Advancement in technology has witnessed the application of artificial intelligence to detect and recognize human faces. 👩👩🦲👨🦰 This is accomplished using OpenCV, a Python library for computer vision and image processing. In the previous tutorials, we use OpenCV to process images and turn them into pencil drawings and cartoons. We will learn how to use … Read more
Building a project with Python is one of the ways to get exposed to the programming language as well as its third-party libraries that reduce the amount of code we have to write. For example, in our previous project tutorial on building a sketch-making app, we learned how to create a web application using the … Read more
Motion detection algorithms form an important part of a video surveillance system. It can also be coupled with many AI-based human presence and profiling systems. Many applications of motion detection algorithms may be thought of with substantive advantages in saving man-hours, efforts, and storage requirements, that is: Out of my sheer personal experience, which I … Read more
In this post, I will show you how you can display a video file in Python – with and without OpenCV. I will also explain the codes and show you step by step. What is Opencv? OpenCV is one of the most widely used open-source libraries for computer vision tasks such as image processing, object … Read more
Summary: You can combine images represented in the form of Numpy arrays using the concatenate function of the Numpy library as np.concatenate((numpydata_1, numpydata_2), axis=1). This combines the images horizontally. Use syntax: np.concatenate((numpydata_1, numpydata_2), axis=0) to combine the images vertically. Problem Formulation Consider you have two images represented as Numpy arrays of pixels. How will you … Read more
Problem Formulation Given an image, how to get the size of the image with PIL or any other Python library? Getting the size of an image with Python PIL(Python Image Library) basically implies that you want to get its height and width in pixels. Example: Consider the following image: 🔥Challenge: Get the size of the … Read more
OpenCV is a framework for image processing and image recognition—among other things. It’s a super powerful tool in your data science and machine learning toolbelt! But how to install it in your PyCharm environment? This article will show you how! Problem Formulation: Given a PyCharm project. How to install the OpenCV library in your project … Read more
Problem Formulation Given an image stored at image.jpeg, a target width and height in pixels, and a target starting point (upper-left) x and y in the coordinate system. How to crop the given image in Python OpenCV so that the resulting image has width * height size? Here’s an example of how the original image … Read more
Hwei Geok NgHi! I’m Hwei, a data scientist based in Germany. I help founders and businesses deliver high-quality AI/ML/DS projects and content. Whether it’s use case assessment, data processing, model optimization, or article writing, I’m happy to collaborate!
This tutorial is an introduction to the OpenCV library. Learn how to convert color channels, resize, blend, blur, and threshold images in Python. The OpenCV [1] library contains most of the functions we need for working with images. Handling images in programming requires a different intuition than handling text data. An image is made up … Read more