3dmaya3dsmaxcinema-4d

Create mesh (Geometry) from texture (black and white)

It is here way to make 3D mesh (geometry) from black/white texture?

Source texture is black and white map. Background is black and there is white arrow inside of texture. Now I need create 3d mesh from white color. Any kind of 3D program, 3Ds max, ...

enter image description here

Solution

  • Well it really depends on what you need the mesh to do. (a jpeg is not a good source for this data) What i would do is use the original vector image but you can vectorize it later in for example illustrator or Photoshop:

    in photoshop:

    1. make color a selection by copying it to a extra channel
    2. and convert to work path
    3. export as illustrator

    In your 3d app:

    1. read the vector image in and extrude
    2. (optional) triangulate

    mesh and triangulated mesh

    img 1: raw n-gnon mesh and its triangulated counterpart. Done with maya and photoshop (using python)

    a more elborate sample

    img 2: Same technique different picture just to show that the technique does scale

    If you don't want to use a 3d app then use a vector tracing code to make a vector trace extruding that is pretty easy just duplicate the vector at a different elevation then connect vertices and fill the holes.

    Code for tracing can be found at for example http://autotrace.sourceforge.net/index.html