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First Contribution to Open Source Software

03/26/2012

Up until now, all my contributions to open source have been programs I have written, and as a general practice I like to make all my work open source if I can. However, its a nice feeling to have some code I wrote incorporated into someone else’s project for a change.

The program in question here is called OpenTLD. Its a program for tracking objects (not just faces) in unconstrained video streams with NO training data beforehand (TLD stands for Tracking, Learning and Detection). Instead of using precomputed classifiers (like I previously have done with OpenCV), OpenTLD builds a model of what it is supposed to be detecting on the fly. To demonstrate, above is a slightly creepy demo of OpenTLD tracking my face.

The version of OpenTLD here is actually the C++ implementation of OpenTLD. OpenTLD began life as a bunch of Matlab programs written as part of Zdenek Kalal’s PHD thesis. Here is a more advanced video by him talking / showing off OpenTLD (he calls it Predator).

But so yeah! I actually contributed to this! Even though the code I wrote is trivial (it had to do with the bounding box when you first start the program), it still makes me really excited. I plan on taking a closer look at the codebase sometime later and trying to learn how it works. Up until now all my contributions to open source have been programs I have written. It feels really cool to have a change I made rolled into this super advanced computer vision program!

Tags: Computer vision | C++

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Lucas DoyleWritten by Lucas Doyle, a robotics engineer who does a lot of web development in San Francisco.