Apr 12, 2022Member-onlyTesseract Character recognition without training modelUsing Tesseract recognize character without training our own models — Background Today, with the vast improvements in machine learning, character extraction and recognition from images is much simpler than before, thanks to well developed deep learning algorithms such as CNN, LSTM, etc. Before the advent of these sophisticated machine learning algorithms, one had to use template matching to match every character…Tesseract10 min readTesseract10 min read
Mar 27, 2022Member-onlyDetect Low Obstacles using Tilted 2D LidarUse cheap 2D lidar to detect obstacles and potholes. It saves your budgets — Background In the robotics world, we normally use 2D lidar or 3D lidar to detect the obstacles as the perception sensors. Although using the camera with the deep learning model has developed very fast in recent years and it’s able to detect different objects, lidar is more convenient and “simpler” to…Robotics6 min readRobotics6 min read
Published in Geek Culture·Mar 1, 2022Member-onlyHow variables are saved in Python and Rust. Side by Side 7: dict/HashMapSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 7th article about dict/HashMap. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how dict / HashMap works in both. dict / HashMap is playing a huge role in…Python12 min readPython12 min read
Published in Geek Culture·Nov 23, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 6: tupleSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 6th article about tuple. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how tuple works in both. In addition, I am not comparing which language is better. They…Python6 min readPython6 min read
Published in Geek Culture·Nov 16, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 5: list/arraySeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 5th article about list/array. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how list/array works in both. In addition, I am not comparing which language is better. They…Python7 min readPython7 min read
Published in Geek Culture·Nov 15, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 4: str/stringSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 4th article about str/string. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how str/string works in both. In addition, I am not comparing which language is better. They…Python8 min readPython8 min read
Published in Geek Culture·Nov 6, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 3: boolSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 3rd article about bool. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how bool works in both. In addition, I am not comparing which language is better. They…Python5 min readPython5 min read
Published in Geek Culture·Nov 5, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 2: int / longSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is the 2nd article about int/long. — Background In this series of articles, I will show how variables work in Python and Rust side by side such that we could have a better understanding of both. In this article, we will check how int works in both. In addition, I am not comparing which language is better. They…Python5 min readPython5 min read
Published in Geek Culture·Nov 4, 2021Member-onlyHow variables are saved in Python and Rust. Side by Side 1: floatSeries article to show how variables work in Python and Rust. Give us a better understanding of both languages. This is 1st article about float. — Background I have been a Python programmer around 10 years ago and started learning and using Rust a while ago. When learning Rust, the 1st thing which we are thinking about is how the data is saved in memory. When using Python, mostly we didn’t really care how the data works…Python5 min readPython5 min read
Published in Geek Culture·Sep 28, 2021Member-onlyLivox PTP time sync on Raspberry Pi 4How to sync Livox time when the computer doesn’t support hardware timestamp. — Background Nowadays, we could see a lot of robots are running next to us and many self-driving cars are under development. The main tech underneath is the Lidar detection and high-definition maps built by Lidar. Normally, the small robots are using 2D Lidar like RPLidar to capture the information from a…Livox5 min readLivox5 min read
