cam.js

var Hapi = require('hapi');
var cv = require('opencv');

var cam = new cv.VideoCapture(0);

var server = Hapi.createServer(9999);

server.route({
  path: '/cam.jpg',
  method: 'GET',
  handler: function (request, reply) {
    cam.read(function (err, img) {
      img.toBufferAsync(function (err, data) {
        reply(data).type('image/jpg');
      });
    });
  }
});

server.start();