Sunil's Blog » FLARMultiMarkerDetector http://www.suniljohn.com/blog Sat, 30 Jan 2010 09:02:07 +0000 en hourly 1 http://wordpress.org/?v=3.0 Starscream, Boba Fett and Jabba the Hut…er…Jasmine the Cat…FlarToolkit AND 3D Animated Models with Keyboard Control http://www.suniljohn.com/blog/starscream-boba-fett-and-jabba-the-huterjasmine-the-catflartoolkit-and-md2-keyboard-control/ http://www.suniljohn.com/blog/starscream-boba-fett-and-jabba-the-huterjasmine-the-catflartoolkit-and-md2-keyboard-control/#comments Wed, 06 May 2009 02:03:16 +0000 admin http://www.suniljohn.com/blog/?p=156

Here’s a link to the live demo to try yourself:

Boba Demo

Direct your iphone here (don’t waste paper, if you can help it!!):

Boba – http://www.suniljohn.com/labs/boba/markers/boba.jpg

Starscream – http://www.suniljohn.com/labs/boba/markers/starscream.jpg

Print the markers here:

Boba – http://www.suniljohn.com/labs/boba/markers/boba.pdf

Starscream – http://www.suniljohn.com/labs/boba/markers/starscream.pdf

There are keyboard controls for both models. ASDW to move Starscream and directional arrows to move Boba Fett. Each character also has jump, taunt and attack controls. There are about 14 other animations I haven’t had time to program.

I re-factored the earlier multimarker flar prototype to use the FLARManager 0.3 from Eric Socolofsky at transmote.com. I was able to trace out the string names of the individual 3D channels of the MD2 models I’ve been using. I can now play the individual animations I want to play instead of looping through them all.

This snippet might help those that are trying to figure out the string names of the 3d channels of their MD2 Quake 2 models:

//_channels = new Array();
  1. //   _channels = animatedBoba.getAnimationChannels();
  2. //
  3. //   trace("channel count", _channels.length);
  4. //
  5. //   for each(var channel:AbstractChannel3D in _channels) {
  6. //    _numFrames = Math.max(_numFrames, channel.keyFrames.length);
  7. //    channel.updateToFrame(_currentFrame);
  8. //    trace("channel.name", channel.name);
  9. //   }

I also implemented Saqoosha’s hole effect using Papervision3d, in the form of trap doors, with some slight modification to what cube faces are visible. I think this has to do flipped coordinate space, when comparing a standard PV3d scene and to the flarnode. Here’s the mod:

Instead of :

var hole:Cube = this.scene.addChild(new Cube(new MaterialsList({all: cmats, bottom: cmatb}), 300, 300, 300, 1, 1, 1, Cube.ALL, Cube.TOP)) as Cube;
  1. this._green = this.scene.addChild(new Cube(new MaterialsList({all: new ColorMaterial(0x00ff00)}), 300, 300, 300, 1, 1, 1, 0, Cube.TOP)) as Cube;
  2.  
  3. Changed to:
  4.  
  5. var __hole : Cube = new Cube(new MaterialsList({all: __cubeSideTexture, bottom: __cubeBottomTexture}), 80, 80, 80, 1, 1, 1, Cube.ALL, Cube.FRONT);
  6. var __green : Cube = new Cube(new MaterialsList({all: new ColorMaterial(0x00ff00)}), 80, 80, 80, 1, 1, 1, 0, Cube.FRONT);

I went through at least 10 different asymmetrical patterns for the Starscream flar marker. Most of the time the camera would keep losing the pattern or confusing it with the Boba Fett pattern. Bad lighting and problematic marker patterns were the biggest issues.

I don’t have to use keycodes very often, but when I do it’s always a pain trying to remember what uint corresponds with what key. Here’s a snippet I picked up for using as3 to generate keycodes:

http://evolve.reintroducing.com/2008/11/21/tips-n-tricks/flash-key-codes/

The end result isn’t quite this:

starwarschess

….but each time I revisit this prototype it’s seems to be getting closer….

In the future I want to implement mac3d’s adaptive filter, to help eliminate problems with marker detection caused by poor lighting conditions.

Also what fun would spawning 3d characters  in AR be without laser canons and collision detection!?!

jasmine_jabba

]]> http://www.suniljohn.com/blog/starscream-boba-fett-and-jabba-the-huterjasmine-the-catflartoolkit-and-md2-keyboard-control/feed/ 9 Revisiting Multiple Pattern Recognition Using the FLARMultiMarkerDetector and an iPhone http://www.suniljohn.com/blog/multiple-pattern-recognition-redux-using-flarmultimarkerdetector-and-iphone-flartoolkitflash-augmented-reality/ http://www.suniljohn.com/blog/multiple-pattern-recognition-redux-using-flarmultimarkerdetector-and-iphone-flartoolkitflash-augmented-reality/#comments Sun, 08 Mar 2009 02:19:58 +0000 admin http://www.suniljohn.com/blog/?p=118 I was able to revisit the spaghetti code on my FLARMultiMarkerDetector prototype and improve performance 100 fold. Thanks to the guys at Squidder.com for sharing their source for the virtual drum kit.

Here’s a post explaining their demo.

Here’s a link to their source.

The MD2 models I’ve been using should be familiar by now and are from Polycount.

I was writing this app on the train and didn’t have a printer to print the patterns. Now I have them on my iPhone, so I can test my Flar apps where ever I happen to be.



One thing I’ve noticed, is that if you cutting the patterns out or are displaying them on an iPhone it seems you have to leave a white margin in addition to the black border for the pattern to be recognized.

]]> http://www.suniljohn.com/blog/multiple-pattern-recognition-redux-using-flarmultimarkerdetector-and-iphone-flartoolkitflash-augmented-reality/feed/ 3 My Cat and Multiple Pattern Recognition Using FLARMultiMarkerDetector – FlarToolKit/Flash Augmented Reality http://www.suniljohn.com/blog/my-cat-jasmine-and-multiple-pattern-recognition-using-flarmultimarkerdetector-flartoolkitflash-augmented-reality/ http://www.suniljohn.com/blog/my-cat-jasmine-and-multiple-pattern-recognition-using-flarmultimarkerdetector-flartoolkitflash-augmented-reality/#comments Mon, 02 Mar 2009 03:48:05 +0000 admin http://www.suniljohn.com/blog/?p=101 I’ve been experimenting with how Flash and FlarToolKit handles multiple patterns using FLARMultiMarkerDetector .  I’ve found that a lot of light is needed for the detector to work reliably with mutiple markers. Here are a couple screens of my progress so far using animated MD2 models of Boba Fett and Starscream. Thanks to my cat Jasmine for the moral support.

multi4
multi1
multi2
multi3

]]> http://www.suniljohn.com/blog/my-cat-jasmine-and-multiple-pattern-recognition-using-flarmultimarkerdetector-flartoolkitflash-augmented-reality/feed/ 7