A few tricks I learned using ctypes to wrap OpenCV.
A press release from the Rett Syndrome Research Foundation announces results of a landmark study reversing the symptoms of Rett Syndrome (RTT) in a genetic mouse model . Wow!
Switch access to technology: A comprehensive guide by David Colven and Simon Judge is an excellent overview of the issues around using switches to control computers and other devices.
Starting from the work of
, I have hacked together the beginnings of a
-based wrapper for
. You may download the
code and examples
code and examples from
UNC Python Tools
If there is enough interest I'll move it to sourceforge.
I can reliably detect many simple targets and generate key events in real time using a web-cam and an ordinary piece of paper with printed targets. What are the important characteristics of the targets?
- They must be meaningful to the user.
- They must be detectable and easily distinguished from whatever will obscure them by the computer.
- They must have an associated key, mouse or other event to control the computer.
This page describes a little utility I wrote for my own use. If you want to use it, you can download it and its source. I don’t provide support but if you would like to report bugs you’ve found or changes you’ve made to it, I’d be happy to hear about it.
Kelly's engineer estimates beam thickness as 1/2 inch per foot of span.
I finally used the copy Camtasia Studio I bought to make a couple of short videos demonstrating computer vision methods. After setting the encoders up properly I got fine looking video and good audio in a 1 megabyte download.
For my video switch I want to be able to synthesize key events that look like they originated from the keyboard. The function SendInput in the user32.dll looks like the right low-level goods but Pete points out that the WScript.Shell has a SendKeys method that is easier to use. The Python code looks like:
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