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SwissVAMyKnife.jl

codecov Documentation for stable version Documentation for development version

Tomographic Volumetric Additive Manufacturing is a novel 3D printing technique which is based on a tomographic principle. Light is illuminated from different angles onto a glass vial which contains a photosensitive resin. Once a voxel in the resin receives enough light, polymeristartss.

This toolbox is developed to solve the optimization challenge around VAM. What are the required patterns on the projector such object voxels polymerize and not-object voxels stay unpolymerized.

This package is developed in Julia Lang and features CUDA and CPU support. CUDA can accelerate reconstruction typically 10-20x times.

It runs on Windows, Linux and macOS!

The general principle behind TVAM. a) a set of 2D projection patterns is propagated into space. b) shows how a slice of the pattern propagates through the volume and c) how the incoherent sum results in a total energy dose. d) the object polymerizes if it reaches an energy threshold. e) polymerization threshold results in a printed slice. f) is the intensity histogram of b). g) is the 3D view of the Benchy boat. h) is the general setup.

Features

  • 3D parallel Radon transform for ray optical simulation
  • rigorous simulation of absorption and vial refraction
  • CUDA acceleration hence high performance
  • 3D coherent wave optical optimization (see this paper for details and limitations). Note this has been only theoretical demonstrated and experimentally not validated.

Installation

Install the most recent Julia version. Then open the REPL and run:

julia> using Pkg

julia> Pkg.add("SwissVAMyKnife")

Examples

You can also run the examples locally. Download this repository and then do the following in your REPL:

julia> cd("examples/")

julia> using Pkg; Pkg.activate("."); Pkg.instantiate()
  Activating project at `~/.julia/dev/RadonKA.jl/examples`

julia> using Pluto; Pluto.run()

Other packages

There is the Python based VAM Toolbox and LDCD-VAM. In terms of functionality, they also offer a ray based methods including absorption. Wave optical methods are not offered.

Development

File an issue on GitHub if you encounter any problems.

Citation

If you use this software in academic work, please consider citing:

@misc{wechsler2024wave,
      title={Wave optical model for tomographic volumetric additive manufacturing},
      author={Felix Wechsler and Carlo Gigli and Jorge Madrid-Wolff and Christophe Moser},
      year={2024},
      eprint={2402.06283},
      archivePrefix={arXiv},
      primaryClass={physics.optics}
}