Tag Archives | opencv

Text skew correction with OpenCV and Python

Today’s tutorial is a Python implementation of my favorite blog post by Félix Abecassis on the process of text skew correction (i.e., “deskewing text”) using OpenCV and image processing functions. Given an image containing a rotated block of text at an unknown angle, we need to correct the text skew by: Detecting the block of text in the […]

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OpenCV: Resolving NoneType errors

Each week I receive and respond to at least 2-3 emails and 3-4 blog post comments regarding NoneType  errors in OpenCV and Python. For beginners, these errors can be hard to diagnose — by definition they aren’t very informative. Since this question is getting asked so often I decided to dedicate an entire blog post […]

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Raspbian + OpenCV pre-configured and pre-installed.

Ever since I wrote the first PyImageSearch tutorial on installing OpenCV + Python on the Raspberry Pi B+ back in February 2015 it has been my dream to offer a downloadable, pre-configured Raspbian .img file with OpenCV pre-installed. Today this dream has become a reality. I am pleased to announce that both the Quickstart Bundle and Hardcopy […]

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OpenCV with Tkinter

I’ll be honest with you. I’m not much of a GUI developer. Never was one, never will be. I enjoy creating the occasional user interface with HTML + CSS, or hacking up a WordPress plugin to make it more aesthetically pleasing — but writing full-fledged GUIs was never something I enjoyed. That said, I do try […]

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