Maker corner problem with ofxARToolKitPlus, only left side working

Hey,

I’m trying to do basic augmented reality with markers on a 1080p stream from a blackmagic hdmi converter. Things have been going fine, video coming in, did a bunch of calibration for my camera…
But now the markers are are only tracked on the left side of the screen. As soon as it passes the mid point the corners are translated into another, seemingly random, position.
In the image you can see this in the process of happening: as each corner passes the mid point they are individually displaced.

What is weird is that the center point, drawn by artk.draw(); follows the markers nicely, even on the right!

Any help or Hints would be appreciated!

   //--------------------------------------------------------------
void ofApp::setup(){
    ofSetFrameRate(30);
    cam.setup(1920, 1080, 30);
    
    width = 1920;
    height = 1080;
    
    colorImage.allocate(width, height);
    grayImage.allocate(width, height);
    grayThres.allocate(width, height);
    artk.setup(width, height, "cam.cal", "markerboard_480-499.cfg", 8, 6, 6, 12,  1);
    threshold = 125;
    artk.setThreshold(threshold);
}

//--------------------------------------------------------------
void ofApp::update(){
    if(cam.update())
    {
        colorImage.setFromPixels(cam.getColorPixels());
        grayImage = colorImage;
        // apply a threshold so we can see what is going on
        grayThres = grayImage;
        grayThres.threshold(threshold);
        // Pass in the new image pixels to artk
        artk.update(grayImage.getPixels());
    }
}

//--------------------------------------------------------------
void ofApp::draw(){
    ofSetColor(255);
    cam.drawColor();
    if(showGray)
    {
    grayThres.draw(0, 0);
    }
    artk.draw();
    artk.applyProjectionMatrix(1920, 1080);

    // Find out how many markers have been detected
    int numDetected = artk.getNumDetectedMarkers();
    
    // Draw for each marker discovered
    for(int i=0; i<numDetected; i++) {
        // Set the matrix to the perspective of this marker
        // The origin is in the middle of the marker
        artk.applyModelMatrix(i);

        ofNoFill();
        ofSetLineWidth(5);
        ofSetHexColor(0xffffff);
        ofNoFill();
        ofEnableSmoothing();
        ofSetColor(255, 255, 0, 50);	
        for(int i=0; i<10; i++) {		
            ofRect(-25, -25, 50, 50);
            ofTranslate(0, 0, i*1);
        }
    }
}

I had similar problem as well: opened as issue on github (https://github.com/fishkingsin/ofxARtoolkitPlus/issues/3)

But still couldn’t figure it out so in the end I think I downscaled my images to have the width less than 1024 pixels.