Visual Intelligence Lab.

Ph.D. Candidate

Robot Intelligence Technology Lab.

M.S. Candidate

- Industrial applications: optimizing SMT fabrication process with deep learning models via Bayesian Optimization framework

- Visual learning: few-shot class incremental learning methods

Journal Publication

Taek-jin Song*, Jongoh Jeong* and Jong-Hwan Kim. End-to-end Real-time Obstacle Detection Network via Multi-Task Learning. (Accepted) [Project page]
T-ITS DOI PDF

Intelligent Systems Division

Undergraduate Research Assistant,
Cooper Union & National Institute of Standards and Technology (NIST)

- Developed a system to extracte digit texts using OCR and detect target motions using structural similarity metric from task-specific videos in order to analyze and compare the performance of exoskeletons and exosuits to that of bare body joints in Python (OpenCV) and MATLAB

- Project with Azure Kinect™: Development of a low-cost motion capture system, and synchronizing and controlling/tracking drones by human pose

Code Project Page

IEEE 802.11b Wireless Local Area Network Simulations

Wireless Communications

- PHY layer implementation of WLAN 802.11b Standards ("WiFi-1") in MATLAB

- WiFi 1 uses DSSS (Barker) and CCK modulation schemes at 4 different data rate transmissions

Report Code GitHub

Transmit and Receive Diversity Schemes Simulations

Wireless Communications

- Maximal-Ratio Receiver Combining (MRRC) and Alamouti Space-Time Block Coding implementation in MATLAB

- Evaluatoin of BER performances, investigation of pros/cons and applications in MIMO (GSM, CDMA, WiFi)

Report Code GitHub

Simple CDMA Decoder

Wireless Communications

- A CDMA message decoder for a string (ASCII) message

- Walsh code (Hadmard transform) for orthogonal channels, BPSK modulation for encoding and PN-sequence for scrambling

Report Code

Combating Class Imbalance in a Clinical Dataset

Bayesian Machine Learning

- Explored methods to combat class imbalance, a commonly encoutered problem in practical medical datasets

Report Code

ML Class Projects

- Conjugate Priors   Report

- Linear Regression   Report

- Generative Model, IRLS algorithm   Report

- Gaussian Process Regression   Report

- Expectation-Maximization   Report

- Markov chain Monte Carlo Sampling   Report

Checkers A.I. & Neural Network

Artificial Intelligence

- Implemented Checkers game with artificial intelligence using iterative deepening and alpha-beta search algorithm (minimax search with alpha-beta pruning) , along with a heuristic function (Project 1)

- Implemented a single hidden-layer neural network with backpropagation from scratch (Project 2)

Project 1 Project 2

Movie & Food Reservation System

Databases

- Developed a database system that allows users to reserve seats as well as food menu for a movie at a specific theater. This web application demonstrates database management system for a movie theater

Code

Homography Estimation

- Image stitching from two planarly translated images using RANSAC in geometric transformation estimation

Code

User Interactive Login Form

- Implemented a responsive login form with moving character gestures, using SVG drawing (Scalable Vector Graphics); character: 'Cony' from NAVER Lines, Corp.

Code

Structural Similarity Index on Pytorch

- Structural similarity index (SSIM) is an index developed to measure the degree of similarity between two images.

- Implemented SSIM on Pytorch based on paper ("Image quality assessment: From error visibility to structural similarity." Z. Wang, A. C. Bovik, H. R. Sheikh and E. P. Simoncelli. IEEE Transactions on Image Processing, vol. 13, no. 4, pp. 600-612, Apr. 2004. )

Code

Symmetric Social Network Service Platform, DISC

SW Engg and Large System Design

- Led a team of 4 in designing a web-oriented platform where users share songs to public and private feeds, and connect symmetrically through request/accept

- Coordinated front/backend integration and database management as scrum master

- Tech stack: MongoDB, ReactJS, Apollo Spotify, Nginx [site: http://disc.cool:8000]

Code

Interactive Graphical Visualizations

Computer Graphics

- Implemented an interactive Rubik's cube graphic where users can scramble, load, save the state, and view the sides at various angles. Focus: view transformations, textures

- Built an educational visual for environment mapping on a skybox with adjustable parameters of the object. Focus: Phong reflection and shading models, view/ light reflection, object rendering

Code

Visualization of Chaotic Duffing Oscillator

Physics Simulations

- Visualized and determined the parameters of 2D chaotic model of a nonlinear dynamical Dung system using 4th order Runge-Kutta numerical approx. with VPython

- Investigated Lyapunov Exponent, a metric used to quantify outbreak of chaotic behavior in dynamical systems

- Showcased at 2019 End-of-Year-Show at Cooper Union

Report Code

Communication Link Design and Stochastic Modeling

Communication Theory, Stochatic Processes

- Improved bit-error rate in symbol transmissions through noisy channel with inter-symbol interference using equalizers, maximum-likelihood sequence estimator. Improvement with error correction codes using block (linear, Hamming, Cyclic), bit-level (BCH), symbol-level (Reed-Solomon, Convolutional, Viterbi) codes.

Part I (Modulation) Part II (ECC)

- Implemented stochastic estimation with MMSE and ML Estimator, Detection theory using MAP and MPE, Pattern recognition with stochastic prediction

Code

2- & 8-bit Processor

Computer Architecture

Paper Processor (2-bit) / 8-bit

2-bit 8-bit

Tower of Hanoi

Computer Architecture

Implementation of 3-ring, 3-disk Tower of Hanoi in Assembly Language

Code

Flappy Bird

Digital Logic Design

Details

Microcontroller Club

Secretary, Website Management

(Website not available on school server anymore)

Cooper FSAE Motorsports

Carbon Fiber Bodywork Team

Bodywork (2014-2015) - Carbon Fiber Reinforced Polymer Layup Process on sidepods and nosecone

Photo1

Fueling Team, Vice Lead

Fueling (2015 - 2016) - Fuel tank design

Photo2 Design

Cooper Pioneer Newspaper

Staff Writer

Actively reflected upon campus-wide talks with interests of community members

Introduced the idea of columns for 1-to-1 student and professor interviews for closer social familiarity

Article1 Article2 Article3 Article4 Article5 Article6

Office of Student Affairs

Student Assistant

Assisted the Director of Student Affairs with hosting various in-school and external events, such as reaching out to organizers, scheduling and advertising to target students

Helped preparation for graduation ceremony from planning to ushering stages

Teaching Assistant

EE305: Introduction to Electronics Design Lab. EE202: Signals and Systems

- Oversaw and managed the class load (130 students for EE302 and 62 students for EE202)

- Administered assignments and managed office hours (3 hrs/wk)

Republic of Korea Army

OPS & INTEL Staff, Interpreter, Squad Leader

- Responsible for preparation of classified operations drills and occassional interpretation duty in meetings with US Port Battalion

- Managed 8-pax squad for 13 months (exceptional case)

'17 UFG Exercise

Edonation Project (NGO)

Project Director, Instructor

- Organized Programs: SAT II Subject & AP Courses (9 total classes) held at Columbia U. and Cooper Union

- Instructed Subjects: AP Chemistry (9 students), Math IIC (11 students)

SATII,AP Poster Info Session