HalfdanJ » tracking

Frost

Jonas Jongejan — Thu, 01 Oct 2009 12:19:22 +0000

Fall 2009, Danish Dance Theatre, Hippodromen
Dance performance made together with Danish Dance Theatre, Tina Tarpgaard (choreographer), and Ole Kristensen. All the software that generated the scenographics with one projector, was created by me and Ole in approx. 1 month in OpenFrameworks.

The piece is going to be setup again next fall at dansehallerne in copenhagen, and afterwards on a tour.

Elektronisk Transcendens

Jonas Jongejan — Tue, 07 Jul 2009 20:37:03 +0000

Spring 2009, Holmen Event, Copenhagen

This is a project i developed in two weeks together with two friends from the royal school of architecture in copenhagen for a big event that a group of schools held called Holmen Event. We wanted to make a big interactive wall that the audience could play with. It ended up being a photowall, where a empty canvas (beutifully cut out with a lasercutter), could take photos that the audience choosed, and afterwards used to hang the photo on the wall next to all the others.

The canvas was tracked by a camera in the roof when holding it in the light, and when my program saw that it was stable in the frame, a photo was taken inside the square that the canvas formed. At the same time a sound was triggered, and the whole sound universe (designed by my friend Rasmus Kreiner, a theater sound designer) changed.
Afterwards the audience could hold the canvas against the 4x8m big backprojected wall, where a infrared camera behind could track where it was, and how it was rotated. And again, when my program saw it was not moving, it attached the photo to the wall, where it moved in a physics simulator (pushing to other photos) and slowly moving upwards before it was deleted again.

The software is developed in OpenFrameworks, using alot of OpenCV code. The tracking of the canvas on the wall was done with tBeta.

The installation ran for 7 hours during the party, and there was taken more then 500 pictures, and the audience really liked it. People understood the concenpt (even drunk) right away, and told it to each other when passing by. Many came back later and took some more photos

TimeMap Lab

Jonas Jongejan — Tue, 27 Jan 2009 21:48:26 +0000

The last 2 weeks i have been working with Ole Kristensen on developing tools for the next dance performance by Ole and Tina Tarpgaard (the same persons as Body Navigation). The main tool we have been programming is a interactive physics simulation of letters falling down when something (here a dancer) touches it, or in other ways react in physical simulated way. We have been coding in OpenFrameworks (C++), and used the open-source physics engine Bullet to build up our code, and used some standard OpenCV blob tracking to detect a person on a stage.

We have also been working on making a new blob library that is not a perfect match around a body, but instead like a bubble with a person inside. It can give some really nice organic effect when the forces are very low in the bobble, and it just follows slowly the movement of the body. This is build by me with some basic physics laws.

For now we got this video of it, but we will cut something better later

Stop Motion @ New Media Meeting

Jonas Jongejan — Sat, 20 Sep 2008 00:16:46 +0000

Ole and I where invited to New Media Meeting 03, a annual media and art festival held in Norrköping in Sweden, with our installation Stop Motion that we originally made for a big LED screen in Copenhagen. This time we projected it on a big wall outside the main stage of the festival. We decides to rewrite our code, this time in OpenFrameworks, since we had seen a major performance boost in C++. And we decided to try remote trigger a DSLR camera when we took pictures, but this gave us some pretty big problems, since the standards aren’t very well incorporated in the cameras we used. But we got it to work in the end.