Interactions MED2024M - Lene Utklev Gaupen

THE POWER OF PROJECTION

Projection mapping is light mapped onto any surface into interactive displays. To put it simply, its the use of a video projector to display images on a non-flat or non-white surface/object. Projection mapping can and is also called 'video mapping' and augmented reality'.

This type of technology can be used in advertising, live concerts, musicals and plays, gaming, decorations or just displayed as art in itself. Its a new for of media that is spreading and evolving the more it is used. Some examples of this can be seen further down:

Simple projection mapping in Nottingham - Photo taken by me
Still from 'Sydney Opera House Facade Projection' by URBANSCREEN

Optoma

Optoma, as well as offering a wide variation of projectors in all sizes, has created an mobile app called 'Projection Mapping'.

The app is available on Android, iOS and Amazon Kindle Fire devices and works with any projector that you can connect to your smart device. Projection Mapping offers multiple different images and videos, but also allows you to upload your own material.

Projection mapping, in my opinion, is such an amazing technology. It is in a way such a simple technology: projecting an image on a already existing object. The exciting thing is that it is applicable in so many different settings, for entertainment, commercial purposes, art. I think its a really interesting technology that I hope will be used more frequently in the future.

VISUAL ENVIROMENT

VR

Virtual reality is technology that places the user in inside an experience, a virtual 3D world that the user can interact with, using a head-mounted display (HDMs) and some for of input tracking. There are a number of these currently on the market, the most popular one the Oculus, bought by Facebook in 2014 for $2 billion.

How does it work? Well, the 3D video is sent from the console (Playstation, Xbox etc) or the computer to the HDMs via a HDMI cable, or if you are using a smartphone version like the Google Daydream View or Samsung Gear VR the video is already on the smartphone. Inside the HDMs are lenses that angle 2D images into a stereoscopic 3D image. Another important aspect of increasing the immersion is having a wide image. Now, a 360 degree display is extremely expensive and unnecessary considering that 100/110 is more than wide enough to do the trick. The frame rate for the image should be at least 60 frames per second, to ensure that the image is convincing and to avoid stuttering or users feeling sick.

Google Daydream

Now, head tracking; The reason why when you wear a VR headset, the picture shift with you. This is done by using a system called 6DoF that plots your head using x, y, z axis and by using these measure your heads movements.

In the workshow, we tested the HTC Vive. This, as Oculus and Sony's, has controllers to accompany the VR headsets, increasing the immersion even more.

Leap Technology

Another really fascinating VR technology, that we tried out in the workshop are using motion trackers such as Leap Motion offers. We played around with the app Playground for our session:

Leap Motion can in a way remind of Xbox's Kinect and similar technologies. What really makes this exciting is the option to use Leap Motion together with Oculus rift.

Not only is this technology so exciting when it comes to future gaming development and experience, but also films and photography. I personally cannot wait too see the further development and usage of this technology.

AR

Short for augmented reality, AR is a technology that puts computer generated content on top of an existing reality. It is already heavily used in quite a few apps, as well as weather forecasting, sports and other tv settings, advertising. Some examples:

Nintendo's AR card
Pokémon GO
Using AR in the workshop
Example 2

I fell that, as opposed to Projection Mapping, this type of technology is a much more subtle type of technology. It might be because it is already quite heavily used in different situations like weather forecasting or, in a away, Pokemon Go, although that is a very basic form for AR. I think it is a very usable technology, maybe more so than projection mapping, especially the way its used with BlippAR.

INTERACTIVITY VIA MICROCONTROLLERS

A microcontroller is a very small, and quite inexpensive computer that are very useful when you are creating a simple interactive device that does not need the full power of a bigger computer.

Arduino

Arduino is a company/project that creates microcontroller-based kits meant for building digital devices and interactive objects. It uses a USB cable to load code onto the board, making it easy for beginner to use.

littleBits

littleBits is a New York based company that makes an open source library of modular electronics (open-source electronics), which snap together with small magnets for prototyping and learning. The littleBits mission is to "put the power of electronics in the hands of everyone, and to break down complex technologies so that anyone can build, prototype, and invent."

Both Arduino and littleBits works great as an introduction to microcontrollers that is easy enough to not become overwhelming. It is quite an interesting technology, although more difficult to understand than VR, AR and Projection mapping, although that might just be me.

Created By
Lene Gaupen
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Credits:

Created with images by robertnelson - "Rasberry Pi 3"

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