Tag Archives | python 2.7

Raspbian Stretch: Install OpenCV 3 + Python on your Raspberry Pi

It’s been over two years since the release of Raspbian Jessie. As of August 17th, 2017, the Raspberry Pi foundation has officially released the successor to Raspbian Jessie — Raspbian Stretch. Just as I have done in previous blog posts, I’ll be demonstrating how to install OpenCV 3 with Python bindings on Raspbian Stretch. If you […]

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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 everyone’s mind is: “Should I switch to OpenCV 3? If so, when should I switch?” Deciding when or even if you should switch […]

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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. So how do you ensure that your code will work no matter which version of OpenCV your production environment is using? Well, the […]

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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 included in the OpenCV 3 library by default. Unfortunately, you probably learned this lesson the hard way by opening up a terminal, […]

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