This document discusses using the Kinect sensor with Node.js. It describes connecting the Kinect to Node.js using the Audio Data API and Socket.IO for real-time data streaming. Code examples are provided for an Express server to handle requests and websockets, and using TCP/IP to receive Kinect sensor data and broadcast it over websockets.

1. Kinect
- Kinect Audio Data API node.js -
@hakobera / Kazuyuki Honda
2011/3/24 Node 1

2. • hakobera /
• Web
• : Java / JavaScript
• node.js :
• Kinect :2

3. LT
Kinect
node.js + Socket.IO
Audio Data API

4. Kinect
• 1000
•
•
• Kinect XBox 360 20 2
• SDK

5. Audio Data API
• HTML5 Audio Mozilla
• JavaScript
• Chrome Audio API
API

6. TCP/IP
Socket.IO
Hand Tracker express
HTML
openkinect/libfreenect Audio Data API

8. express
var port = 3000;
var app = express.createServer();
app.configure(function() {
app.use(express.static(__dirname + '/static'));
app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});
app.set('view engine', 'ejs');
app.set('view options', { layout: false });
app.get('/', function(req, res) {
console.log('get index');
res.render('index', { port: port });
});
app.listen(port);

9. Socket.IO
var webSocket = socketIo.listen(app);
webSocket.on('connection', function(client) {
console.log('connected: ' + client.sessionId);
client.on('message', function(msg) {
console.log(msg);
});
client.on('disconnect', function() {
console.log('disconnect');
});
});

10. TCP/IP
var kinectTransporter = net.createServer(function(kinect){
var buff = "";
kinect.on("data", function(d){
var s = d.toString();
var v = s.split(',');
var o = {
x: v[0],
y: v[1]
};
console.log(o);
webSocket.broadcast(JSON.stringify(o));
});
kinect.on('error', function (err) {
console.log("ignoring exception: " + err);
});
});
kinectTransporter.listen(9999);

12. Kinect
C++

13. (C++)

15. Java python
• Java, Python, Ruby, C#, ActionScript
OK

16. JavaScript

17. JavaScript
orz

18. kinect.js

19. kinect.js
libfreenect Java - processing
Rhino
CommonJS
processing
http://processing.org/
kinect java - processing wrapper
http://www.shiffman.net/p5/kinect/

20. var processing = require('processing');
var kinect = require('kinect');
processing.run({
setup: function() {
this.size(kinect.width(), kinect.height());
this.frameRate(5);
kinect.init({
processing: this,
enableDepth: true,
enableIR: false,
enableRGB: false,
processDepthImage: true
});
},
draw: function() {
var depthImg = kinect.getDepthImage();
this.image(depthImg, 0, 0);
},
stop: function() {
kinect.stop();
}
}); Kinect

21. •
• libfreenect
RGB,
• node.js