https://kcnote.github.io/Personal dev blog about C++, computer vision, algorithms, and AI 2026-06-10T14:18:02+08:00 Steve Cho https://kcnote.github.io/ Jekyll © 2026 Steve Cho /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-06-09T23:00:00+08:00 2026-06-09T23:00:00+08:00 https://kcnote.github.io/posts/AI-Pytorch-05-Image-Segmentation/ kang

Image Segmentation Prerequisites 1. Image Segmentation 1.1 Example Train Segmentation # ========================= # 1. Install # ========================= !pip install -q transformers datasets evaluate accelerate tqdm import torch import numpy as np import matplotlib.pyplot as plt from datasets import load_dataset from torch.utils.data import DataLoader from transformers import Segf...

2026-06-07T23:00:00+08:00 2026-06-07T23:00:00+08:00 https://kcnote.github.io/posts/AI-Pytorch-04-Object-Detection-YOLO/ kang

Object Detection YOLO Prerequisites 1. Object Detection YOLO 1.1 Example Convert Data for YOLO import shutil from pathlib import Path import pandas as pd from sklearn.model_selection import train_test_split from tqdm import tqdm ROOT_DIR = Path(__file__).resolve().parents[1] # ComputerVision RAW_DIR = ROOT_DIR / "data" / "gwhd_2021" IMAGE_DIR = RAW_DIR / "images" CSV_PATH = RAW_...

2026-06-04T23:00:00+08:00 2026-06-08T22:56:59+08:00 https://kcnote.github.io/posts/AI-Pytorch-03-Defect-Inspection/ kang

Defect Inspection Prerequisites 1. Defect Inspection 1.1 Example import os import glob import cv2 import torch import timm import numpy as np from PIL import Image from tqdm import tqdm from sklearn.metrics import roc_auc_score from torchvision import transforms DEVICE = "cuda" if torch.cuda.is_available() else "cpu" BASE_DIR = os.path.dirname(os.path.abspath(__file__)) DATA_ROOT =...

2026-06-02T23:00:00+08:00 2026-06-02T23:00:00+08:00 https://kcnote.github.io/posts/ROS-01-Publisher-and-Subscriber/ kang

Publisher and Subscriber Prerequisites 1. ROS2 1.1 Install wsl --install -d Ubuntu-24.04 sudo apt update sudo apt upgrade -y 1.2 Workspace sudo apt install ros-jazzy-desktop -y echo “source /opt/ros/jazzy/setup.bash” » ~/.bashrc

2026-05-25T23:00:00+08:00 2026-05-25T23:00:00+08:00 https://kcnote.github.io/posts/CODE-SIMD-02-Convolution-RGB-with-SIMD/ kang

Convolution RGB with SIMD Prerequisites SIMD 1. Naive Code About 5119 by 5119 image. Processing time: 305ms uint8_t* pU8SrcBuf = (uint8_t*)imgSrc.data; uint8_t* pU8DstBuf = (uint8_t*)imgDst.data; int32_t i32SteopRows = imgSrc.step; int32_t i32PixelBytes = imgSrc.elemSize(); for(int i32Row = 2; i32Row < imgSrc.rows - 2; ++i32Row) { uint8_t* pU8SrcBufRowR = pU8SrcBuf + i32Row *...