Tutorials

In this tutorial, you will learn how to perform AprilTag detection with Python and the OpenCV library. AprilTags are a type of fiducial marker. Fiducials, or more simply “markers,” are reference objects that are placed in the field of view…

In this tutorial, you will learn how to perform targeted adversarial attacks and construct targeted adversarial images using Keras, TensorFlow, and Deep Learning. Last week’s tutorial covered untargeted adversarial learning, which is the process of: Step #1: Accepting an input…

In this tutorial, you will learn how to break deep learning models using image-based adversarial attacks. We will implement our adversarial attacks using the Keras and TensorFlow deep learning libraries. Imagine it’s twenty years from now. Nearly all cars and…

In this tutorial, you will learn how to train a custom multi-class object detector using bounding box regression with the Keras and TensorFlow deep learning libraries. Last week’s tutorial covered how to train single-class object detector using bounding box regression.…

In this tutorial you will learn how to train a custom deep learning model to perform object detection via bounding box regression with Keras and TensorFlow. Today’s tutorial is inspired by a message I received from PyImageSearch reader Kyle: Hi…

In this tutorial, you will learn how to perform image segmentation with Mask R-CNN, GrabCut, and OpenCV. A couple months ago, you learned how to use the GrabCut algorithm to segment foreground objects from the background. GrabCut worked fairly well…

In this tutorial, you will build a basic Automatic License/Number Plate Recognition (ANPR) system using OpenCV and Python. ANPR is one of the most requested topics here on the PyImageSearch blog. I’ve covered it in detail inside the PyImageSearch Gurus…

In this tutorial, you will learn how to use the EasyOCR package to easily perform Optical Character Recognition and text detection with Python. EasyOCR, as the name suggests, is a Python package that allows computer vision developers to effortlessly perform…

In this tutorial, you will learn how to OCR a document, form, or invoice using Tesseract, OpenCV, and Python. Last week, we discussed how to accept an input image and align it to a template image, such as the following:…