daily

23년 새해 목표 24 Jan 2023

Vision Algorithm Engineer로 자주 사용되는 Technique 및 경험(Keep Update) 03 Jun 2022

Business English 03 Jun 2022

사회생활 하면서 고쳐야하는 점 2 20 May 2022

도박에대한 생각 01 May 2022

투자 마음가짐 23 Mar 2022

부동산 경매 주의 01 Feb 2022

좋은 글귀 15 Jan 2022

여행의 이유_김영하 좋은 글귀(독서 후기) 15 Jan 2022

我在中国工作的时候买房子计划的 05 Jan 2022

简单的投资战略 05 Jan 2022

연구, 일을 하면서 잊지말하야하는 자세 11 Nov 2021

연구실이 무슨 연구를 하는지 알아보려면 11 Nov 2021

무엇을 배웠는가(1) 06 Nov 2021

지나친 방어기재가 만들어낸 사회부적응 08 Aug 2021

스카이파크 동대문 1호점 격리 정말 스트레스 03 Jul 2021

회사를 여럿 바꾸면서 느낀 점 26 Jun 2021

인턴을 할 때 자세 26 Jun 2021

한국자동차연구원 2차 객체 인식 연구원 면접 07 Jun 2021

현대자동차 로보틱스 채용전환형인턴 2차 면접 03 Jun 2021

현대자동차 로보틱스 채용전환형인턴 1차 면접 03 Jun 2021

한국자동차연구원 1차 객체 인식 연구원 면접 03 Jun 2021

만도 1차 면접 후기(센서퓨전 알고리즘 설계 엔지니어) 03 Jun 2021

중국 평수와 한국 평수 차이 22 Mar 2021

LG전자 생산기술원 3차 면접 22 Mar 2021

LG전자 생산기술원 2 차 면접 후기 20 Jan 2021

LG전자 생산기술원 1 차 면접 후기 14 Jan 2021

만도 ADAS/BU 레이더 센서 개발 14 Jan 2021

현대자동차 자율주행시스템 개발 면접 후기 14 Jan 2021

네이버랩스 로봇 소프트웨어 면접 후기 14 Jan 2021

면접시 준비 했던 전공 관련 질문과 답변 14 Jan 2021

PTC Virtual Application Engineer 면접 후기(20년 12월) 02 Jan 2021

Nokia Mobile Robot 개발 인턴 면접 후기 02 Jan 2021

Midea Group 인턴 합격 늦은 후기 02 Jan 2021

싱가포르 vs 상해 vs 한국 17 Sep 2020

중국 회사 Anyhelper 헤드헌터 인턴직 면접 17 Sep 2020

Midea 가정용 자율주행 로봇 부문 인턴 면접 16 Sep 2020

관심있는 한국 로봇 회사들 14 Jul 2020

나를 만드는 말들 07 Jul 2020

상하이에 직장 찾기 30 Jun 2020

현대 H-Experience 자율주행 센서퓨전 개발 면접 후기 19 May 2020

로봇 공학 석사 과정 11 May 2020

컴퓨터 공학 비전공자가 개발자 되기 위한 노력 11 May 2020

마이크로 소프트 인턴 면접 후기 24 Apr 2020

Seoul Robotics 후기 15 Apr 2020

Microsoft Coding Test Round 1 후기 15 Apr 2020

MS round2 준비 15 Apr 2020

开始选择论文主题 17 Sep 2019

Singapore 3 Day 04 Sep 2019

Singapore 2 Day 03 Sep 2019

Singapore 1 Day 02 Sep 2019

Finally start Blog(开始博客) 28 Aug 2019

C++

cxx error and add library path 18 Dec 2022

Create File or Dir and ignore directory in C++ 18 Dec 2022

Double Pointers Example 01 Oct 2022

colorized std::cout and definition of inline function and typename and using and typedef and header 01 Oct 2022

Rvalue Reference(double address &&)가 무엇이고 왜 쓰는지 and "return *this" mean and "return reference" mean 01 Oct 2022

LAMDA C++ 01 Oct 2022

Allocator 이해하기 그리고 rebind의미 01 Oct 2022

Vector vs Deque vs Queue 20 May 2022

Pointer-Pointer Copy(Useful for copy data of pointer) and char*, const char* difference 13 Feb 2022

IMAGE, Pointcloud save and read Parser(데이터 포맷만 알고 있으면 어떤 것이든 할 수 있음) 13 Feb 2022

Deep Understanding of Reference LRValue and Pointer Relationship 13 Feb 2022

Heap and stack 간단 설명 31 Oct 2021

Condition Variable 31 Oct 2021

C파일에 구현된 함수를 C++에 사용하는 방법 31 Oct 2021

c++에서 Atomic은 무엇인가 31 Oct 2021

연산자 Operator 활용하기 22 Oct 2021

오버로딩, friend class 20 Oct 2021

upcasting, downcasting 과 virtual, override 관계 20 Oct 2021

this란, const 멤버 함수 19 Oct 2021

지시자, 매크로 상수, inline 사용 19 Oct 2021

포인터 예약어 선언 의미 19 Oct 2021

포인터, 더블포인터 쉽게 이해하기 18 Oct 2021

선행처리자의 이해 수정필요 18 Oct 2021

더블포인터 사용 이유 벡터 05 Jul 2021

더블포인터와 해쉬테이블 이용, 단기간 거리 찾을 때 Spanning tree 30 Jun 2021

재귀함수에 대한 이해.. 29 Jun 2021

다이나믹 프로그래밍 컴퓨터 공학적 사고를 위한 이해2 29 Jun 2021

다이나믹 프로그래밍 컴퓨터 공학적 사고를 위한 이해 29 Jun 2021

그리드 알고리즘 언제 쯤 사용? 29 Jun 2021

static_cast<>이란 무엇일까. 22 Jun 2021

changing code history tracking 방법 19 Jun 2021

STD::SET 특성 및 이용 이유 18 Jun 2021

31. Auto Pointer 01 Oct 2019

30. Standard Template library(STL) - List, Stack & Queues, Complex Data 30 Sep 2019

29. Standard Template library(STL) - Vector 29 Sep 2019

28. Standard Template library(STL) - Map 28 Sep 2019

27. Computational Complexity(작업 처리 속도) 27 Sep 2019

26. File 26 Sep 2019

25. Custom Exceptions 25 Sep 2019

24. Mini Database 24 Sep 2019

23. Fstream(3) 23 Sep 2019

22. Fstream(2) 22 Sep 2019

21. Fstream 21 Sep 2019

20. Exceptions & Namespaces 20 Sep 2019

19. Class-Templates & Typedef 19 Sep 2019

18. Library 연습문제 18 Sep 2019

17. Polymorphic Pointer 17 Sep 2019

16. Static-Variables-and-Functions 16 Sep 2019

15. Polymorphism-Virtual-Functions-Abstracts-Classes 15 Sep 2019

14. Inheritance-between-Classes 14 Sep 2019

13. Constructor 13 Sep 2019

12. Class 12 Sep 2019

11. start Project in codeblock 11 Sep 2019

10. Pointer 응용 (Lottery) 10 Sep 2019

9.Data Structure & Pointer 09 Sep 2019

8.Pointer(Dynamic Memory) 08 Sep 2019

7.Reference and Enum-type 07 Sep 2019

6.Functions 06 Sep 2019

5.Loops 05 Sep 2019

4.Arrays 04 Sep 2019

3.Conditions 03 Sep 2019

2.Logical-Operators 02 Sep 2019

1.자료형 크기 01 Sep 2019

Python

Switching Pythons version 18 Dec 2022

data stream visualization in web 18 Dec 2022

15. SMILING FACES DETECTOR 15 Sep 2019

14. BREAST CANCER CLASSIFICATION 14 Sep 2019

13. Predicting Revenue Using Simple Linear Regression 13 Sep 2019

12. predict avocado price 12 Sep 2019

11. Amazon Review 11 Sep 2019

10. PDF FILES Manipulations 10 Sep 2019

9. Face and Eye Detection 09 Sep 2019

8. Day Planner 08 Sep 2019

7. Sketch Effect using live webcam 07 Sep 2019

6. Tic Tac Toe game 06 Sep 2019

5. Zodiac Sign 05 Sep 2019

4. Detect Lane in Camera images 04 Sep 2019

3. Fortune Teller Games 03 Sep 2019

2. Cartoon Effect 02 Sep 2019

1. Guessing Game 01 Sep 2019

Programming

Lib과 Share, include를 build안에 생성하고 시스템 안에 있는 library 특징 및 경로, 합치기 등을 해보기 18 Dec 2022

Docker 이해(경험으로 부터) 및 명령어들 18 Dec 2022

understanding cmake by experience and error(0) 18 Dec 2022

understanding cmake by experience and error(0) 18 Dec 2022

git clone from another git server 15 Dec 2022

CI/CD Docker 15 Dec 2022

How To Alias in Linux 15 Dec 2022

SSH 파일 GUI로 쉽게 옮기(FileZilla) 및 손쉽게 Folder(window) path 찾기 01 Oct 2022

Ubuntu moving-windows-from-the-keyboard 01 Mar 2022

Buffer Over Flow Problem 01 Mar 2022

Extend SWAP(KILL PROGRAM SELF DUE TO LACK OF RAM) 01 Mar 2022

VIM useful Command 01 Mar 2022

Profile new library at local 13 Feb 2022

CMAKE 이후 생성된 LIB과 특정 cfg share folder에 보존하기 13 Feb 2022

SSH로 파일 옮기기 13 Feb 2022

PID Check 그리고 Kill（command & c++) 13 Feb 2022

DHCP PWS to Notebook Connection way 13 Jan 2022

VNC로 원격 접속하기 12 Jan 2022

우분투 시스템 폴더 쉽게 접근 변경하기 11 Jan 2022

VSCODE를 쓸 때 쉬운 Debug방법 11 Jan 2022

git push가 안될 때 11 Jan 2022

타이핑이 암호화 되어 나올떄(FN키락 해제 방법) 11 Jan 2022

SSH 사용 방법(Server Key) 04 Jan 2022

Program Background running & check PID 28 Dec 2021

gitlab SSH로 편하게 관리하는 방법(keygen), Meta Package, Git Init이 안된다면, branch 생성, stash 14 Nov 2021

모듈을 때와서 쉽게 Debug 혹은 vscode debug 하는 방법 14 Nov 2021

CMAKE 유용 정보 및 컴파일 방법들 14 Nov 2021

리눅스 간단 명령어 for ros 31 Oct 2021

package에 대한 Tree 간단하게 만들기 31 Oct 2021

CPU Ultilization 31 Oct 2021

CI and CD 목적이 뭘까 31 Oct 2021

나만의 모듈화 및 몇가지 구조화 규칙[C++] 10 Oct 2021

리눅스에서 bashrc file, Shell, 커맨드 Source, Export의미 22 Mar 2021

Running 중 생기는 hyperopt error 28 Jan 2021

Mac M1 파이토치 및 머신러닝 에런 27 Jan 2021

Jekyll markdown 28 May 2020

고화질로 word파일 pdf파일로 변환하기 10 May 2020

(jekyll) Github 홈페이지 구글 애드센스 광고 사이드바,게시물 추가하기 16 Sep 2019

Linux 중요한 명령어 08 Sep 2019

Sensor fusion

Traditional Sensor Fusion Algorithm 24 Aug 2022

2-D Object Tracking using Kalman Filter(single sensor)_GPS원리 09 Jan 2022

GPS-IMU Sensor Fusion 원리 및 2D mobile robot sensor fusion Implementation(Kalman Filter and Extended Kalman filter) 08 Jan 2022

pre_integration imu 19 Oct 2021

what is lidar sensor 28 Apr 2021

what is Pointcloud 28 Apr 2021

lidar on autonomous car in C++ 28 Apr 2021

PointCloud Segmentation in C++ 28 Apr 2021

Fusion in kalman filter in Matlab STEP 2 27 Apr 2021

Fusion in kalman filter in Matlab STEP 1 27 Apr 2021

why sensor fusion need | sensors pros & con | Kalman Filter 26 Apr 2021

5. how to track multiple object at once 12 May 2020

4. Tracking a Single Object with an IMM Filter 12 May 2020

3. Fusing a GPS and IMU to Estimate Pose 12 May 2020

2. Sensor Fusion for Localization and Multi-object Tracking 12 May 2020

1. Fundamental of Sensor Fusion 12 May 2020

Smart Stick for the blind 16 Sep 2019

Reinforcement Learning

24. TD LAMDA 08 Oct 2019

23. N-step Methods 07 Oct 2019

22. Plug in Neural network and racap OPENAI 06 Oct 2019

21. RBF Neural Network with cartpole 05 Oct 2019

20. RBF Neural Networks 04 Oct 2019

19. Cartpole with bins 04 Oct 2019

18. Random Search within OpenAI 03 Oct 2019

17. OpenAI Gym Tutorial 03 Oct 2019

16. DeepLearning Overview 02 Oct 2019

15. Review 01 Oct 2019

14. Approximation Methods 30 Sep 2019

13. TD Temporal Difference Learning 29 Sep 2019

12. Monte Carlo Methods 29 Sep 2019

11. Introduction to Dynamic Programming 29 Sep 2019

10. Value Function(2) & Bellman Equation 28 Sep 2019

9. Markov Decision Processes 28 Sep 2019

8. Tic-Tac-Toe 25 Sep 2019

7. The Value function 24 Sep 2019

6. Build a Intelligence 23 Sep 2019

5. Nonstationary bandit 22 Sep 2019

4. UCB1 and Bayesian Method 21 Sep 2019

3. Multi Armed Bandit 20 Sep 2019

2. Defining Reinforcement Learning 19 Sep 2019

1. Reinforcement Learning Introduction 18 Sep 2019

ROBOTICS

Affine Tranformation(2D, 3D) 12 Jan 2022

Path Planning, Motion Planning and Hardware Platform 05 Jan 2022

Euclidean & Topology 08 Apr 2021

Least Square에 대한 개념 08 Apr 2021

Monte Carlo 직관적 이해 31 Mar 2021

Covariance와 Variance 구하는 법 30 Mar 2021

Singularity & Gimbar lock 문제 30 Mar 2021

Holonomic & NonHolonomic 30 Mar 2021

2. Introduction to Autnomous Navigation 2 14 May 2020

1. Introduction to Autnomous Navigation 13 May 2020

7. Work space Monitoring 07 Oct 2019

6. path planning 06 Oct 2019

5. Inverse Kinematics 05 Oct 2019

4. Kinematic Model(Direct Transformation) 04 Oct 2019

3. Transformation Frame 03 Oct 2019

2. Frame Operation 02 Oct 2019

1. ROBOTIC FUNDAMENTAL 01 Oct 2019

Multi-Agent path finding(MAPF) & REDUCTION-BASED SOLVERS 27 Sep 2019

Multi-Agent path finding(MAPF) & Search algorithm 26 Sep 2019

통신

USB 연결 문제에 대한 여러 접근 및 Reference 18 Dec 2022

Some Useful Command of SSH and tar, linux 15 Dec 2022

Realsense revision 24 Aug 2022

ROS CAN 통신(Kvaser) 20 May 2022

CPU에 대한 간단한 지식(thread, limit performance) 20 May 2022

Realsense Driver and USB Connection Problem 01 Mar 2022

Realsense GhostPointCloud 제거 하기(Realsense Parameter 세팅 방법) 01 Mar 2022

Realsense 쓸데 없는 topic 지우기(external syncs too) 13 Feb 2022

GPS RTK, NTRIP 도식화 이해 29 Jan 2022

TX, RX의미 04 Jan 2022

GENLOCK 이란(Realsense MultiCAM Implementation) 04 Jan 2022

GPS 시스템과 enu, utm, ecef 등 여러 좌표계 시스템 28 Dec 2021

TCP와 UPT의 차이 21 Apr 2020

TCP/IP 이해하기 21 Apr 2020

TCP 개념 2 21 Apr 2020

TCP 개념 21 Apr 2020

gRPC란 무엇인가 29 Sep 2019

ROS

Create and Customize rviz tool 18 Dec 2022

Nodelet Issue 18 Dec 2022

ROS MULTI THREAD CALLBACK FUNCTION 15 Dec 2022

BagFromImage Package for Noetic 01 Mar 2022

ROS PLUGIN(시스템에 확장 사용할 수 있는) 의미 14 Feb 2022

nodelet 개념 13 Jan 2022

CMAKE에서 주의해야 될 점 12 Jan 2022

GBD로 ROS 디버그 쉽게 하는 방법 12 Jan 2022

CPU 쉽게 체크 방법 15 Dec 2021

ROS SPIN을 이제 이해하다니... 14 Nov 2021

머신러닝에서의 앙상블 19 Oct 2021

Debug 쉽게하는 법[C++, ROS] 19 Oct 2021

Noetic Macro problem. 18 Oct 2021

undefined reference[C++, ROS] 10 Oct 2021

~ is private within this context"[C++, ROS] 10 Oct 2021

ROS2에서 ROSCORE 안쓰는 이유 22 Mar 2021

Controller problem 16 Oct 2019

Pose Collision error 16 Oct 2019

Useful ROS CHEET SHEET 16 Oct 2019

Soem install error 16 Oct 2019

Gazebo and Moveit connect 16 Oct 2019

planning pipeline 의미 15 Oct 2019

Moveit Commander problem 14 Oct 2019

install opencv in ros kinetic 13 Oct 2019

Installing OpenCV in Ubuntu for Python 3 13 Oct 2019

gazebo model database 11 Oct 2019

Include error 11 Oct 2019

9. ROS Manipulate 09 Oct 2019

10. TF2 ROS 09 Oct 2019

8. ROS Navigation stack 08 Oct 2019

7. URDF 07 Oct 2019

6. object_generator 06 Oct 2019

5. Motion Planning 05 Oct 2019

4. Cartesian Control 04 Oct 2019

3. Forward Kinematic 03 Oct 2019

2. TF tutorial 02 Oct 2019

1. Make Msg file and scripts 01 Oct 2019

0.1 ROS Basic 01 Oct 2019

0. ROS Basic 01 Oct 2019

Move_base_msgsConfig error 01 Oct 2019

Ubuntu 16.04 Lite에 가상 환경 python3 설치하기 30 Sep 2019

Optimization method

Iteration 왜 하는지? (개념의 Convex Optimization) 12 Jan 2022

Meaning of Gradient and Gradient Methods(Convex Optimization) 07 Jan 2022

Covariance Matrix Propagation and Information Matrix Propagation relationship with Gaussian(Normal) Distribution, Optimization, Probabilistic notion 07 Jan 2022

PSO vs Particle Filter 19 Oct 2021

9. Newton's and Quansi-Newton methods 09 Oct 2019

8. Gradient Methods 08 Oct 2019

7. One Dimensional Search Methods 07 Oct 2019

6. Optimization concave and convex 06 Oct 2019

6 Optimization Condition 06 Oct 2019

5. Optimization basics 05 Oct 2019

4. Convex sets and functions 04 Oct 2019

3. Appendix- Elementary results and notations 03 Oct 2019

2. Optimization application 02 Oct 2019

1.Introduction to Optimization 01 Oct 2019

Deep Learning

Network를 가볍게 가져가야 하는 이유 11 Nov 2021

2. TensorFlow warmup 02 Oct 2019

1. Introduction to Neural Networks 01 Oct 2019

calculus

why square root and hessian matrix and error state kalman filter 29 Oct 2022

notion about differential and partial differential 24 Aug 2022

Rodrigues formula rotation matrix and lie group relationship 20 May 2022

Vector Normalization(Covariance Matrix, mass points) 23 Mar 2022

Sequential quadratic programming(Gradient Newton, LM, etc) 23 Mar 2022

PCA and SDV Difference 23 Mar 2022

NDT(Normal Distribution tranform) 23 Mar 2022

Bezier Spline 23 Mar 2022

Singularity and embedding vector, orthgonal meaning 13 Feb 2022

Sensor Fusion 할때 Sensor 관련 Variance 업데이트 및 error cost function에서의 delta x 최적화 개념(Data Propagation) 14 Jan 2022

Interpolation 개념 13 Jan 2022

heuristic vs Metaheuristics 12 Jan 2022

Covariance Propagation meaning 06 Jan 2022

RANSAC에 많이 쓰이는 Line Fomular, Plane Fomular 21 Nov 2021

Reproducing Kernal Hilbert space 21 Nov 2021

Frobenius norm(Euclidean Norm) 21 Nov 2021

PCA를 이해해 보자 20 Nov 2021

Orthogonal Important to every Application 17 Nov 2021

FINDING OPTIMAL ROTATION AND TRANSLATION BETWEEN CORRESPONDING 3D POINTS 17 Nov 2021

cross product vector the way to matrix multiplication meaning 17 Nov 2021

Collinearity 17 Nov 2021

Injection Function 16 Nov 2021

Empirical Distributions(经验分布函数) 01 Nov 2021

normal vector 용도 및 plane margin의 의미 31 Oct 2021

Least Square 간단 이해 31 Oct 2021

Difference between Variance and Standard Deviation 23 Oct 2021

법선 벡터을 이용한 어플리케이션 및 방법 22 Oct 2021

Gaussian 방법을 이용한 Machine learning 20 Oct 2021

likelihood(가능도) VS Probability(확률) 16 Mar 2021

Log odd, Logit에 대한 이해(Logistics Regression에 많이 쓰임) 16 Mar 2021

Similarity Transformation 15 Mar 2021

Recursive Bayes Filter 15 Mar 2021

1. essence of e 01 Oct 2019

Data structure_1

18.Graph Terminology 18 May 2020

17. Heap Notes 17 May 2020

16. Tree Notes 16 May 2020

15.Stable vs Non_stable 15 May 2020

14. Merge sort 14 May 2020

13. Quick sort 13 May 2020

12.Insertion sort 12 May 2020

11.selection Sort 11 May 2020

10. Bubble Sort 10 May 2020

9.Queue 09 May 2020

8. Stack 08 May 2020

7. Doubly-Linked List 07 May 2020

6.sinlgy-Linked List 06 May 2020

5. Circular and Dynamic Array 05 May 2020

4. Fixed Array 04 May 2020

3.N-Notation 03 May 2020

2. Math Refresher Notes for Computer science. 02 May 2020

1. Binary Number system 01 May 2020

1. Queue Stack (Queue and BFS) 02 Nov 2019

1. Queue Stack(First in First Out data) 01 Nov 2019

SLAM

Loosly Couple vs Tightly Couple Mean 18 Dec 2022

SLAM KR QUESTION AND ANSWER 15 Dec 2022

Useful study reference for slam 29 Oct 2022

Colmap SIFT GPU and Spatial matching(COLMAP GOOD REFERENCE TO MAKE, Utilize them) 13 Feb 2022

G2O Process Step and Tutorial, and Another Solver 13 Feb 2022

Max Mixture와 Switchable constraints 13 Feb 2022

PointcloudXYZNormal && Correspondence(ICP/GICP에 사용) 31 Jan 2022

간단 FULL BA and LOCAL BA 13 Jan 2022

Lidar SLAM Utilizing Normal Distribution Transform and Measurement Consesus 09 Jan 2022

Glaph SLAM Bundle Adjustment Tutorial 04 Jan 2022

The Normal Distribution Transform lidar slam(理论，实战) 21 Nov 2021

李代数和李群 03 Nov 2021

Factor Graph vs Pose Graph and Bundle adjustment 31 Oct 2021

Factor Grpah 19 Oct 2021

SLAM 백엔드 06 Jul 2021

Yolo와 Multi Geometry를 이용한 세멘틱 슬램 05 Jul 2021

Yolo와 Multi Geometry를 이용한 Object pose estimation 05 Jul 2021

SLAM 프론트 엔드 05 Jul 2021

Factor Graph 08 Apr 2021

Graph SLAM 07 Apr 2021

1. ORB_SLAM2 코드 분석 13 Jan 2020

STL Programming Practice_1

18.Knapsack problem 27 May 2020

17.Dynamic Programming - Fibonachi 26 May 2020

16.sorting structure 25 May 2020

15.Constructors example 24 May 2020

14.data structure - bookshelf 23 May 2020

13.majority element(가장 많은 수) 22 May 2020

12.basic sorting 21 May 2020

11.Binary Search - Finding first or last occurrence of a number 20 May 2020

10.GOLD trick(Mars Trickery) 19 May 2020

9. Binary Search 18 May 2020

8. QUEUE 17 May 2020

7. Stack 16 May 2020

6. Counting Sort 15 May 2020

5. Appearance array 14 May 2020

4. Analyse time complexity 13 May 2020

3.Global/Local Variable 12 May 2020

2. Creating Project. 11 May 2020

1. How to use STL 10 May 2020

CS

xavier를 로봇에 추가적으로 사용 하는 이유 15 Dec 2022

CPU 물리코어 가상코어 차이 15 Dec 2022

41. Object oriented programming 20 May 2020

40.Structed programming 20 May 2020

39.Multi-Core Processors 20 May 2020

38. types of Programming Paradigms 20 May 2020

37.Programming Paradigms 20 May 2020

36. Platform in Computer Science 20 May 2020

35. Program Compilation Step by step 20 May 2020

34. Machine code instruction and linking 20 May 2020

33. Algorithm 20 May 2020

32. Computer Programming 20 May 2020

31.BIOS/CMOS configuration 20 May 2020

30. Computer system - BIOS 20 May 2020

29. Operating System Booting process 20 May 2020

27. Operating System Management 20 May 2020

27. Operating System Functions 20 May 2020

26. Operating System architecture 20 May 2020

25. Operating System 19 May 2020

24. Computer system Bus 19 May 2020

23. MotherBoard Buses 19 May 2020

22. Compose of Motherboard 19 May 2020

21.what is a CPU CLOCK 19 May 2020

20. CPU - Registers 19 May 2020

19. CPU - types, speed, performance 19 May 2020

18. CPU-instruction Cycle step by step 19 May 2020

17. CPU-instruction Cycle 19 May 2020

16.How CPU executes a Program 19 May 2020

15.CPU and Cache Memory 19 May 2020

14. Cache Memory 19 May 2020

13. Virtual Memory 19 May 2020

12. Random Access Memory(RAM) 18 May 2020

11. Read Only Memory(ROM) 18 May 2020

10. instructions and Memory Management 18 May 2020

9. Computer Architecture 17 May 2020

8. Computer System Memory 17 May 2020

7. Binary Code and ASCII 17 May 2020

6. Binary code and logic gates 17 May 2020

5. Number System 13 May 2020

4. Computer Systems Architecture 13 May 2020

3. Computer System 12 May 2020

2. CPU 12 May 2020

1. Fundamental of Computer science and programming 12 May 2020

Modern C++

10.template, Iterator, Error Handling, Program input parameter, Opencv 31 May 2020

9. Smart pointers, Associative containers, type casting, Enumeration classes, Read/write binary files. 30 May 2020

8. pointer, stack and heap, memory leaks, dangling pointers 30 May 2020

7. Static Variables, Method, Representation of numbers in memory, Raw C array, Non-owning pointers in C++, Classses in memory 30 May 2020

6. polymorphism, I/O, String streams, Cmake find_package 30 May 2020

5. Move semantics, Classes 30 May 2020

4. Google tests, Namespaces, Classes 30 May 2020

3.Compilation, Functions, Source, Library and Cmake 29 May 2020

2.Modern C++ and git 28 May 2020

1.Modern C++ Introduction 28 May 2020

Algorithm

35. Graphs 2 26 Jun 2020

34. Graphs 24 Jun 2020

33. Hashing Technique 24 Jun 2020

32. Sorting Technique 2 24 Jun 2020

31. Sorting Technique 1 23 Jun 2020

30. Self balancing tree using Heap 22 Jun 2020

29. Search Trees 2 22 Jun 2020

28. Search Trees 19 Jun 2020

27. AVL Trees(Self-balancing binary search tree) 19 Jun 2020

26. Binary Search Trees 19 Jun 2020

25. Trees 3(Code) 19 Jun 2020

24. Trees 2(Code) 19 Jun 2020

23. Trees 19 Jun 2020

22. Queue 18 Jun 2020

21. Stack 2 18 Jun 2020

21. Stack 17 Jun 2020

20. Spares Matrix and Polynomial Using Linked list 17 Jun 2020

19. Linked List 4 17 Jun 2020

18. Linked List 3 16 Jun 2020

17. Linked List 2 16 Jun 2020

16. Linked List 1 15 Jun 2020

15. Polynomial Representation 15 Jun 2020

14. Application of Matrix Menu 15 Jun 2020

13. Matrices(Symmetric Mattrix, Tridiagonal Matrix, Band Matrix, Toeplitz Matrix, Sparse Matrix) 15 Jun 2020

12. Matrices(Diagonal Matrix, Lower Triangular Matrix, Upper Triangular Matrix) 15 Jun 2020

11. strings 12 Jun 2020

10. Array ADT represented problem solving 2 11 Jun 2020

9. Array ADT represented problem solving 03 Jun 2020

8. Array ADT 02 Jun 2020

7. Array representation 02 Jun 2020

6. Recursion exercise 02 Jun 2020

5. Recursion 01 Jun 2020

4. Essential concept (Physical and Logical data structure, ADT) 01 Jun 2020

3. Essential concept (Data Structure, Static and Dynamic Allocation) 01 Jun 2020

2. Essential concept(Parameter passing, structure and function) 01 Jun 2020

1. Essential concept(Array, Complex Number, Reference, Pointer) 31 May 2020

0.Introduction to Algorithms 31 May 2020

Daily Algorithms

82.프로그래머스[n명이 입국심사] 26 Mar 2021

81. 1부터 n까지 번호가 붙어있는 n명의 사람이 영어 끝말잇기 18 Mar 2021

81. Robot Bounded in Circle 18 Sep 2020

80. House Robber[중간] 15 Sep 2020

79. Repeated Substring Pattern 14 Sep 2020

78. Excel Sheet Column Number 11 Sep 2020

77. Pascal's Triangle II[쉬움] 10 Sep 2020

76. Vertical Order Traversal of a Binary Tree[슈퍼 어려움] 10 Sep 2020

75. Add and Search Word - Data structure design[Tries, Difficult] 09 Sep 2020

74. Find All Duplicates in an Array(easy) 09 Sep 2020

73. Valid Palindrome 08 Sep 2020

72. Design Hashset 08 Sep 2020

71. Power of Four(bitwise 사용) 07 Sep 2020

70. Detect Capital(쉬움) 07 Sep 2020

69. Subarray Sum Equals K(헷갈림) 26 Aug 2020

68. Bitwise AND of Numbers Range(보통) 25 Aug 2020

67. LRU Cache 21 Aug 2020

66. Longest Common Subsequence 20 Aug 2020

65. Jump Game [중간] 12 Aug 2020

64. Maximal Square [ 어려움 ] 12 Aug 2020

63. Binary Tree Maximum Path Sum(난이도 중) 12 Aug 2020

62. Construct Binary Search Tree from Pre-order Traversal [중간] 30 Jul 2020

61. Search in Rotated Sorted Array 30 Jul 2020

60. minimum path sums [중간] 30 Jul 2020

59. number of islands [어려움] 30 Jul 2020

58. Valid Parenthesis String[중간] 30 Jul 2020

57. Product of Array Except Self[문제 이해 어려움] 24 Jul 2020

56. Contiguous Array[어려움] 20 Jul 2020

55. Last Stone Weight 20 Jul 2020

54. Diameter of Binary Tree 20 Jul 2020

53. Backspace String Compare 18 Jul 2020

52. Middle of the Linked List 18 Jul 2020

51. GroupAnagrams 17 Jul 2020

50. Happy Number 17 Jul 2020

49. Missing Number 16 Jul 2020

48. Valid Parentheses 16 Jul 2020

47. Pascal's Triangle 16 Jul 2020

46. Reverse Bits(어려움) 16 Jul 2020

45. Hamming Distance(약간 헷갈림) 15 Jul 2020

44. Number of 1 Bits 15 Jul 2020

43. Roman to Integer 13 Jul 2020

42. Power of Three 13 Jul 2020

41. Count Primes 13 Jul 2020

40. Fizz Buzz 13 Jul 2020

39. Min Stack 13 Jul 2020

38. Shuffle an Array 13 Jul 2020

37. House Robber 13 Jul 2020

36. Maximum Subarray(难) 08 Jul 2020

35. Best Time to Buy and Sell Stock 08 Jul 2020

34. climbing Stairs 08 Jul 2020

33. First Bad Version 06 Jul 2020

32. Merge Sorted Array 06 Jul 2020

31. Convert Sorted Array to Binary Search Tree(我的缺点是TREE，以后有代码考试需要集中tree学习) 02 Jul 2020

30.Binary Tree Level Order Traversal(Difficult) 02 Jul 2020

29. Symmetric Tree 02 Jul 2020

28. Validate Binary Search Tree[어려움] 02 Jul 2020

27. Maximum Depth of Binary Tree 02 Jul 2020

26. Linked List Cycle 02 Jul 2020

25. Palindrome Linked List 02 Jul 2020

24. Merge two sorted List 02 Jul 2020

23. Reverse Linked List 02 Jul 2020

22. Remove N-th Node From End of List 02 Jul 2020

21. Delete Node in a Linked List 02 Jul 2020

20. Longest common Prefix 02 Jul 2020

19. count and say[난이도上] 02 Jul 2020

18. Implement strStr() 02 Jul 2020

17. String to Integer (atoi) 02 Jul 2020

16. Valid Palindrome Solution 01 Jul 2020

15. Valid Anagram 01 Jul 2020

14. First Unique Character in a String 01 Jul 2020

13. Reverse Integer 01 Jul 2020

12. Reverse String 01 Jul 2020

9. Move Zeros 30 Jun 2020

8. Plus One 30 Jun 2020

7. Intersection of Two Arrays 2 30 Jun 2020

6. Single Number 30 Jun 2020

5. Contain Duplicated 30 Jun 2020

4. Rotate Array 30 Jun 2020

3. Best Time to buy and sell stock 2 30 Jun 2020

2. remove duplicated from sorted array 30 Jun 2020

11. Valid sudoku 30 Jun 2020

10. Rotate Image 30 Jun 2020

1. Two Sum 31 May 2020

Visual SLAM

Understanding Realsense 15 Dec 2022

DLT, PnP, EPnP차이 15 Dec 2022

ORB SLAM3 24 Aug 2022

Introduction to Multi View Geometry(detail epipolar contraint) 24 Aug 2022

what is Marginzalization? why use 27 Mar 2022

EightPoints Algorithm(To find Essential Matrix and fundamental Matrix) 23 Mar 2022

VINS Fusion Total Process Summary 30 Jan 2022

Visual Odometery[VINS, ORBSLAM] in lidar map 30 Jan 2022

Bag of word를 통한 loop closure 11 Jun 2021

Bundle Adjustment 메카니즘 11 Jun 2021

Opitcal Flow 혹은 Direct Method로 구하는 Mappoints 및 Pose estimation 08 Jun 2021

Epipolar Contraint으로 얻어지는 Essential Matrix, Fundamental Matrix, Homography Matrix의 미지수들을 어떻게 구할까?? 08 Jun 2021

Visual Odometery & Pose Estimation(using Direct Method(intensity)) 13 Apr 2021

Visual Odometery & Pose Estimation 12 Apr 2021

25. Voxel Hashing 23 Jun 2020

24. Mapping TSDF 23 Jun 2020

23. Mapping Octomap 23 Jun 2020

22. Bag of visual words 22 Jun 2020

21. Stereo Matching(Map Generation) 22 Jun 2020

20. Loop Closure Detection 22 Jun 2020

19. Backend 2 22 Jun 2020

18. Pose estimation[Backend] (Bundle Adjustment) 21 Jun 2020

17. Pose estimation[Backend] (Kalman filter) 21 Jun 2020

16. Visual odometer(Optical Flow) 21 Jun 2020

15. Visual odometer(Direct Method) 21 Jun 2020

14. Visual odometer(3D-3D Matching(3D-3D로 자세 추정 방법)) 18 Jun 2020

13. Visual odometer(3D-2D Matching(3D-2D로 자세 추정 방법)) 18 Jun 2020

12. Visual odometer(2D-2D Matching & Triangulation(2D로 자세 추정 방법)) 18 Jun 2020

11. Visual odometer(Feature point) 18 Jun 2020

10. State Estimation. 17 Jun 2020

9. Non Linear Least Square 17 Jun 2020

8. Lie Group and Lie Algebra Practice 17 Jun 2020

8. Lie Group and Lie Algebra 3 (Derivative of Lie Algebra) 17 Jun 2020

7. Lie Group and Lie Algebra 2 17 Jun 2020

6. Lie Group and Lie Algebra 1 15 Jun 2020

5. Stereo & RGB-D camera model and Image Information 15 Jun 2020

4. Camera Model & Camera Distortion Practice 15 Jun 2020

4. Camera Model & Camera Distortion 15 Jun 2020

3. visualize Geometry practice 02 Jun 2020

3. Represent 3D Rigid Body Transform using Quternion 02 Jun 2020

2. 3D Rigid Body Transform practice(Eigen) 02 Jun 2020

2. 3D Rigid Body Transform 02 Jun 2020

1. introduction to Visual SLAM practice. 02 Jun 2020

1. introduction to Visual SLAM 01 Jun 2020

Control System

4. Proportional Integral Derivative (PID) Control 30 Dec 2020

3. Proportional Integral(PI) Control 29 Dec 2020

2. Proportional(P) Control 28 Dec 2020

1. PID System 27 Dec 2020

14. The PID Controller and Ziegler-Nichols Design Method 26 Dec 2020

13. The Proportional Plus Derivative Feedback(PDFB) Controller 25 Dec 2020

12. The Proportional Plus Derivative(PD) Controller 24 Dec 2020

11. The Proportional Plus Integral(PI) Controller 23 Dec 2020

10. The Proportional Controller 22 Dec 2020

9. closed Loop Control 21 Dec 2020

8. Open Loop Control 20 Dec 2020

7. Stability and Block Diagrams 19 Dec 2020

6. Transfer Function 18 Dec 2020

5. Laplace Transforms(Solving linear Differential Equations) 17 Dec 2020

4. Laplace Transforms 16 Dec 2020

3. Electro-Mechanical System 15 Dec 2020

2. Mechanical System 14 Dec 2020

1. System and Signals 13 Dec 2020

ROS2

How to create a ROS2 Workspace 26 Mar 2021

How to create a Simple Publiser 26 Mar 2021

How to create a ROS2 Package for C++ 26 Mar 2021

How to create a ROS2 Package for python 26 Mar 2021

How to create a ROS2 Package for python 26 Mar 2021

How to Publish & Subscribe to a ROS2 topic 26 Mar 2021

How to launch a ROS2 Node 26 Mar 2021

ROS1와 ROS2의 차이, 바뀐점 [2] 22 Mar 2021

ROS1와 ROS2의 차이, 바뀐점 22 Mar 2021

ROS2에서 GAZEBO 22 Mar 2021

ROS1 패키지 ROS2에 연결하는 방법 22 Mar 2021

Machine Vision

hough transform and canny edge and vanishing sailroad point information apply watershade algorihtm 18 Dec 2022

Ego Vehicle 15 Dec 2022

Netvlad Image Recognition Reference and comparison between indirect and direct method 01 Aug 2022

Multi Plane Segmenation Idea(그리고 PCL구조 이해 42个PCL Tutorials) 01 Mar 2022

HomoGraphy(perspective Transform, Bird Eyes View) 13 Feb 2022

VO Pipe Line 20 Jan 2022

slope estimation(곡선 길이 및 곡률 계산) 13 Jan 2022

IR SENSOR on Mirror 13 Jan 2022

SuperPoint와 SuperGlue 설명 11 Jan 2022

Realsense Filter의 의미 11 Jan 2022

Pointcloul Channel을 이용하여서 clustering에 활용 09 Jan 2022

Depth Image to PCL 07 Jan 2022

Robot-Centric Elevation Mapping with uncertainty estimate(sensor variance, motion variance활용) 06 Jan 2022

Orthogonal procrustes problem(to find Rotation and Translation/3D RIGID TRANSFROMATION) 21 Nov 2021

LidarTags 21 Nov 2021

ICP 완전 쉬워용 21 Nov 2021

Efficient Organized Point Cloud Segmentation with Connected Components 21 Nov 2021

데이터들을 pointer로 관리를 하면서 하나씩 읽는 것이 cost에 좋다. 14 Nov 2021

각 벡터 Quaternion 각도 구하는 법, quaternion times its conjugate transpose meaning? 14 Nov 2021

Affine transformation 특징 및 Eigen Expression 14 Nov 2021

RANSAC 간단 요약[NDT-RANSAC BASED Segmentation] 13 Nov 2021

Normal surface, normal vector 관한 이해 13 Nov 2021

An Improved RANSAC for 3D Point Cloud Plane Segmentation based on normal distribution transformation cells. 13 Nov 2021

Optical Coordinate 11 Nov 2021

常用的Opencv 函数 31 Oct 2021

3-D Reconstruction with Vision 30 Oct 2021

Integral Image를 사용한 Normal Surface 구하기 23 Oct 2021

Yolov3 간단 메카니즘 17 Jun 2021

orthophoto 08 Apr 2021

이미지 매칭 방법 07 Apr 2021

Essential Matrix, Fundamental Matrix 07 Apr 2021

Zhang's Method Calibration & Direct Linear Transformation 07 Apr 2021

Machine Learning

Minimal Solver vs Non Minimal Solver 15 Dec 2022

Minimal Solver vs Non Minimal Solver 15 Dec 2022

PSO(Particle Swam Optimization) 간단 workflow 20 May 2022

Gaussian Distribution에서 Maximum LikelyHood(Log LikelyHood)를 구하고, 그의 용도 13 Feb 2022

epoch, batch size, iteration의 의미 09 Jan 2022

KD-TREE and K-Means clustering Implementation 08 Jan 2022

Ransac(Random Sample Consensus) 07 Apr 2021

Library

when code useful Program 18 Dec 2022

fiji linux(이미지 인지 간단 작업) 및 이미지 복원 15 Dec 2022

Boost Library 사용하는 이유 15 Dec 2022

Opencv 3.2 Install 15 Dec 2022

Nvidia install in linux for CUDA 15 Dec 2022

Ceres Easy Installation 13 Feb 2022

Colmap dependency install(Colmap 설치 방법) 13 Jan 2022

Ubuntu에 Cuda Install 13 Jan 2022

g3log 사용 방법 06 Nov 2021

guitar

Guitar Number of note 24 Aug 2022

Embedded

Introduction to Electrotechnics and Electronics 24 Aug 2022