Tutorials

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 to…

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 by moving over to the…

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 (yep, I’ve been tweeting a…

Wow, last week’s blog post on building a basic motion detection system was awesome. It was a lot of fun to write and the feedback I got from readers like yourself made it well worth the effort to put together.…

Last updated on July 8, 2021. That son of a bitch. I knew he took my last beer. These are words a man should never, ever have to say. But I muttered them to myself in an exasperated sigh of…

So you’ve just built your first awesome computer vision app. Maybe it can detect faces in images. Or maybe your app can recognize prescription pills in photos. Or maybe your computer vision app can identify the covers of top selling…

I’m going to start this post by clueing you in on a piece of personal history that very few people know about me: as a kid in early high school, I used to spend nearly every single Saturday at the…

Alright, so at this point you have been exposed to contours pretty heavily on the PyImageSearch blog. We used contours to build a kick-ass mobile document scanner. Contours enabled us detect barcodes in images. And we even leveraged the power…

Still using the original, plain ole’ implementation of SIFT by David Lowe? Well, according to Arandjelovic and Zisserman in their 2012 paper, Three things everyone should know to improve object retrieval, you’re selling yourself (and your accuracy) short by using…