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Tweaking the Tracker from the "Sample Image Recognition"

Tweaking the Tracker from the "Sample Image Recognition"


Hello! 

Hope someone can help me on this already. Just need to know how to make the target work properly. 

Thanks!

 

Hello Jeru,

After changing the target collection, you also need to change the target identifier, i.e. if your target image is named 'pageOne.jpg' then you need to specify the target ID 'pageOne' when creating the AR.Trackable2DObject.

var pageOne = new AR.Trackable2DObject(this.tracker, "pageOne", {
drawables: {
cam: overlayOne
}
});

 

Can you please check if that target ID is set properly?

Best regards,

Nicolas

Also note: I did not have to name the target ID as "a1" 

You have to name the target ID after the names of the images in your myar.wtc. So, if the four images in myar.wtc file were "image1.jpg", "image2.jpg", image3.jpg", and "image4.jpg", and you wanted AR.Trackable2DObject to track the first one, you'd need to construct it as...

var pageOne = new AR.Trackable2DObject(this.tracker, "image1", {
drawables: {
cam: overlayOne
}
});

 

Thans Nicolas!.. 

Works on my end! 

Regards,

I am facing a similar issues as well. I had createda a target collection called myar.wtc with 4 images that has 3 star rating. When I use it as shown below nothing works: 

 

this.tracker = new AR.Tracker("myar.wtc", {

onLoaded: this.worldLoaded

});

// Create overlay for page one

var imgOne = new AR.ImageResource("a1.png");

var overlayOne = new AR.ImageDrawable(imgOne, 1, {

offsetX: -0.15,

offsetY: 0

});

var pageOne = new AR.Trackable2DObject(this.tracker, "pageOne", {

drawables: {

cam: overlayOne

}

});

 

But when I change the wtc file back to the original one from the sample ( magazine.wtc) and replace in the above line of code like below it works :


this.tracker = new AR.Tracker("magazine.wtc", {

onLoaded: this.worldLoaded

});

 

Also note: I did not have to name the target ID as "a1" 

This would make me think that my custom target collection file is not recognised... am I missing something ?

 

Perfect ! that worked. Thanks Ian. 

Hi There,

I am very new with PhoneGap and AR Development and I've just downloaded the SDK and the plugin to experiment on the Sample "HelloImageRecognition". However, I can't seem to make the tracker/target work by changing it. 

What I did;


Went to "Wikitude Target-Manager" page.

Uploaded a 2 star image and geneterated a WTC file of it

Placed the converted image into the "assets" folder
world1_ImageRecognition_1_ImageOnTarget\assets

Run the application 

Overlay don't show up


Hope you can help me on this. 

But I've tried changing the overlay and it does work fine. 

 

Thank you very much.

 

Regards,
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