In a previous PyImageSearch blog post, I detailed how to compare two images with Python using the Structural Similarity Index (SSIM). Using this method, we were able to easily determine if two images were identical or had differences due to slight image manipulations, compression artifacts, or purposeful tampering. Today we are going to extend the […]
PyImageSearch Gurus member spotlight: Saideep Talari
In today’s blog post, I interview Saideep Talari, a PyImageSearch Gurus graduate who was recently hired as a computer vision engineer at a startup in India. Saideep’s story holds a special place in my heart as it’s so incredibly sincere, genuine, and heartfelt. You see, Saideep comes from a very low income Indian family. They did not have much money. In […]
Computing image “colorfulness” with OpenCV and Python
Today’s blog post is inspired by a question I received from a PyImageSearch reader on Twitter, @makingyouthink. Paraphrasing the tweets myself and @makingyouthink exchanged, the question was: Have you ever seen a Python implementation of Measuring colourfulness in natural images (Hasler and Süsstrunk, 2003)? I would like to use it as an image/produce search engine. […]
Montages with OpenCV
Today’s blog post is inspired by an email I received from PyImageSearch reader, Brian. Brian asks: Hi Adrian, I’m really enjoying the PyImageSearch blog. I found your site a few days ago and I’ve been hooked on your tutorials ever since. I followed your tutorial on building an image search engine, but instead of displaying […]
Face Alignment with OpenCV and Python
Continuing our series of blog posts on facial landmarks, today we are going to discuss face alignment, the process of: Identifying the geometric structure of faces in digital images. Attempting to obtain a canonical alignment of the face based on translation, scale, and rotation. There are many forms of face alignment. Some methods try to […]
Resolving macOS, OpenCV, and Homebrew install errors
As you undoubtedly know, configuring and installing OpenCV on your macOS machine can be a bit of a pain. To help you and other PyImageSearch readers get OpenCV installed faster (and with less headaches), I put together a tutorial on using Homebrew to install OpenCV. Using Homebrew allows you to skip manually configuring your build and […]
Drowsiness detection with OpenCV
My Uncle John is a long haul tractor trailer truck driver. For each new assignment, he picks his load up from a local company early in the morning and then sets off on a lengthy, enduring cross-country trek across the United States that takes him days to complete. John is a nice, outgoing guy, who carries a […]
Install dlib on the Raspberry Pi
A few weeks ago I did a blog post on how to install the dlib library on Ubuntu and macOS. Since Raspbian, the operating system that (most) Raspberry Pi users run is Debian-based (as is Ubuntu), the same install instructions can be used for Raspbian as Ubuntu… …however, there’s a catch. The Raspberry Pi 3 ships […]
Eye blink detection with OpenCV, Python, and dlib
In last week’s blog post, I demonstrated how to perform facial landmark detection in real-time in video streams. Today, we are going to build upon this knowledge and develop a computer vision application that is capable of detecting and counting blinks in video streams using facial landmarks and OpenCV. To build our blink detector, we’ll be […]
Real-time facial landmark detection with OpenCV, Python, and dlib
Over the past few weeks we have been discussing facial landmarks and the role they play in computer vision and image processing. We’ve started off by learning how to detect facial landmarks in an image. We then discovered how to label and annotate each of the facial regions, such as eyes, eyebrows, nose, mouth, and jawline. Today […]