E4+MoodWall

=E4 Motion Wall= or E4 Mood Wall

__What is it?__
E4 Motion Wall is a project created by Matthias Oostrik. It was on exhibit on ImageRadio Festival 2007. It is an interactive high resolution installation of Philips video wall. It is a visual feedback of pedetrians' movements.

__How does it work?__
I think this wall is also operated by digital cameras and movement sensors. The sensors connect to both audio and video devices. When there's no one pass by, it makes a flowy and peaceful pattern with no sound. If there's anyone passing by, it tracks that person's movement, directly display it on the screen by using blurry colors and shapes; then it makes a delightful sound. I didn't find exactly how it works. I can only give a guess. As the picture below, all the black dots are motion and distance sensors. Their max height from top to bottom would probably the standard height of a person with arms reach out. Whenever a person pass by, it activates the sensor dots so that it captures that person's motion. Then the sensors just have to light up in different colors/ resolutions in order to finish the feedback process.

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__My Analysis__
Some people on the internet also call this project "E4 Mood Wall". I think this name also make sense. It reflects certain emotions by using abstract shapes and colors. The blurry transition of colors add its depth. I like the soundtrack idea. It reminds me of the Legend of 1900. He plays piano in the hall of a ship according to the passengers' emotions, expressions and movements. I had something similar in mind too. I was planning to do a sound track wall like this. It reflects people's walking speed. The visual would be similar with E4. For the soundtrack part, if people go fast, the music goes fast; if people moves very slow, the music becomes so slow that it feels like it's almost running out of battery. People can go back and forth as they want to. How the music sound like will totally depends on the person's movements.

__Reference:__
[|Matthias Oostrik]