![](https://antonyhall.net/blog/wp-content/uploads/2020/03/Screen-Shot-2020-03-02-at-15.45.50-895x509.png)
A night vision camera captured video during the experiment from behind the mirror[see diagram here]. This used the program Isadora to detect movement using a ‘difference filter’ and building up an image using ‘shimmer’ and ‘motion blur’ filters with a long decay rate. An image builds up based on the collective movements of all 3 participants. A collective strange face.
![](http://antonyhall.net/blog/wp-content/uploads/2020/03/hybrid-826x1024.jpg)
![](http://antonyhall.net/blog/wp-content/uploads/2020/03/IsadoraTemp19082017170406-1024x576.jpg)