You can master Computer Vision, Deep Learning, and OpenCV - PyImageSearch
Tutorials
A few months ago, I wrote a tutorial on how to classify images using Convolutional Neural Networks (specifically, VGG16) pre-trained on the ImageNet dataset with Python and the Keras deep learning library. The pre-trained networks inside of Keras are capable…
Read More of ImageNet: VGGNet, ResNet, Inception, and Xception with Keras
Today’s tutorial is a Python implementation of my favorite blog post by Félix Abecassis on the process of text skew correction (i.e., “deskewing text”) using OpenCV and image processing functions. Given an image containing a rotated block of text at…
Read More of Text skew correction with OpenCV and Python
Today’s tutorial is inspired by a post I saw a few weeks back on /r/computervision asking how to recognize digits in an image containing a thermostat identical to the one at the top of this post. As Reddit users were…
Read More of Recognizing digits with OpenCV and Python
Have you ever worked with a video file via OpenCV’s cv2.VideoCapture function and found that reading frames just felt slow and sluggish? I’ve been there — and I know exactly how it feels. Your entire video processing pipeline crawls along,…
Read More of Faster video file FPS with cv2.VideoCapture and OpenCV
Easily one of my all-time favorite papers in computer vision literature is Seam Carving for Content-Aware Image Resizing by Avidan and Shamir from Mitsubishi Electric Research Labs (MERL). Originally published in the SIGGRAPH 2007 proceedings, I read this paper for…
Read More of Seam carving with OpenCV, Python, and scikit-image
In last week’s blog post I demonstrated how to count the number of frames in a video file. Today we are going to use this knowledge to help us with a computer vision and image processing task — visualizing movie…
Read More of Generating movie barcodes with OpenCV and Python
Today’s blog post is part of a two part series on working with video files using OpenCV and Python. The first part of this series will focus on a question emailed in by PyImageSearch reader, Alex. Alex asks: I need…
Read More of Count the total number of frames in a video with OpenCV and Python
Let me tell you an embarrassing story of how I wasted three weeks of research time during graduate school six years ago. It was the end of my second semester of coursework. I had taken all of my exams early…
Read More of Rotate images (correctly) with OpenCV and Python
Over the past few weeks I have demonstrated how to compile OpenCV 3 on macOS with Python (2.7, 3.5) bindings from source. Compiling OpenCV via source gives you complete and total control over which modules you want to build, how…
Read More of Install OpenCV 3 on macOS with Homebrew (the easy way)
Building a Pokedex