Archives

2026

09 Jun Image Segmentation
07 Jun Object Detection YOLO
04 Jun Defect Inspection
02 Jun Publisher and Subscriber
25 May Convolution RGB with SIMD
24 May 23. Concurrency Processing - C++
24 May Convolution with SIMD
24 May 09. Why VSCode + CMake Sometimes Builds the Wrong Folder
19 May 22. Concurrency Processing - Advanced
18 May 21. Concurrency Processing
14 May 20. Pos Estimation
14 May 19. Camera Calibration
13 May 18. Optical Flow
13 May 17. SIFT
12 May 16. Harris Corner
12 May 15. Hough Transform
12 May 14. Threshold
12 May 13. Morphology
12 May 12. Filter
12 May 11. Convolution
12 May 10. Histogram
12 May 09. Resize and Interpolation
12 May 08. Channel Integrator and Extractor
12 May 07. Copy and Paste
12 May 06. Image Format
12 May 05. Video
11 May 04. Image Viewer
11 May 03. Image as data
11 May 02. Set Environment with virtual machine
11 May 01. Why we use opencv
11 May 32. AWS CLI Examples
05 May Hands-on 07. SHAP
05 May Hands-on 06. Isolation Forest
05 May LeetCode 543. Diameter of Binary Tree
05 May LeetCode 42. Trapping Rain Water
05 May LeetCode 124. Binary Tree Maximum Path Sum
04 May Hands-on 05. Random Forest
04 May Hands-on 04. BallTree
04 May Hands-on 03. DBSCAN
04 May Hands-on 02. PCA
04 May Hands-on 01. KMeans
03 May 31. Route 53, CloudFront and private S3
01 May 30. Automation: Git, Athena(SQL) and Deploy index.html to S3 Storage with CI/CD
29 Apr 29. Glue,Lambda and EventBridge
29 Apr 28. Data processing jobs with SageMaker
29 Apr 27. AI Model from deploy to Lambda + S3 with SageMaker
29 Apr 26. AI Model from deploy to EC2 Server with SageMaker
29 Apr 25. Deploy AI Model from the scratch
28 Apr 24. SageMaker VSCode Connecting S3
28 Apr 23. AWS SageMaker for ML/AI
22 Apr LeetCode 53. Maximum Subarray
22 Apr LeetCode 217. Contains Duplicate
22 Apr LeetCode 121. Best Time to Buy and Sell Stock
21 Apr LeetCode 200. Number of Islands
21 Apr LeetCode 133. Clone Graph
21 Apr LeetCode 206. Reverse Linked List
21 Apr LeetCode 104. Maximum Depth of Binary Tree
21 Apr LeetCode 704. Binary Search
21 Apr LeetCode 125. Valid Palindrome
21 Apr RAII & SOLID — Core Design Principles in C++
21 Apr Google Test (GTest)
20 Apr 07. DevOps about Monitor
20 Apr 07. DevOps about Operate
20 Apr 03. DevOps about Deploy
20 Apr 03. DevOps about Test
20 Apr 03. DevOps about Build
20 Apr 03. DevOps about Code
20 Apr 02. DevOps about Plan
20 Apr 01. DevOps Flow
19 Apr QA - Section 1.06. Debugging & Optimizing Parallel Code
19 Apr std::multiplies
18 Apr std::reduce
18 Apr std::accumulate
18 Apr std::inclusive_scan
18 Apr std::transform
18 Apr std::execution
18 Apr std::execution::par
18 Apr std::for_each
17 Apr QA - Section 1.05. Concurrency
17 Apr std::condition_variable
16 Apr QA - Section 1.04. Synchronization & Shared Resources
16 Apr QA - Section 1.03. Parallel
16 Apr QA - Section 1.02. Multithreading & Concurrency
16 Apr QA - Section 1.01. Smart Pointer and API
16 Apr std::async vs Thread Pool
16 Apr Rule of Five
16 Apr std::atomic and std::mutex
15 Apr std::lower_bound and std::upper_bound
15 Apr Smart Pointers
15 Apr Regular Expression
15 Apr std::regex_iterator
14 Apr std::find, std::search, std::merge, std::erase
14 Apr Iterators
14 Apr std::allocator
14 Apr filesystem (C++17)
14 Apr Streams
14 Apr Class Template
14 Apr Template Specialization
14 Apr chrono
14 Apr std::launder and std::destroy_at
14 Apr std::forward
14 Apr std::bind and std::reference_wrapper
14 Apr std::function
14 Apr Function Pointers
14 Apr std::pair and std::tuple
14 Apr std::unordered_map
14 Apr std::map
14 Apr Move Constructor & Move Assignment
14 Apr Operator Overloading
14 Apr Function Overloading vs Overriding in C++
14 Apr Finalize Before Return: Avoid Partial Updates
13 Apr Data Type Optimization Based on CPU Architecture
13 Apr Inline Optimization
13 Apr Manual Pointer Management vs Garbage Collection
13 Apr Int vs Float in C++
13 Apr Data Type Size Optimization
13 Apr Copy Optimization
13 Apr Recursion Optimization
13 Apr Avoiding High-Latency Operations
13 Apr Exception Cost
13 Apr Allocation Cost
13 Apr Parameter Optimization
13 Apr Branch Optimization
13 Apr Memory Layout in C++
13 Apr Memory Access Optimization: Contiguous vs Non-Contiguous (C++)
13 Apr Compile-Time and Runtime in C++
13 Apr Bitmask
13 Apr 22. Deploy from Github Action to AWS Docker
12 Apr 04. Image Converter with Lambda
12 Apr 03. Send Text Message with Lambda
12 Apr 21. How to connect IAM on CLI
12 Apr 20. How to install AWS CLI
09 Apr 19. How to bring data from S3 to EC2
09 Apr 18. S3
08 Apr 02. Internet → ALB → Target Group → ASG → EC2
08 Apr 01. Private EC2 → NAT Gateway → IGW (IPv4 Flow)
08 Apr 17. RDS
08 Apr 16. How Template, Auto Scaling Group, Elastic Load Balancer and Target Group work together
08 Apr 15. Load Balancers
08 Apr 14. Target Groups
08 Apr 13. Auto Scaling Groups
08 Apr 12. Template
07 Apr 11. AMI
07 Apr 10. How EC2, VPC, Subnets, Internet Gateway, Route Tables, and NAT Gateway work together
07 Apr 09. Public/Private EC2
07 Apr 08. NAT Gateway
07 Apr 07. Route Table - Traffic Control
07 Apr 06. Internet Gateway
07 Apr 05. Subnet
07 Apr 04. VPC
07 Apr 03. EC2 Instance
07 Apr 02. IAM Account
07 Apr 01. What is AWS - Understanding Cloud Infrastructure
01 Apr 05. Docker CMD vs ENTRYPOINT
01 Apr 04. Accessing Docker Containers & Using Volumes
01 Apr 03. Docker CLI Commands
01 Apr 02. Docker Layer
01 Apr 01. What is Docker
31 Mar Mini.Project 01-05. Deploy: Integrated CMake, Docker and CI/CD
31 Mar Mini.Project 01-04. Deploy: Integrated CMake, Docker and CI/CD
31 Mar Mini.Project 01-03. Deploy: Integrated CMake, Docker and CI/CD
31 Mar Mini.Project 01-02. Deploy: Integrated CMake, Docker and CI/CD
31 Mar Mini.Project 01-01. Deploy: Integrated CMake, Docker and CI/CD
30 Mar 08. find_package() Works in CMake
30 Mar 07. CMake Step-by-Step Guide
29 Mar 06. CMake Grammer
29 Mar 05. CMakeLists.txt vs .cmake
29 Mar 04. CMake Flow
29 Mar 03. CMake Tutorial with OpenCV
29 Mar 02. CMake Tutorial, Multi-File C++
29 Mar 01. CMake Tutorial
18 Mar SIMD (Single Instruction Multiple Data)
14 Mar Loop Unrolling in 5x5 Convolution: Why It Matters
14 Mar Similar Function, But long code with Macro
13 Mar Basis of Function
13 Mar Function return
13 Mar Encapsulation
06 Mar Mistake Coding - Reference and Copy
06 Mar Clean Code Example 001
03 Mar BMP Format
03 Mar Low Coupling
03 Mar Stable Control Flow
03 Mar Coding Convention
03 Mar Matrix Calculus
03 Mar Pseudo-Inverse Matrix
03 Mar Symmetric Matrix
03 Mar SVD - Singular Value Decomposition
03 Mar PCA - Principal Component Analysis
03 Mar Eigenvectors and Eigenvalues
03 Mar Cross Product
03 Mar Dot Product
03 Mar Rank and Null space
28 Feb Inverse Matrix
28 Feb Determinant
28 Feb Linear Transformation
28 Feb Matrix
24 Feb 02. RNN, LSTM, GRU with Time Series Data
24 Feb 01. CNN MNIST
24 Feb 02. CI & CD in practice
24 Feb Automatically Set Environment
24 Feb 02. Embedding Interpret with Eigen
24 Feb 01. Transformer Insight
24 Feb 10. 2D CNN Case Study
24 Feb 09. BERT
24 Feb 08. Transformer
24 Feb 07. Attention
23 Feb Instance Segmentation
23 Feb Transformer-based Semantic Segmentation
23 Feb Semantic Segmentation
23 Feb Detection Transformer (DETR)
23 Feb YOLO & SSD
23 Feb R-CNN
22 Feb Video Transformers
22 Feb Vision Transformer
22 Feb Video Representation & Fusion
10 Feb Batch Normalization
10 Feb Optimization
10 Feb Regularization
10 Feb Learning Rate
10 Feb Weight Initialization
10 Feb Data Preprocessing and Augmentation
10 Feb Activation Functions
10 Feb Convolution
09 Feb 01. Continuous Integration(CI) & Continuous Deployment(CD)
09 Feb 06. Seq2Seq
09 Feb 05. Gated Recurrent Units (GRU)
09 Feb 04. Long Short Term Memory (LSTM)
09 Feb 03. Recurrent Neural Network
09 Feb 02. Convolutional Neural Network
09 Feb 01. Multi-layer Perceptrons
09 Feb Manifold Learning, MDS, and PCA
09 Feb K-Means
09 Feb Unsupervised Learning
09 Feb Support Vector Machines with Kernels
09 Feb Loss Function
09 Feb Support Vector Machine (SVM) — Soft Margin with Slack Variables
09 Feb Support Vector Machine (SVM)
09 Feb Backpropagation
09 Feb Softmax and Cross Entropy Loss
08 Feb Bagged Trees & Random Forests
08 Feb Bagging & Ensemble
08 Feb Bootstrapping
08 Feb Decision Trees
08 Feb Pruning of Decision Trees
08 Feb Decision Trees
07 Feb Regularization
07 Feb Overfitting
05 Feb Naive Bayes
05 Feb Evaluating Classification
05 Feb Logistic vs LDA
05 Feb Extension of Linear Discriminant Analysis
05 Feb Linear Discriminant Analysis
05 Feb Discriminant Analysis
05 Feb Bayes Classifier
05 Feb Extension of Logistic Regression
05 Feb Stochastic Gradient Descent
05 Feb Optimization and Gradient Descent
05 Feb MLE for Logistic Regression
05 Feb Logistic Regression
05 Feb Entry of Classification, Linear Regression vs Logistic Regression
04 Feb Feature Engineering
04 Feb Statistical Interpret for MLE
04 Feb Statistical Properties for Linear Regression
04 Feb MLE for Linear Regression
04 Feb MLE Example
04 Feb Likelihood and MLE
04 Feb Linear Regression
04 Feb Supervised Learning Process
04 Feb Entry of Machine Learning
04 Feb Model Evaluation
04 Feb Feature Selection
02 Feb Thresholding in Image Processing
02 Feb Statistical Measures Commonly Used in Computer Vision
02 Feb Relation of Convolution Sharping and Edge Detection
02 Feb Morphology Dilation and Erosion
02 Feb Morphology Insights
02 Feb Least Squares Method (LSM) Explained Step by Step with Examples
02 Feb Image File Formats
02 Feb Image Array Layout & Memory Structure
02 Feb Hough Transform
02 Feb Hough Line Transform with example
02 Feb Homography in Computer Vision (4-Point Solution and N-Point Least Squares)
02 Feb Convolution for Smoothing
02 Feb Convolution for Sharping and Edge Detection
02 Feb Convolution Insights
02 Feb Composing Convolution Kernels
02 Feb Comparison Operations in Image Processing
02 Feb Canny Edge Detector
02 Feb Bitwise Operations in Image Processing
02 Feb Bitmap Images in Computer Vision
02 Feb Arithmetic Operations in Image Processing - Part 1
02 Feb Transformations in Image Processing
01 Feb Why Squaring Image Intensities Can Reveal Patterns
01 Feb Why Noise Cancels Out in Regions: A Statistical View
01 Feb Why Region-Based Matching Beats Pixel-by-Pixel in Noisy Images
01 Feb Seeing by Regions: Why Grouping Pixels Makes Vision Easier
01 Feb Limits of Classical Pattern Match
01 Feb Interpolation
01 Feb Integral Image
01 Feb Why Downscaled Images Make Localization Easier (Even If Less Accurate)
01 Feb Why Pattern Matching Scores Cluster
28 Jan Memory - Virtual Memory & Paging
28 Jan Parallel - Thread
28 Jan Parallel - Race Condition
28 Jan Parallel - Process Synchronization
28 Jan Memory - Contiguous Memory Allocation
28 Jan Directory - Files
28 Jan CPU Scheduling - CPU Scheduling
27 Jan Process - Process Management in Operating Systems
27 Jan Basic - OS Structure
27 Jan Components - Secondary Storage
27 Jan Components - CPU Registers
27 Jan Miscellaneous - RAID
27 Jan Miscellaneous - Instruction Cycle, Pipeline, Interrupts, and ISA
27 Jan Miscellaneous - Instruction Structure & Addressing Modes
27 Jan Components - I/O Device
27 Jan Components - Control Unit
27 Jan Miscellaneous - Compiled And Interpreted Languages
26 Jan Memory - Memory Latency
26 Jan Components - RAM
26 Jan Memory - Memory Address Space & Cache
26 Jan Miscellaneous - Data Units, Binary, and Character Encoding
26 Jan Components - CPU
26 Jan Components - BUS

2025

18 Dec LeetCode 49. Group Anagrams
09 Dec LeetCode 21. Merge Two Sorted Lists
09 Dec LeetCode 20. Valid Parentheses
06 Dec LeetCode 03. Longest Substring Without Repeating Characters
04 Dec LeetCode 02. Add Two Numbers
03 Dec LeetCode 01. Two Sum
28 Nov How to use git.bash command?
27 Nov How to set up initalization to github io?

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