ioctl.eu

max grosse

2011-03-24 11:09
boost::asio provides a very convenient way of using SSL sockets. However, the information about the peer certificate provided is rather limited (read: non-existant) and there is only the option to either accept trusted certificates, or accept any certificate.

If ...

2011-03-16 14:27
OpenAL is a very powerful library for audio playback and recording. However, I just needed a minimal example on how to play a simple sine wave of a given frequency, synthesized by myself. This is basically quite easy using OpenAL ...
2011-03-10 10:34
I started to hack a very minimal SOCKS5 server in python using the twisted framework. Apparently, TCP/CONNECT works just fine, and that's all I wanted (BIND, UDP, Authentication are missing). This is the first time I did anything ...
2010-08-16 13:34
Hartley and Zisserman describe the homography calculation (or estimation) very well in their wonderful book "Multiple View Geometry in Computer Vision". However, they suggest solving the equation system by using a singular value decomposition (SVD). Another possible solution is to ...
2010-06-06 17:18
For an assignment, I had to create a short stop-motion movie. Before starting to search for good software to aid the process of taking something like 600 photos, I decided to write a simple application by myself. Actually, I wanted ...
2010-03-06 21:17
As mentioned in the previous post, I have been working on a userspace driver for UVC cameras under MacOS X.

As the basic functionality for my camera is there, I have decided to release the code to the public. Feel ...

2010-02-02 14:10
I now have this nice and cheap webcam, so I can work and try things out even when I am at home. The package said something like "UVC". That's Universal Video Class, a specific protocol atop of USB which ...
2009-05-13 16:34

Homographies are really useful. Often I need to take pictures of a projection onto a surface and usually this results in some perspective distortion. Using cvFindHomography, giving 'control points', a homography can be calculated and then the image can be ...
2009-05-05 00:12
Inverting an image in OpenCV is quite easy. No need to mess around with pointers. Actually, it can be done in a single line, with a single instruction:

1 cvXorS(input, cvScalar(255), output)