Author Archive | Adrian Rosebrock

Implementing RootSIFT in Python and OpenCV

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 the original implementation. Instead, you should be utilizing a simple extension to SIFT, called RootSIFT, that can […]

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Convert URL to image with Python and OpenCV

Today’s blog post comes directly from my own personal repository of utility functions. Over the past month I’ve gotten a handful of PyImageSearch readers emailing in and asking how to download an image from a URL and then convert it to OpenCV format (without writing it to disk and then reading it back) — and […]

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