NyARToolkit for Java 5.0.0 has been released.
https://github.com/nyatla/NyARToolkit
NyARToolkit 5.0.0 supports the natural features tracking which is same as implemented on ARToolKit5 (NFT) .
The development of NyARToolKit5 has received the funding and technical assistance by DAQRI LLC.
I’m grateful to DAQRI LLC and ARToolKit team.
How to running NFT sample
- Checkout NyARToolKit from Github.
- Import NyARToolkit projects to Eclipse. Make sure that there are no errors in the project shown in ←.
- Print NFT image to paper. If you do not have a printer, display the pdf file into the screen.
infinitycat.pdf - Connect your webcam to computer.
- Run NftSimpleLite.java in NyARToolkit.sample.jogl package.
- It takes a few seconds to startup. When you take a picture with the camera, The color cube will display on image.
NFT Programming
NFT programming with NyARToolkit is simply.
It requires only a few dozen lines of code.
NftSimpleLite.java is a template of NFT application. You can create the unique application by modify the template.
public class NftSimpleLite extends GlSketch
{
String nftdataset="d:\\infinitycat";
String cparam="../../Data/testcase/camera_para5.dat";
private Webcam camera;
private NyARGlNftSystem nyar;
private NyARGlRender render;
private NyARSensor sensor;
public void setup(GL gl)throws Exception
{
this.size(640,480);
NyARNftSystemConfig config = new NyARNftSystemConfig(new FileInputStream(cparam),640,480);
this.camera=Webcam.getDefault();
this.camera.setViewSize(new Dimension(640,480));
this.nyar=new NyARGlNftSystem(config); //create MarkerSystem
this.render=new NyARGlRender(this.nyar);
this.sensor=new NyARSensor(config.getScreenSize());
//
this.id=this.nyar.addNftTarget(nftdataset,160);
gl.glEnable(GL.GL_DEPTH_TEST);
this.camera.open();
}
private int id;
public void draw(GL gl)throws Exception
{
synchronized(this.camera){
try {
this.sensor.update(new NyARBufferedImageRaster(this.camera.getImage()));
this.render.drawBackground(gl,this.sensor.getSourceImage());
this.render.loadARProjectionMatrix(gl);
this.nyar.update(this.sensor);
if(this.nyar.isExistTarget(this.id)){
this.nyar.loadTransformMatrix(gl,this.id);
this.render.colorCube(gl,40,80,60,20);
}
Thread.sleep(1);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args)
{
new NftSimpleLite().run();
return;
}
}
- How to change the tracking image file?
→Change nftdataset value. In NFT, it need to place 3 files(.iset, .fset, .fset3) onto same path.
For example: If you specify “d \\ example”, “c:\\ example.iset”, “c:\\ example.fset”, “c:\\example.fset3” will be used as a tracking image. - How to change the tracking image size?
→Set the paper image width in mm to the second parameter of addNftTarget function. - How to make the tracking image set file?
→NftFileGenerator.jar is a fileset generator.
Download NyARToolkit.utility.zip from the following URL.
https://github.com/nyatla/NyARToolkit/releases
For compatibility with ARToolKit5
Calculation algorithm of NyARToolKit is identical to the ARToolKit5 but there is a slight difference.
The cause of the difference are the accuracy of floating-point calculations, and the simplification of the math functions.
The NyARToolKit and ARToolKit data files(iset fset fset3) are compatible.
These files can be used with each other.
