Milwaukee Air Show
Photos from the 2018 Milwaukee air and water show
Troubleshooting Raspberry Pi Headless Wifi Config
There are several models of Raspberry Pi with built-in wireless support. They
can be configured to connect to a wireless network before powering on, by
creating a file named wpa_supplicant.conf in the boot partition of your SD
card.
If you have your card properly configured, but the Pi won't …
Markdown Tables in Sphinx
Sphinx is a really useful tool, but one shortcoming is its markdown support. Specifically, it uses the recommonmark specification, which does not support tables. I wrote a Sphinx extension to render tables authored in markdown.
It can be installed via pip install sphinx-markdown-tables.
If you don't already have Sphinx configured …
Cyphercon 2018
I gave a talk on Steganography at Cyphercon 3.0. I want to give thanks to the organizers who put everything together. It was a blast - really fun conference with a lot of things to see, cool demos, and gadgets to try out.
The slides from my talk are available …
Tips for drone video - camera settings
Drones can get great aerial photos and video, but they're only as good as the person piloting them. In the right hands, a phone camera can get fantastic shots, and all the equipment in the world won't help if you don't know how to use it.
The first time you …
What I learned in 2017
Here are some things I learned in 2017, a summary of what I worked on the last year, and what I hope to accomplish in 2018.
A lot of them are things that have been said before. I think they bear repeating partially thanks to the lucky 10,000 effect …
DIL - Drone Imaging Language
I work a lot with drone data. Two common tasks are stitching 360 degee panoramas and detecting objects in an image.
Both of those are technically complicated - panorama stitching involves feature point detection, correlation, determining homographies, seam carving, and more.
Object detection is a whole field of research unto itself …
What is Bootstrap?
Maybe you're heard of Bootstrap, but don't know exactly what it is, or how to use it? The landing page description is less than helpful:
Build responsive, mobile-first projects on the web with the world's most popular front-end component library. Bootstrap is an open source toolkit for developing with HTML …
Django at Milwaukee Python
On Wednesday night, the Milwaukee Python group met up to discuss Django. The meeting was hosted by Digital Measures in Milwaukee's third ward. We had a great turnout and lots of good questions.
Andrew Glassman and I both spoke on Django, its features, and how to use it. The notes …
Detecting circles in an image with Hough transforms
Part of a series of examples from the CV cheat sheet. Click here for other computer vision applications.
Detecting circles in an image is a common task in computer vision. One way to do this is with the Hough (pronounced "Huff") transform. The math behind it is beyond the scope …
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