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Welcome to my blog. I'm Philip

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InfoNeRF: Ray Entropy Minimization for Few-Shot Neural Volume Rendering

이 논문은 적은 μ–‘μ˜ μž…λ ₯μœΌλ‘œλ„ NeRFλ₯Ό μˆ˜ν–‰ν•  수 μžˆλŠ” 방법을 μ œμ•ˆν•˜κ³  μžˆλ‹€. μœ„ λ™μ˜μƒμ€ 4μž₯의 μž…λ ₯만으둜 NeRFλ₯Ό 돌린 결과인데, 4μž₯의 μ΄λ―Έμ§€μ—μ„œ μ €λŸ° μΌλ°˜ν™”λœ λ‰΄λŸ΄ λ Œλ”λ§ κ²°κ³Όκ°€ λ‚˜μ™”λ‹€λŠ” 사싀이 ꡉμž₯히 놀라웠닀. Motivation 이 λ…Όλ¬Έμ˜ λͺ©μ μ€ Entropy κ°œλ…μ„ μ΄μš©ν•˜μ—¬ regularization을 μ‹œλ„ν•˜λŠ” 것이닀. λ‹€λ₯Έ λ³„λ„μ˜ λͺ¨λ“ˆμ„ μΆ”κ°€ν•˜κ±°λ‚˜, ν•™μŠ΅μ„ μΆ”κ°€ν•˜λŠ” λ“±μ˜ λ³΅μž‘ν•œ 기법을 μΆ”κ°€ν•œ 것이 μ•„λ‹Œ 정보 이둠 κ°œλ…μ„ ν™œμš©ν•œ loss term μΆ”κ°€λ§ŒμœΌλ‘œ 이λ₯Ό κ°€λŠ₯ν•˜κ²Œ ν–ˆλ‹€λŠ” 점이 핡심이며, 이 덕뢄에 λ‹€λ₯Έ λ§Žμ€ NeRF λͺ¨λ“ˆμ— ν•΄λ‹Ή 방법을 뢙이기 μ‰½κ²Œ μ μš©ν•  수 μžˆλ‹€κ³  ν•œλ‹€.

February 24, 2023 Read
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BARF : Bundle-Adjusting Neural Radiance Fields

ν•΄λ‹Ή 논문에 λŒ€ν•œ 리뷰 μ˜μƒμ€ μ•„λž˜ λ™μ˜μƒμ„ ν†΅ν•΄μ„œλ„ ν™•μΈν•˜μ‹€ 수 μžˆμŠ΅λ‹ˆλ‹€. Intro Original NeRF 논문은 처음 ECCV 2020μ—μ„œ λ°œν‘œλ˜μ—ˆμ„ λ•Œ, λ‰΄λŸ΄ λ Œλ”λ§ 뢀뢄에 μžˆμ–΄ ꡉμž₯히 큰 화두가 λ˜μ—ˆλ‹€. 그와 λ™μ‹œμ— λ§Žμ€ ν•œκ³„μ λ“€μ„ 가지고 μžˆμ–΄μ„œ λ§Žμ€ μ—°κ΅¬μžλ“€λ‘œλΆ€ν„° κ·Έ λ¬Έμ œμ λ“€μ΄ μ§€μ†μ μœΌλ‘œ μ§€μ λ˜μ–΄ μ™”λ‹€. μ΄λ²ˆμ— 리뷰할 BARF λ…Όλ¬Έμ—μ„œλŠ” κ·Έ μ€‘μ—μ„œ Original NeRFκ°€ μž…λ ₯ λ°μ΄ν„°λ‘œ μ •ν™•ν•œ Camera poseλ₯Ό μš”κ΅¬ν•˜κ³  μžˆλ‹€λŠ” 점을 μ§€μ ν•˜κ³  μžˆλŠ”λ°, λ‹€μ‹œ λ§ν•˜λ©΄ μž…λ ₯ 이미지 데이터와 ν•œ 쌍으둜 μžˆμ„ transformation 값이 λΆ€μ •ν™•ν•˜κ±°λ‚˜ μ•Œ 수 없을 κ²½μš°μ—λŠ” λ‰΄λŸ΄ λ Œλ”λ§μ˜ 정확도가 λ–¨μ–΄μ§€κ²Œ λœλ‹€λŠ” 것이닀.

February 17, 2023 Read
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CNN의 기본적인 ꡬ쑰 및 원리 - 1

처음 νšŒμ‚¬μ—μ„œ 인곡지λŠ₯ 업무λ₯Ό λ°°μ •λ°›κΈ° 이전에, 기본적인 CNN ꡬ쑰에 λŒ€ν•΄ ν™•μ‹€νžˆ μ•Œκ³  κ°€μ•Ό μ œλŒ€λ‘œ ν™œμš©ν•  수 μžˆκ² λ‹€λŠ” 이야기λ₯Ό λ“£κ³  CNN ꡬ쑰뢀터 ν™•μ‹€νžˆ μ§šμ–΄κ°€κΈ° μœ„ν•΄ 기본적인 ꡬ쑰에 λŒ€ν•œ ν•™μŠ΅μ„ μ‹œμž‘ν–ˆλ‹€. 이 ν¬μŠ€νŠΈλŠ” μ‚¬λ‚΄μ—μ„œ μ„Έλ―Έλ‚˜λ₯Ό μ§„ν–‰ν–ˆλ˜ CNN 기초λ₯Ό λ‹€μ‹œ λ³΅μŠ΅ν•  κ²Έ μ €μž₯ν•˜λŠ” λΈ”λ‘œκ·Έ 글이닀. 사싀 μ„Έλ―Έλ‚˜λ₯Ό μ§„ν–‰ν•œ μ‹œκΈ°λŠ” μ˜¬ν•΄ 초이기 λ•Œλ¬Έμ— ꡉμž₯히 였래됐고, κΈ€ μžμ²΄λ„ κ·Έ λ•Œ λ‹Ήμ‹œμ— μ •λ¦¬ν–ˆλ˜ pptλ‚˜ λ…Έμ…˜ 등을 λ‚˜λ¦„ 잘 μ •λ¦¬ν•΄μ„œ μ μ–΄λ³΄λŠ” 글인데, λˆ„λ½λœ λΆ€λΆ„μ΄λ‚˜ 잘λͺ» μ κ±°λ‚˜ λΆ€μ‹€ν•˜κ²Œ μ„€λͺ…ν•œ 뢀뢄이 μžˆμ„ 수 μžˆλ‹€.

August 4, 2022 Read

Sunho Kim

AI Engineer at CMES Inc.

I am a research engineer interested in 3D computer vision. I am a computer vision algorithm engineer with 5 years of experience, and I am currently focusing on research for high-accuracy depth estimation. And I am very interested in Visual SLAM and Deep Learning, and keeping an eye on state-of-the-arts algorithms. Also, I am interested in developing efficient programs, especially modern C++ development.

Experiences

1
AI Engineer
CMES

Dec 2021 - Present, Seoul, Korea

Responsibilities:
  • Depth enhancement algorithm research using deep learning
  • 3D computer vision system design and development
  • Prior research of deep learning for 3D computer vision
Algorithm Engineer
ROBOTIS

Sep 2020 - Dec 2021, Seoul, Korea

Responsibilities:
  • Localization performance enhancement for outdoor delivery robots
  • Developing perception algorithms based on Modern C++
  • Survey of vision sensors ans LiDARs for outdoor delivery robots
  • Survey of enhancement for video streaming using GStreamer
2
3
VIRNECT

Mar 2019 - Sep 2020, Seoul, Korea

Research Engineer

July 2018 - Sep 2020

  • Computer vision-based algorithm development and manual test for augmented reality SDK
  • Various commercial AR SDK’s research and test
  • Open source Visual SLAM algorithm analysis and test
Project Manager

Mar 2019 - Sep 2020

  • Project manager of augmented reality-based welding guidance project
  • Project leader of augmented reality-based inspection guide of substation equipment project
  • Preparing proposals for other projects
Intern
KAIST Institute for Information Technology Convergence

Jun 2014 - July 2014, Daejeon, Korea

Responsibilities:
  • A study on the method of crime prediction system based on data mining
  • Participate to develop a web page for crime prediction system
4

Education
Gwangju Institute of Science and Technology
2016-2018
M.S in Electrical Engineering and Computer Science
Hanbat National University
2011-2014
B.S in Computer Engineering
Bugil academy
2007-2009
High school