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OpenCV 3.0 released — and the coming changes to the PyImageSearch blog.
It’s been a long time coming, but OpenCV 3.0 has finally been released! This update is definitely one of the most extensive overhauls to the library in recent years, and boasts increased stability,...
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Install OpenCV 3.0 and Python 2.7+ on OSX
As I mentioned last week, OpenCV 3.0 is finally here! And if you’ve been paying attention to my Twitter stream, you may have noticed a bunch of tweets regarding installing OpenCV on OSX and Ubuntu...
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Install OpenCV 3.0 and Python 2.7+ on Ubuntu
Last week we kicked-off the OpenCV 3.0 install fest by detailing how to install OpenCV 3.0 and Python 2.7+ on the OSX platform. Today we are going to continue the OpenCV 3.0 install instruction series...
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Install OpenCV 3.0 and Python 3.4+ on OSX
Two weeks ago we kicked off the OpenCV 3.0 install-fest with a tutorial on how to install OpenCV 3.0 and Python 2.7 on OSX. Today I’m back again with another OSX tutorial — only this time we are going...
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Where did SIFT and SURF go in OpenCV 3?
If you’ve had a chance to play around with OpenCV 3 (and do a lot of work with keypoint detectors and feature descriptors) you may have noticed that the SIFT and SURF implementations are no longer...
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Install OpenCV 3.0 and Python 3.4+ on Ubuntu
A couple weeks ago I provided step-by-step install instructions to setup OpenCV 3.0 and Python 2.7+ on your Ubuntu machine. However, one of the huge benefits of migrating to OpenCV 3.0 is the new...
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Installing OpenCV 3.0 for both Python 2.7 and Python 3+ on your Raspberry Pi 2
Honestly, I love the Raspberry Pi for teaching computer vision — it is perhaps one of the best teaching tools to expose programmers, developers, and students to the world of computer vision. It’s...
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Checking your OpenCV version using Python
It was unavoidable — the OpenCV 3 release was bound to break backwards compatibility with some OpenCV 2.4.X functions: cv2.findContours and cv2.normalize come to mind right off the top of my head....
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How to install OpenCV 3 on Raspbian Jessie
A few weeks ago Raspbian Jessie was released, bringing in a ton of new, great features. However, the update to Jessie also broke the previous OpenCV + Python install instructions for Raspbian Wheezy:...
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OpenCV 3 adoption rate
As we all know, OpenCV 3.0 was officially released back in June of 2015. This new update incorporated a ton of new features and optimizations, including Python 3 bindings. But the big question on...
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Installing OpenCV on your Raspberry Pi Zero
In this blog post I’ll demonstrate how to install OpenCV 3 on the Raspberry Pi Zero. Since I’ve covered how to install OpenCV on the Raspberry Pi in multiple, previous blog posts, I’ll keep this post...
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OpenCV panorama stitching
In today’s blog post, I’ll demonstrate how to perform image stitching and panorama construction using Python and OpenCV. Given two images, we’ll “stitch” them together to create a simple panorama, as...
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Real-time panorama and image stitching with OpenCV
One of my favorite parts of running the PyImageSearch blog is a being able to link together previous blog posts and create a solution to a particular problem — in this case, real-time panorama and...
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OpenCV center of contour
Today, we are going to start a new 3-part series of tutorials on shape detection and analysis. Throughout this series, we’ll learn how to: Compute the center of a contour/shape region. Recognize...
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OpenCV shape detection
This tutorial is the second post in our three part series on shape detection and analysis. Last week we learned how to compute the center of a contour using OpenCV. Today, we are going to leverage...
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Determining object color with OpenCV
This is the final post in our three part series on shape detection and analysis. Previously, we learned how to: Compute the center of a contour Perform shape detection & identification Today we...
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Writing to video with OpenCV
Let me just start this blog post by saying that writing to video with OpenCV can be a huge pain in the ass. My intention with this tutorial is to help you get started writing videos to file with...
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Saving key event video clips with OpenCV
Last week’s blog post taught us how to write videos to file using OpenCV and Python. This is a great skill to have, but it also raises the question: How do I write video clips containing interesting...
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Install guide: Raspberry Pi 3 + Raspbian Jessie + OpenCV 3
Can you believe it’s been over four years since the original Raspberry Pi model B was released? Back then the Pi Model B shipped with only 256MB of RAM and a 700MHz single core processor. Just over...
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Watermarking images with OpenCV and Python
A few weeks ago, I wrote a blog post on creating transparent overlays with OpenCV. This post was meant to be a gentle introduction to a neat little trick you can use to improve the aesthetics of your...
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