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Today’s blog post is on image hashing — and it’s the hardest blog post I’ve ever had to write. Image hashing isn’t a particularly hard technique (in fact, it’s one of the easiest algorithms I’ve taught here on the PyImageSearch…
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When it comes to deep learning, Keras is my favorite Python library… …but a close runner up is mxnet. What I like about mxnet is that it combines the best of both worlds in terms of performance and ease of…
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Today’s blog post is inspired by a number of PyImageSearch readers who have commented on previous deep learning tutorials wanting to understand what exactly OpenCV’s blobFromImage function is doing under the hood. You see, to obtain (correct) predictions from deep…
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Keras is undoubtedly my favorite deep learning + Python framework, especially for image classification. I use Keras in production applications, in my personal deep learning projects, and here on the PyImageSearch blog. I’ve even based over two-thirds of my new…
Read More of How-To: Multi-GPU training with Keras, Python, and deep learning
Today’s blog post was inspired by PyImageSearch reader, Emmanuel. Emmanuel emailed me after last week’s tutorial on object detection with deep learning + OpenCV and asked: Hi Adrian, I really enjoyed last week’s blog post on object detection with deep…
Read More of Real-time object detection with deep learning and OpenCV
Last updated on July 7, 2021. A couple weeks ago we learned how to classify images using deep learning and OpenCV 3.3’s deep neural network (dnn ) module. While this original blog post demonstrated how we can categorize an image…
Read More of Object detection with deep learning and OpenCV
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,…
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Have you ever had to loop over an image pixel-by-pixel using Python and OpenCV? If so, you know that it’s a painfully slow operation even though images are internally represented by NumPy arrays. So why is this? Why are individual…
Read More of Fast, optimized ‘for’ pixel loops with OpenCV and Python
Two weeks ago OpenCV 3.3 was officially released, bringing with it a highly improved deep learning (dnn ) module. This module now supports a number of deep learning frameworks, including Caffe, TensorFlow, and Torch/PyTorch. Furthermore, this API for using pre-trained…
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