Create a Mesh Region from Image Data 

Using an image as input, create a mosaic or "stained glass" representation by repeated use of VoronoiMesh.

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Find the edges of the image.

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Create a Voronoi mesh from the edge positions.

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Recursively apply VoronoiMesh to the mean vertex positions of the precursive Voronoi cells to create a more uniform mesh.

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Color each polygon with the image color coinciding with its mean vertex positions.

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