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Paul(admin)
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First experimental results

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Wednesday, July 2 2008, 17:02
I've been doing some post-processing on the data I captured from several test subjects for my experimentation project. Each subject was put in the motion capture lab, where they simulated some movements that mimic "dynamic peephole" navigation. The idea here is to be able to navigate large amounts of data on a device simply by moving it around in space, instead of having to interact with it in the conventional manner (i.e. pressing keys or touching the screen).
Here is a large resolution sample video I made of all the data playing simultaneously. On the top left you can see the video stream recorded by the phone. On the top right are the motion capturing markers as recorded by Vicon iQ. Finally, the graph indicates the three axis data output of the phone's accelerometer, where red line is the x-axis, green line is the y-axis and blue line is z-axis.
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Wisse (guest)
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Thursday, July 3 2008, 11:39
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Is dat Annemieke?
Het lijkt best goed te werken trouwens! Het gezicht is constant te zien (of liet je dat haar express doen?) En de assen lijken toch iets meer informatie door te geven dan je dacht? Of ben ik daar de leek voor en snap ik het niet? (a)
Succes met verwerken!
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Paul (admin)
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Friday, July 4 2008, 0:12
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Ja, dat is Annemieke! Charmant, hè, met dat brilletje op? :)
Ze kon zichzelf trouwens niet zien; dat in een later experiment wel, waarna ze centraler in beeld bleef, interessant genoeg.
Nou, van de accelerometer valt mijns inziens alleen de z-as te gebruiken gezien de gebruiker het toestel kantelt. Horizontale versnellingen zijn tussen de ruis nauwelijks waar te nemen tenzij dat met grof geweld gebeurt. Daarnaast is het beeldkwaliteit niet fantastisch; de ernstige artifacten in de video hierboven zijn niet door de compressie van deze site, maar oorspronkelijk van de camera zelf, helaas.
Wellicht valt hier nog wat aan te sleutelen, maar ik ben ook maar pas begonnen met ontwikkelen van software voor Symbian.
Ik ben nog op zoek naar proefpersonen, dus je bent van harte welkom in het lab!
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Wisse (guest)
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Sunday, July 20 2008, 13:02
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That is very interesting, what you just said rararbol and labingda... Seems your spam filter is getting cracks again ;)
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Paul (admin)
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Sunday, July 20 2008, 14:12
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Thanks for the heads up! I had already noticed it myself (I'm getting contact form spam as well).
It's all related to the recent move to a new server. I had forgotten to set up the file permissions correctly, but it should be fixed now. We'll soon find out!
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