Week 3

Exploring the Facility

This week, I discovered a completely different room at CTU. First, I walked through some impressive corridors with stunning architecture and design:

I admired decorative doors, observed a famous pendulum from a new perspective, and traversed a network of stairs leading to a modern work area:

Photogrammetry

In that new room, I had the opportunity to experiment with a dedicated photogrammetry setup. For this experiment, I used EXScan software, a full 3D scanning solution. Initially, I followed the instructions without much thought, and the result was so poor that the scanned object was barely visible.

Then I performed a proper calibration, which led to a much better result (though a few artifacts remained in areas the scanner could not capture):

During scanning, the device projected interesting light patterns. I am unsure how much they contributed to the scan itself, but they certainly made the process look more elaborate:

I opted for scanning with color textures, resulting in a colorful surface:

The 3D model itself had far more detail than I expected:

I was quite impressed with the final quality. If I wanted even more detail, I could experiment with additional passes or different image processing before scanning.

3D Printing a Phone Holder

For the second part of the lesson, I prepared a model of a phone holder prototype with three fixed angles for viewing. Each angle corresponds to a different position of the phone:

I became familiar with the Original Prusa i3 MK3 3D printer, which was equipped with a 0.4 mm nozzle and used PETG filament. After getting used to the machine, I began the printing process:

Due to scaling the project down for time and filament savings, certain details like the angle numbers on the model became illegible:

The model also required supports, which had to be removed afterwards:

Luckily, removing these supports was easier than it looked, thanks to their minimal structure:

Here is one of the chosen angles (out of 50°, 65°, and 80°) holding a small ruler as a placeholder: