Projects Proposed Projects

Background:
Knitting structures are matrices of knit stitches that together affect the performance and appearance of knitted textiles. Computational design tools allow the automatic generation of knit structures and population them across the knitted textile. However, simulating the result using current tools is often challenging and inaccurate.
Project goal:
The goal of this project is to develop a computational simulation tool within the Blender environment. The tool input will be the knit structure configuration and yarn color arrangement, and the output will be a rendered visual simulation of the knitted textile.

Yoav Sterman, Boaz Sternfeld

Background:
3D printing usually works by slicing an object into layers of constant thickness and printing them consecutively until the object is built. For large inclination angles, support structures are needed, mainly because the horizontal distance between layers gets larger as the angle increases. Slicing the model into thin layers improves the quality of printing. However, it lengthens the printing process.
Project goal:
Develop a slicing algorithm based on iso-curves of the printed mesh model to allow variation in the layer height. The layer height will be thick for a small inclination angle, and for a large angle, the layer angle will be thin. This results in a non-planar toolpath, which is possible due to an extended nozzle that replaces the standard one.

Yoav Sterman, Boaz Sternfeld

Given a location in space, send rays in 360 degrees (from the center of a sphere in all directions) and check which rays hit models in the scene and at what distance.
Then, repeat the process as the point moves along a track.
With Prof. Dafi Fisher-Gewirtzman and Dr. Guy Austern, Faculty of Architecture.

One of the more acceptable file formats for geometric CAD nowadays is the STEP file format. This project will aim to implement (a portion) of this file format as a filter to our own CAD system (Irit – See).
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Software support for (5-axis) hot wire Styrofoam cutting. A cutting machine to cut Styrofoam using hot wires is built these days using ME students. We like to build an interface between CAD software and the drivers of the build machine.
For example for such a machine, See

PowerPoint is a great tool, that is with us for many years, almost unaltered. Specifically, we still cannot display 3D geometry inside PowerPoint. This project will implement a plugin to PowerPoint that will allow the display and interaction with IRIT/OBJ/STL geometry. It can be based on an obsolete plugin we have of similar functionality.

In recent year, methods were developed to construct porous/lattice geometries. One fundamental question here is how to create tiles for such lattices. In [1], such a general space feeling approach has been developed that is based on 3D Voronoi diagrams. This project will implement this idea (possibly using an existing, public domain, Voronoi diagram package) and explore the potential of this methods in creating porous geometries. [1] Sai Ganesh Subramanian, Mathew Eng, Vinayak R. Krishnamurthy, Ergun Akleman. Delaunay Lofts: A biologically inspired approach for modeling space filling modular structures. Comput. Graph. 82: 73-83 (2019).

Recently we devised algorithms to build 2D Hoberman-like structures (see, for example, https://en.wikipedia.org/wiki/Hoberman_sphere), but for general curved shapes (see, for example, https://youtu.be/J7ASBZ9yWLo and https://youtu.be/OpkrbZXI5GM). This project will extend this result to pairs-of-scissors that are of different sizes orthogonal to the curve, and different lengths along the curve. This work is more mathematical and will require the use of splines tools.

We have an ability to create complex porous/lattice geometries via volumetric function composition. By carefully designing 3D interlocked pieces, they can be composed through an interesting volumetric shape, like in a torus, a vase (on the right), or even a car. This project will also require some geometric modeling and design skills (building 3D geometry).

In the infra-red (IR) spectrum objects emits light. We use ray-tracing shaders to simulate this process, however, this kind of rendering is expensive and time-consuming. Here we wish to examine the parameters of the process for having shorter rendering times while keeping the quality of the output image as much as possible.

Yair Vardi, Boaz Sternfeld

An augmented reality visual piano learning tool that uses HoloLens/Tablet

Generate a texture from an image, for example, an image contains veins & capillary

Articles: Non-Stationary Texture Synthesis by Adversarial Expansion (SIGGRAPH 2018)

Using a texture as a reference for an area selection in order to exact cut/split the mesh, cutting the mesh along the given silhouette
GUIDE: A robust algorithm at the expense of efficiency
Input:
1. CSV file of triples = close silhouette selection
2. Mesh + texture
Output: Mesh + texture

Miri Ben-Chen, Boaz

Turn any 360 image to a VR experience. Given a 360 panoramic and a mesh, project the 360 photo on the geometry For more details feel free to call me Boaz 052-8113321

Use an haptic gloves to extended the physical modeling of contact surfaces, object hardness, surface deformation, 3D modeling etc.

Miri Ben-Chen, Boaz Sternfeld

Adobe has support for 3D in PDF file using the PRC (Product Representation Compact) file format. Will develop a filter from IRT file format to PRC (vice versa). Enable embedding our 3D content in PDF, at will. Google “Adobe PRC 3D”