20x16 light bulbs matrix to turn on and off and play sounds

Projects General Guidance
1

My project proposal is to develop a board with bulbs (a grid of 20x 16 light bulbs) . Attached to the board is a camera and most probably infrared laser sensor to track the user’s movement. Users can then generate beats and lights via sensors/camera.
There are going to three main tools I will be using, MAX/MSP for receiving and processing signals from the sensors and controlling the sounds. These signals are then sent out as open sound control (osc) messages to processing, which converted the messages into a signal for Arduino, which via relays will turn the lights (bulbs / LEDs) on and off.

I would like it to be where it will turn off some bulbs like a shadow.
Basically, you stand in front of it, a camera sees, and it turns off some bulbs like a shadow, and it plays music based on that?
I want 20x16=320 to have four pentatonic octaves.

I was wondering if this is feasible? If so, What are the parts that I need and how do I go about this?

Any help is greatly appreciated.

2

Controlling the LEDs or light bulbs seems relatively easy, its just a 20x16 array. How are you going to combine the camera, with the arduino, a PC or MAC perhaps? This seems like it could all be done straight from a computer, why use an arduino?

3

Is there another alternative to light bulbs as it will be expensive to get that many light bulbs. I was thinking if there's something like monochrome/black lcd display or transparent lcd? That would be good. It would be awesome to have LCD that could change from opaque to black
or LED strips(I know there are some out there)? but I don't know if that's ideal.

if those are not cheap and feasible, I would use Leds, like this project (http://www.instructables.com/id/Lampduino-an-8x8-RGB-Floor-Lamp/)

instead of doing 8x8, it would be 20x16 of leds.

I will be using arduino to relay the lights (on and off to be shadow-like).
It will produce sounds ( ideally to have four pentatonic octaves.(that's why 20x16) ) when it detects movement.

4

Maybe a part like this

to sense a person being in front of a sensor.
How far apart are you planning to have 20x16 array spread out?
16 sensors tall, every 4 inches = 64" (5'4", off set 12" from floor, so reach up to 6'4" for high notes)
20 sensors wide, every 8 inches = 160 inches (13' 4", ~2+ arm spans

5

Each card can have a sensor, light it controls, and be tuned to play a note (see my topic "piano tones micros".
Add RS485 transceiver interface to talk to PC if needed.
#1, got a reflection? No
:
:
#200, got a reflection? Yes. PC does whatever it does
:
:
#319, got a reflection? No.
Repeat.