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CNN Building Blocks Neural networks accept an input image/feature vector (one input node for each entry) and transform it through a series of hidden layers, commonly using nonlinear activation functions. Each hidden layer is also made up of a set…
Read More of Convolutional Neural Networks (CNNs) and Layer Types
A common question I get asked is: Are Convolutional Neural Networks invariant to changes in translation, rotation, and scaling? Is that why they are such powerful image classifiers? To answer this question, we first need to discriminate between the individual…
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Revised and updated 4/10/2023 Table of Contents What Is Deep Learning? Topic Description A Brief Overview of Machine Learning The Basics of Neural Networks Deep Learning vs. Traditional Machine Learning Challenges and Limitations of Deep Learning Data Requirements Interpretability Overfitting…
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Based on our previous two sections on image classification and types of learning algorithms, you might be starting to feel a bit steamrolled with new terms, considerations, and what looks to be an insurmountable amount of variation in building an…
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Today’s blog post on reading barcodes and QR codes with OpenCV is inspired by a question I received from PyImageSearch reader, Hewitt: Hey Adrian, I really love the PyImageSearch blog. I look forward to your emails each week. Keep doing…
Read More of An OpenCV barcode and QR code scanner with ZBar
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,…
Read More of Raspbian Stretch: Install OpenCV 3 + Python on your Raspberry Pi
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 one year ago…
Read More of Install guide: Raspberry Pi 3 + Raspbian Jessie + OpenCV 3
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 on the shorter side…
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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: Install OpenCV 2.4 with Python 2.7 bindings…
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