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Augmented Reality in JavaScript

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Avatar for Zeno Rocha Zeno Rocha
April 02, 2013
Programming
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Augmented Reality in JavaScript

Presented at HTML5 Dev Conf - San Francisco, 2013.

Avatar for Zeno Rocha

Zeno Rocha

April 02, 2013
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Transcript

  1. augmented reality.js San Francisco, 2013.

  2. None

  3. I’m from brazil

  4. no, I don’t samba

  5. None
  6. None

  7. I ♥ HTML5

  8. html5-pro.com/wormz

  9. I ♥ opensource

  10. browserdiet.com

  11. today we’re going to talk about augmented reality...

  12. None

  13. ...and how to integrate different HTML5 APIs

  14. augumented reality is everywhere, or it will be... augmented reality

    is (or at least will be) everywhere

  15. before it was cool used Google Glass

  16. what is augmented reality?

  17. None

  18. how can you do it using javascript?

  19. mzl.la/ilyX7k

  20. 1. capture webcam

  21. None

  22. dev.w3.org/2011/webrtc/editor/webrtc.html

  23. None

  24. Access user's camera and microphone navigator.getUserMedia({ video: true, audio: true

    }, onSuccess, onFail); STEP 1

  25. 2. play the captured video

  26. <video>

  27. Play webcam's content into a video element function onSuccess(stream) {

    var video = document.querySelector('video'); video.src = window.URL.createObjectURL(stream); video.onloadedmetadata = function(e) { // Ready }; } STEP 2

  28. 3. track a pattern of pixels

  29. <canvas>

  30. <video> <canvas>

  31. None

  32. fiducial markers

  33. github.com/kig/JSARToolKit

  34. libspark.org/wiki/saqoosha/FLARToolKit/en

  35. hitl.washington.edu/artoolkit

  36. soundstep.com/blog/experiments/jstracking/

  37. bit.ly/XR0aGH

  38. bit.ly/124FT3A FIDUCIAL MARKERS

  39. None

  40. <html><head> <script src="../../src/NyAs3Utils.js"></script> <script src="../../src/FLARArrayUtil.js"></script> <script src="../../src/FLARException.js"></script> <script src="../../src/FLARMat.js"></script> <script

    src="../../src/FLARRgbPixelReader.js"></script> <script src="../../src/NyARHistogramAnalyzer.js"></script> <script src="../../src/NyARPca2d.js"></script> <script src="../../src/NyARRasterReader.js"></script> <script src="../../src/NyARTypes.js"></script> <script src="../../src/FLARRasterFilter.js"></script> <script src="../../src/FLARTypes.js"></script> <script src="../../src/NyARLabel.js"></script> <script src="../../src/FLARLabeling.js"></script> <script src="../../src/NyARParam.js"></script> <script src="../../src/FLARParam.js"></script> <script src="../../src/NyARRaster.js"></script> <script src="../../src/FLARRaster.js"></script> <script src="../../src/NyARCode.js"></script> <script src="../../src/FLARCode.js"></script> <script src="../../src/NyARMatch.js"></script> <script src="../../src/NyARRasterAnalyzer.js"></script> <script src="../../src/FLARRasterAnalyzer.js"></script> <script src="../../src/NyARRasterFilter.js"></script> <script src="../../src/NyARSquareDetect.js"></script> <script src="../../src/FLARSquareDetect.js"></script> <script src="../../src/NyARTransMat.js"></script> <script src="../../src/FLARTransMat.js"></script>
  41. None

  42. face detection

  43. webdesign.maratz.com/lab/responsivetypography RESPONSIVE TYPOGRAPHY

  44. github.com/auduno/headtrackr

  45. auduno.github.com/headtrackr/examples/targets.html HEADTRACKR TARGETS

  46. None
  47. None

  48. @eduardolundgren (Liferay)

  49. trackingjs.com

  50. bit.ly/YVPz3e

  51. bit.ly/ZSZuUd TRACKING.JS SINGLE CONTROLLER

  52. None

  53. Imports tracking.js core Imports tracking.js color module <script src="tracker/color.js"></script> <script

    src="tracking.js"></script> STEP 1 SINGLE CONTROLLER

  54. Gets user's camera and renders it var videoCamera = new

    tracking .VideoCamera() .render(); STEP 2 SINGLE CONTROLLER

  55. Hides video camera and renders a canvas from it videoCamera

    = videoCamera .hide() .renderVideoCanvas(); STEP 3 SINGLE CONTROLLER

  56. STEP 4 SINGLE CONTROLLER Instantiates tracking by magenta color videoCamera.track({

    type: 'color', color: 'magenta', onFound: function() {}, onNotFound: function() {} });

  57. STEP 5 SINGLE CONTROLLER Paints with magenta all detected pixels

    onFound: function(track) { var pixels = track.pixels, ctx = videoCamera.canvas.context; for (var i = 0, len = pixels.length; i < len; i += 2) { ctx.fillStyle = "rgb(255,0,255)"; ctx.fillRect(pixels[i], pixels[i+1], 2, 2); } ctx.fillStyle = "rgb(0,0,0)"; ctx.fillRect(track.x, track.y, 5, 5); }

  58. bit.ly/118nzaL TRACKING.JS MULTIPLE CONTROLLERS

  59. None

  60. Gets user's camera and renders it var videoCamera = new

    tracking .VideoCamera() .render(); STEP 1 MULTIPLE CONTROLLERS

  61. Hides video camera and renders a canvas from it videoCamera

    = videoCamera .hide() .renderVideoCanvas(); STEP 2 MULTIPLE CONTROLLERS

  62. STEP 3 MULTIPLE CONTROLLERS Instantiates tracking by magenta color videoCamera.track({

    type: 'color', color: 'magenta', onFound: function() {}, onNotFound: function() {} });

  63. STEP 4 MULTIPLE CONTROLLERS Draws a square around tracked area

    onFound: function(track) { var size = 60 - track.z; var ctx = videoCamera.canvas.context; ctx.strokeStyle = "rgb(255,0,255)"; ctx.lineWidth = 3; ctx.strokeRect(track.x - size*0.5, track.y - size*0.5, size, size); }

  64. STEP 5 MULTIPLE CONTROLLERS Instantiates tracking by cyan color videoCamera.track({

    type: 'color', color: 'cyan', onFound: function() {}, onNotFound: function() {} });

  65. STEP 6 MULTIPLE CONTROLLERS Draws a square around tracked area

    onFound: function(track) { var size = 60 - track.z; var ctx = videoCamera.canvas.context; ctx.strokeStyle = "rgb(0,255,255)"; ctx.lineWidth = 3; ctx.strokeRect(track.x - size*0.5, track.y - size*0.5, size, size); }

  66. bit.ly/10mIS6h TRACKING.JS DRAW SOMETHING

  67. None

  68. bit.ly/XR5vha TRACKING.JS MINECRAFT

  69. None
  70. None

  71. bit.ly/X6LuGj TRACKING.JS GLASSES

  72. IT’S UP TO YOU!

  73. None

  74. thanks :) zenorocha.com