.
Any help is greatly appreciated. Also the example is attached.
Attachments:
3DPicture.7z ‏3677 KB

Now, I think that you probably want to show your 'hand' on top of your points. Then, although STL doesn't have Texture information, once you read into LabVIEW, you can manipulate the mesh to generate the missing infomation.
The Texture is specified by two parameters S and V. They correspond to the Horizontal and Vertical coordinates (normalize between 0 and 1) of the picture that will be use inside the triangle. So, I noticed that you want to see your hand 'projected' to the points measured. Also, I noticed that the X, Y position is 'similar' to the location of your picture, so I just tried to map the X and Y points (ignoring Z) into the S and V parameters. I also noticed that your dimensions were way bigger than the picture, so I normalized the X,Y,Z coordinates. Then, by applying a those two transformations, I was able to get this:
Now, I also noticed a relationship between the size of the picture and points, so that is the reason I tried 'eye ball' it. Also, I have to flip the picture vertically to match the inicial points.
Notice also that your measurements have several points that are not in the hand, so probably you'd want ot clean those points and also remove points that are 'off' the hand (probably errors).
In short, the trick in using textures and meshes is to map the part of the picture you want to map into your object (in your case, the triangles). If you look into the shipping example: "C:\Program Files (x86)\National Instruments\LabVIEW 2013\examples\Graphics and Sound\3D Picture Control\Using Meshes.vi", you will see how meshes work with textures.
Would this work for you?
Barp - Control and Simulation Group - LabVIEW R&D - National Instruments
Attachments:
STL and JPEG examples with texture.vi ‏41 KB
hand 2.jpg ‏60 KB

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Geetings User239

Apply texture on an 3D object

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