Hi, all

I try to learn Augmented Reality with this library nyar4psg .

But all the examples I try to run end of getting yellow mark in this line as following code. It does not show error message but the running view is just blank, so I figure something might be wrong but I am not sore what it is. 

1. /**
   NyARToolkit for proce55ing/1.0.0
   (c)2008-2011 nyatla
   airmail(at)ebony.plala.or.jp
   
   ARマーカと同じ平面からマーカパターンを得る事ができます。
   Hiroマーカを使います。
   
   This program gets the image from around the marker.
   The marker file is "patt.hiro"
   */
   import processing.video.*;
   import jp.nyatla.nyar4psg.*;
   
   Capture cam;
   MultiMarker nya;
   
   
   void setup() {
   size(640,480,P3D);
   colorMode(RGB, 100);
   println(MultiMarker.VERSION);
   cam=new Capture(this,640,480);
   nya=new MultiMarker(this,width,height,"camera_para.dat",NyAR4PsgConfig.CONFIG_PSG);
   nya.addARMarker("patt.hiro",80);//id=0
   }
   
   int c=0;
   void draw()
   {
   c++;
   if (cam.available() !=true) {
   return;
   }
   cam.read();
   nya.detect(cam);
   background(0);
   nya.drawBackground(cam);//frustumを考慮した背景描画
   if((!nya.isExistMarker(0))){
   return;
   }
   PImage pm=nya.pickupRectMarkerImage(0,-40,-40,80,80,100,100);
   //以下のコードと意味は同じです。 The meaning of this code is the same as the next lines.
   //PImage pm=nya.pickupMarkerImage(0,40,40,-40,40,-40,-40,40,-40,100,100);
   image(pm,0,0);
   }