AA Inter 3


NATHAN – CALIBRATING REALITY by nathanssu
November 21, 2014, 7:26 pm
Filed under: 2013-14

I am so sorry for the late post – my videos took longer than expected to upload to vimeo.

I have attached links to two video files describing the work so far and showing where I am with testing. The concept is still to map a digital 3D design to a 3D physical ‘scaffolding’ model – a simplified test version is shown here (the AR is still a little bit jumpy but I hope this will be resolved when I put it in a controlled lighting condition). The ambition is to eventually model a small section of the Deucalion from my first drawing to populate with the Augmented layer.

VIDEO 1 – AR TESTING PROCESS – Click image for link

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VIDEO 2 – AR TESTING DEMO (EXPORTED FROM PROCESSING) – Click image for link

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The video also shows a short experimentation with transparent screens – I am using the Pepper’s Ghost effect (a digital screen at 45 degrees to a transparent reflective surface – in this case perspex) to create a transparent hologram illusion. The next step here (and potentially the hardest bit to come) will be to get the image on the screen to display as scaled and positioned correctly to really overlay reality behind – at the moment the webcam is not integrated with the screen. I imagine this calibration will involve getting the screen in the right position relative to both the viewer’s eyes and the webcam.

At the moment the 3D digital model responds in real time to a Rhino model imported to Processing through Grasshopper. This is allowing me to perform real time transformations to the geometry through Grasshopper. To work Arduino into the project, I plan to use Firefly to take environmental sensor data from Arduino (probably light levels at this stage) to control the geometry projected.

To tie the concept into my notion that land ownership might be temporally dynamic I also hope to make the calibration markers in my final model changeable – powered by Arduino servos. Depending on which calibration markers were shown would determine which digital model is loaded, and which sensor data to use in its manipulation. In my narrative, the idea would be that a person would own a set of calibration markers rather than the land they were placed on – thus allowing owners to design and inhabit their digital environments only during the times when their markers were displayed.

So, given the tests so far, this is my plan of action for next week – let me know what you think! (My approach is to get as many of the technicalities resolved early on – so that late next week and the week after I can really focus on getting the design right – for the digital and the physical models).

1. Develop Arduino sensor input into Grasshopper (using Firefly plugin?)

2. Develop Arduino servo control script for the calibration markers

3. Test the Pepper’s Ghost screen on a thinner piece of perspex or acetate – to remove the double image effect

4. Initial 3D model (in Rhino) of the final physical model

5. Initial 3D model (in Rhino) of the final digital model(s) – and the associated grasshopper variable controls

I’m having a lot of fun with this, but I am wary of getting carried away with the technical side of things! Please let me know if you have any concerns or advice.

Nathan

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1 Comment so far
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Hi Nathan,

Very exciting to see the progress and the dedication with the subject. Yes at the moment it is very technical, but also part of it is necessary to get some basic tools to talk to each other. One point that is important to consider related to the technical side is how many tools you want to work with, or make them work together. Interfacing and networking different tools are normally complicated (not just complex!), so trade carefully not to get lost on too many interfaces (rhino, canguru, grasshooper).
Secondly it would be good if you could do a recap of how at the moment thoses test are making you evolve parts of the initial idea. For example technology can be more than mere tools (concept vs instrument), a knife enabled mankind to extend their dominance over parts of nature, in less dramatic sense how is AR helping to think over a few concept of lands you had before? To constantly have this on your side you would be able to re-think the relationship between the project, technology and hopefully land in a more fluid way.
Having said that we do look forward to see how you got along with your goals for this week.
Good luck!

Comment by tutor




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