I have face the overlapping problem when i using camera to detect my marker.Need Help!=(

[ncy]

I need help!
This is my final project,and the original code is from Jonathan Reid.
I face overlapping problem when i using camera to detect marker,mean
that one marker will display more than two 3D image,T..T,can anyone
try to help me?
Thank you so much!

package {
import flash.events.Event;

import org.papervision3d.objects.primitives.Sphere;
import org.papervision3d.materials.BitmapFileMaterial;
import org.papervision3d.materials.ColorMaterial;
import org.papervision3d.lights.PointLight3D;
import org.papervision3d.materials.shadematerials.FlatShadeMaterial;
import org.papervision3d.materials.utils.MaterialsList;
import org.papervision3d.objects.DisplayObject3D;
import org.papervision3d.objects.primitives.Cube;

import com.squidder.flar.FLARMarkerObj;
import com.squidder.flar.PVFLARBaseApplication;
import com.squidder.flar.events.FLARDetectorEvent;


public class MultiFLARExample extends PVFLARBaseApplication {

private var _cubes : Array;

private var _lightPoint : PointLight3D;


public function MultiFLARExample() {

_cubes = new Array();

_markers = new Array();
_markers.push( new FLARMarkerObj( "assets/flar/crash.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/kickdrum.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/ride.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/snare.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/mars.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/jupiter.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/saturn.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/uranus.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/neptune.pat" , 16 ,
50 , 80 ) );
_markers.push( new FLARMarkerObj( "assets/flar/pluto.pat" , 16 ,
50 , 80 ) );

super( );
}

override protected function _init( event : Event ) : void {

super._init( event );

_lightPoint = new PointLight3D( );
_lightPoint.y = 1000;
_lightPoint.z = -1000;

}

override protected function _detectMarkers() : void {

_resultsArray = _flarDetector.updateMarkerPosition( _flarRaster ,
80 , .5 );

for ( var i : int = 0 ; i < _resultsArray.length ; i ++ ) {

var subResults : Array = _resultsArray[ i ];

for ( var j : * in subResults ) {

_flarDetector.getTransmationMatrix( subResults[ j ],
_resultMat );
if ( _cubes[ i ][ j ] != null ) transformMatrix( _cubes[ i ]
[ j ] , _resultMat );
}

}


}

override protected function _handleMarkerAdded( event :
FLARDetectorEvent ) : void {

_addCube( event.codeId , event.codeIndex );
}

override protected function _handleMarkerRemove( event :
FLARDetectorEvent ) : void {

_removeCube( event.codeId , event.codeIndex );

}

private function _addCube( id:int , index:int ) : void {

if ( _cubes[ id ] == null ) _cubes[ id ] = new Array();

if ( _cubes[ id ][ index ] == null ) {

//
var earth : BitmapFileMaterial = new BitmapFileMaterial("assets/
map1.jpg");
var mercury : BitmapFileMaterial = new BitmapFileMaterial("assets/
mercury1.jpg");
var venus : BitmapFileMaterial = new BitmapFileMaterial("assets/
venus1.jpg");
var sun : BitmapFileMaterial = new BitmapFileMaterial("assets/
sun.jpg");
var mars : BitmapFileMaterial = new BitmapFileMaterial("assets/
mars1.jpg");
var jupiter : BitmapFileMaterial = new BitmapFileMaterial("assets/
jupiter1.jpg");
var saturn : BitmapFileMaterial = new BitmapFileMaterial("assets/
saturn1.jpg");
var uranus : BitmapFileMaterial = new BitmapFileMaterial("assets/
uranus1.jpg");
var neptune : BitmapFileMaterial = new BitmapFileMaterial("assets/
neptune1.jpg");
var pluto : BitmapFileMaterial = new BitmapFileMaterial("assets/
pluto1.jpg");


var dispObj : DisplayObject3D = new DisplayObject3D();


if (id==0){

var Earth:Sphere = new Sphere(earth, 40);
Earth.z=200;
dispObj.addChild(Earth);


}

else if(id==1){

var Mercury:Sphere = new Sphere(mercury, 40);
Mercury.z=200;
dispObj.addChild(Mercury);

} else if (id==2) {


var Venus:Sphere = new Sphere(venus, 40);
Venus.z=200;
dispObj.addChild(Venus);


} else if (id==3){

var Sun:Sphere = new Sphere(sun, 40);
Sun.z=200;
dispObj.addChild(Sun);

}

else if (id==4){

var Mars:Sphere = new Sphere(mars, 40);
Mars.z=50;
dispObj.addChild(Mars);

}

else if (id==5){

var Jupiter:Sphere = new Sphere(jupiter, 40);
Jupiter.z=100;
dispObj.addChild(Jupiter);

}

else if (id==6){

var Saturn:Sphere = new Sphere(saturn, 40);
Saturn.z=80;
dispObj.addChild(Saturn);
}

else if (id==7){

var Uranus:Sphere = new Sphere(uranus, 40);
Uranus.z=100;
dispObj.addChild(Uranus);

}
else if (id==8){

var Neptune:Sphere = new Sphere(neptune, 40);
Neptune.z=100;
dispObj.addChild(Neptune);

}

else if (id==9){

var Pluto:Sphere = new Sphere(pluto, 40);
Pluto.z=300;
dispObj.addChild(Pluto);

}

_baseNode.addChild( dispObj );

_cubes[ id ][ index ] = dispObj;

}

_baseNode.addChild( _cubes[ id ][ index ] );

}

private function _removeCube( id:int , index:int ) : void {

if ( _cubes[ id ] == null ) _cubes[ id ] = new Array();

if ( _cubes[ id ][ index ] != null ) {

_baseNode.removeChild( _cubes[ id ][ index ] );
}
}

}
}