Tag Archive: tracking

Mar 16

Bootstrapping planar AR and tracking without markers [w/code]

Years ago I wanted to implement PTAM. I was young and na├»ve Well I got a few moments to spare on a recent sleepless night, and I set out to implement the basic bootstrapping step of initializing a map with a planar object - no known markers needed, and then tracking it for augmented reality …

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Feb 07

Simplest 20-lines OpenCV video stabilizer [w/ code]

A simple and short video stabilizer with OpenCV.

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May 26

Extending the hand tracker with snakes and optimizations [w/ code, OpenCV]

output-comp

Continuing the work on a hand curve particle filter following Heap&Hogg's work, adding active contours and optimizations

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Mar 16

Curve tracking with a Heap&Hogg's Particle Filters [w/ code, OpenCV]

Screen Shot 2013-03-15 at 6.18.30 PM

I wanna share some code for 2D curve tracking with a particle filter, implementing the body of work of Tony Heap and David Hogg. These guys presented a relatively easy to implement method for tracking deformable curves through space and change in form using a Hierarchical Point Distribution Models (HPDM), which is another elegant way …

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Jun 17

Simple Kalman filter for tracking using OpenCV 2.2 [w/ code]

kalman using velocity

Hi, I wanted to put up a quick note on how to use Kalman Filters in OpenCV 2.2 with the C++ API, because all I could find online was using the old C API. Plus the kalman.cpp example that ships with OpenCV is kind of crappy and really doesn't explain how to use the Kalman …

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