Algorithm Engineer with 9+ years in analysis, design, development and implementation of medical and healthcare algorithms.
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Research Areas

Machine Learning and Deep Learning

  • Computer Vision - Image Synthesis
  • Arts - Style Transfer
  • Medical - Cancer Diagnosis, Dementia
  • Wearable Healthcare - Body Composition, Sleep Stage, Stress, Emotion

Bio Signal Processing

  • Heart Rate and Heart Rate Variability
  • Motion Artifact Removal
  • Respiratory Rate
  • Noise Removal

Medical Imaging

  • Ultrasound Elastography
  • Optical Coherence Tomography

Skills

Software

  • Python
  • MATLAB
  • R
  • C/C++
  • LabVIEW

Machine Learning Tools

  • Tensorflow
  • Pytorch
  • Keras
  • Scikit-Learn

Database / Web / App

  • SQL
  • Amazon Web Service

Experience

Artificial Intelligence Research Institute / Research Engineer

JANUARY 2018 - CURRENT, GYEONGGI

Atelier

  • Conducting research on developing artificial intelligence and computer vision algorithms in the domain of art

Samsung Electronics / Senior Algorithm Engineer

NOVEMBER 2014 - DECEMBER 2017, GYEONGGI

S-Patch (KFDA)

  • Developed heart rate estimation, heart rate variability estimation algorithms
  • Developed respiratory rate estimation algorithm
  • Developed stress estimation algorithm for elite athletes
  • Developed sleep stage classification algorithm
  • Developed cloud service system using AWS

Body Composition Analysis

  • Developed body fat, skeletal muscle mass, and body water estimation algorithm using bioelectrical impedance

Photoplethysmography (PPG)

  • Developed motion artifact removal algorithm using photoplethysmography and acceleration data for wrist-type wearable band

LG Electronics / Research Engineer

JULY 2012 - JULY 2014, SEOUL

Ultrasound

  • Developed software-based beamforming algorithm for ultrasound system
  • Developed image processing algorithm for noise removal

Optical Coherence Tomography (OCT)

  • Invented collagen estimation algorithm using polarization sensitive OCT
  • Invented skin thickness measurement, wrinkle estimation, dermal density estimation algorithms for dermatology application
  • Invented speckle noise reduction algorithm

Samsung Medison / Associate Research Engineer

JUNE 2007 - DECEMBER 2010, SEOUL

ElastoScanTM (FDA)

  • Invented displacement and strain estimation algorithm for freehand elastography
  • Invented adaptive persistence, dropout correction, and window correlation algorithms for noise removal
  • Succeeded in commercialization under the name ElastoScanTM
  • Application: Breast / Prostate / Gynecology

Education

Seoul National University / M.S.

2005 - 2007, SOUTH KOREA

  • Area: Low-power VLSI Signal Processing
  • Advisor: Prof. Wonyong Sung
  • Thesis: VLSI Design of Low Power FIR Filter Bank for Digital Hearing Aids

Kyunghee University / B.S.

2001 - 2005, SOUTH KOREA

Honors and Awards

  • 2002 Korea Research Foundation Scholarship - Full Scholarship
  • 2003 Korea Research Foundation Scholarship - Full Scholarship
  • 2004 Korea Research Foundation Scholarship - Full Scholarship
  • 2005 Award for Excellent Records (GPA: 4.02/4.3)
  • 2005 Seoul National University Scholarship
  • 2006 Samsung Medison Scholarship

Patents

  • Adaptive Persistence Processing of Elastic Images, US 8337406 B2 / EP 2189116 B1
  • Dropout Correction in Ultrasound Strain Imaging, US 8503714 B2
  • Providing an Elastic Image in an Ultrasound System, US 9125618 B2
  • Setting an Optimal Image Parameter in an Ultrasound System, US 8834374 B2 / EP 2289420 B1
  • Ultrasound Strain Imaging via Pixel Frame and Window Correlation, US 9289190 B2

Publications

  • Speckle Reduction in Optical Coherence Tomography Images via Dynamic Infinite-Impulse-Response Filtering, J Lee, SS Park, JH Chung, SPIE, 2014
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