Rico's Nerd Cluster

「离开世界之前 一切都是过程」

Autonomous Vehicle Introduction

General Project Flow What the robot sees - Perception localization + mapping Navigation - Motion Planning Planning + control Autonomy Levels from SAE (Society of Automotive Engineers) ...

Docker Image Building

Dockerfile, Image Management

Construct Of An Docker Image And Its Building Process A Docker image is like a box of Oreo. Its final image is like multiple Oreos (layer) stacked on top of each other. A layer could be built from...

Computation Tools - Eigen Expression Templates and SIMD

Fused Computation

Eigen Expression Template. Optimization Impact: ⭐️⭐⭐️️⚪⚪ Expression templates are one of those “powerful but mysterious” C++ features that libraries like Eigen, Blaze, and even TensorFlow (C++) us...

Computation Tools - OpenCV, PCL, PCD, NanoFLANN

A Running List of Computer Vision Tools

OpenCV Image Processing cv::Mat Create a cv::Mat In C++: 1 2 3 4 5 6 7 8 // method 1 cv::Mat(another_mat); // method 2 cv::Mat A = (cv::Mat_<uchar>(1,2)<<1,2); //CV_8U // method ...

Virtual Network Computing (VNC)

Graphical Desktop Environment

What is vncviewer vncviewer (virtual network computing) client allows one to interact with a remote computer’s graphical desktop environment. It’s run inside the docker. vncviewer Setup File Dir...

Things About Leetcode Before That Coding Interview

Leetcode IDE Tips, Common Leetcode Problems, C++ Commands, String

Introduction At the bare minimum, it’s good to have a solid understanding of 2 Pointers, sliding window, BFS/DFS, Trees, Graphs, Stacks, Queus, Hash Maps. Leetcode IDE Tips No Global Variables ...

Foundamental Structure of Programs

Callstack

Callstack A callstack is a stack of frames, where a frame represents an active call. Each frame has: return address (where the function returns after it completes), local variables. E.g., if func...

C++ - Rounding

llround llround follows round half away from zero (not bankers rounding)., and returns long long 1 2 3 4 5 6 7 std::llround(2.3) → 2 std::llround(2.5) → 3 std::llround(2.7) → 3 std::llr...

Robotics - [2D SLAM 1] Hands-On Mapping

Point-Point ICP, Point-Line ICP

🧪 Loop Detection Testing Procedure Phase 1: Baseline Verification (No Loop Closure) Objective: Confirm that submaps are constructed correctly before enabling loop closure. Steps: Disable loo...

C++ - Specifiers

Declaration-Only Specifiers

Declaration Only Specifiers These specifiers will only appear in an .hpp file, not in .cpp files. Keyword What it does virtual Marks a member as p...