Using the Website

Project Page

The Project Pages were created in an effort to help promote student projects. The Project Pages provide a showcase where employers, other students, and friends can see what UIUC students are capable of. Many employers, in particular, consider a good Senior Design Project to be just as valuable as internship experience. The Project Pages will develop over time into a valuable library of practical engineering knowledge. Some of the best projects will be identified each semester and placed in the Senior Design "Hall of Fame," while the rest will be accessible by semester and search engine.

Updating Project Information

Once your project has been approved on the discussion board by the Instructor, you should promptly update your project information. In order to do so, find your project on the Project page, and click its title. When a frame expands, click on "Edit." Next, enter your UIUC netid and password. The system will lookup your project and prompt you for information such as your project's title. Please fill in the information that you wish to have appear for your project, and then click on the submit button. The required fields are marked so. You can update this information at any time. We strongly urge you to keep a backup of all of the information, and we would like to caution you of one scenario in particular. If multiple people attempt to edit this information at the same time, the second person to submit the changes will overwrite the first person's changes. Also, be sure to logout when you are done by closing the web browser. It is important that you provide a project desciption. It should be a brief overview of your project and explanation of why it is worth doing. Please provide this information as soon as possible and try to limit the length to about 250 words.

Submit Schedule

After updating your project information, you should proceed to the Submit Schedule page. Here each student should submit his/her schedule so that your TA can schedule a weekly meeting time. We know that there are a lot of boxes to check, but we need this detailed information because of how difficult it is to match schedules. The information is displayed in a convenient way for TAs when it is time for them to schedule meeting times. The system is very intuitive so instructions are not needed. NOTE: Please be sure that the schedule you submit is as accurate as possible, since you won't be able to edit it later!

After submitting your schedule, you should familiarize yourself with the "Upload Files" page.

Uploading Files

This area is used to upload files such as the Proposal, the Final Paper, Images, and additional files. When a file is uploaded, it is renamed and limited to a specified size. Special documents such as Proposals and Final Papers should be uploaded into the appropriate slot and will automatically be added to your Project Page. Images and other files can be uploaded into any other slot such as "file1." To upload a file, simply select which slot to place it in, and then select the file from your computer using the "Browse" button.

3D Scanner

Peiyuan Liu, Jiayi Luo, Yifei Song, Chenchen Yu

Featured Project

# Team Members

Yifei Song (yifeis7)

Peiyuan Liu (peiyuan6)

Jiayi Luo (jiayi13)

Chenchen Yu (cy32)

# 3D Scanner

# Problem

Our problem is how to design an algorithm that uses a mobile phone to take multiple angle photos and generate 3D models from multiple 2D images taken at various positions. At the same time, we will design a mechanical rotating device that allows the mobile phone to rotate 360 degrees and move up and down on the bracket.

# Solution Overview

Our solution for reconstructing a 3D topology of an object is to build a mechanical rotating device and develop an image processing algorithm. The mechanical rotating device contains a reliable holder that can steadily hold a phone of a regular size, and an electrical motor, which is fixed in the center of the whole system and can rotate the holder 360 degrees at a constant angular velocity.

# Solution Components

## Image processing algorithms

- This algorithm should be capable of performing feature detection which is essential for image processing. It should be able to accurately identify and extract relevant features of an object from multiple 2D images, including edges, corners, and key points.

- This algorithm should be designed to minimize the memory requirement and energy consumption, because mobile phones have limited memory and battery.

## Mechanical rotating system

Phone holder that can adjust its size and orientation to hold a phone steadily

Base of the holder with wheels that allows the holder to move smoothly on a surface

Electrical motor for rotating the holder at a constant angular velocity

Central platform to place the object

The remote-control device can be used to control the position of the central platform. Different types of motors and mechanisms can be used for up and down, such as the stepper motors, servo motors, DC motors, and AC motors.

# Criterion for Success

- Accuracy: The app should be able to produce a 3D model that is as accurate as possible to the real object, with minimal distortion, errors or noise.

- Speed: The app should be able to capture and process the 3D data quickly, without requiring too much time or processing power from the user's device.

- Output quality: The app should be able to produce high-quality 3D models that can be easily exported and used in other software applications or workflows.

- Compatibility: Any regular phone can be placed and fixed on the phone holder with a certain angle and does not come loose

- Flexibility: The holder with a phone must be able to rotate 360 degrees smoothly without violent tremble at a constant angular velocity

# Distribution of Work

Yifei Song

Design a mobile app and deploy a modeling algorithm to it that enables image acquisition and 3D modeling output on mobile devices.

Peiyuan Liu:

Design an algorithm for modeling 3D models from multiple view 2D images.

Jiayi Luo:

Design the remote-control device. Using the electrical motors to control the central platform of the mechanical rotating system.

Chenchen Yu:

Design the mechanical part. Build, test and improve the mechanical rotating system to make sure the whole device works together.