Projects Proposed Projects

Description: Develop a “ChatGPT for 3D modeling”, a large language model (LLM) capable of understanding natural-language instructions and translating them into IRIT scripting code for geometric modeling. Users will be able to describe shapes and structures (e.g., “Create a spiral tower 20 cm high”), receive the corresponding script, and even get explanations of how the generated code works.
Example Queries :
Naïve:
1. Create a structure composed of three connected spheres, each touching the other two, with a thin cylindrical rod connecting them through their centers.
2. Build a Gothic arch 30 cm high based on two semicircles, then perforate it with a flower-shaped window with five petals.
3. Create a cup with 3 mm wall thickness, where the inner diameter gradually changes from 5 cm at the base to 7 cm at the rim.
Advanced:
1. Generate a surface of revolution around the Z-axis, where the radius is defined as a function r(y).
2. Sweep along a curve: a tube following a trefoil knot with variable radius.
3. A perforated Möbius strip, where the density of holes varies according to curvature (with given parameters).

Gershon Elber, Boaz Sternfeld

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).
Start exploring

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.

There are many models out there on the web. One can envision the organization of random models in 3D so they can cast a shadow of a desired shape as can be seen on the right. However, can you organize a set of models so they will cast different desired shadows from 2 different directions? 3-directions? N-directions?

M. C. Escher requires no introduction. His so-called impossible drawings are highly intriguing. Interesting, many of his drawings can be realized as tangible objects, and mimic the impossible drawing from one specific view, as can be seen by the Necker cube, also in Escher’s Belvedere drawing, and also hanging above the entry hall of the CS department. This project will build a simple modeling environment for high school kids, so they can design regular simple 3D geometry, modify it into a so-called impossible model, and hopefully send the resulting model as an STL file to a 3D printer (that their school has).

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 files 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.