You can use FrameMarkers if you are fine with using one of the 512 predefined markers (every marker has a special binary code encoded along the borders);

however, if you are willing to use custom images, then you should use ImageTargets;

for instance, imagine you want to make an AR app that shows some augmentation on top of a photo, or a magazine page, then you would use ImageTargets (and that's just one little example).

Make sure to read also the FrameMarker section:

https://developer.vuforia.com/resources/dev-guide/frame-markers

Thanks AlessandroB for your quick reply.

I also review code and run ImageTargets sample. I recognize we can also use ImageTargets for tracking object as well as FrameMarkers. Can you tell me more about difference between using ImageTargets and FrameMarkers for tracking object? In which situation we should use each?

Hi, you cannot create your own Frame Marker,

but you can create your own Image Target (i.e. you can use any image as a target, provided that it contains some detail that the tracker can recognize);

So, if you are insterested in such scenario, you should consider ImageTargets, instead of FrameMarkers.

My recommendation is to have a look at the ImageTargets sample, and to also read this article from our Dev Guide:

https://developer.vuforia.com/resources/dev-guide/image-targets

I wonder how to creat own frame market instead of using 512 frame market in /assets/frame-markers-transparent

Hi, you mention FrameMarker but you refer to the ImageTargets sample;

if you really want to play with FrameMarker, I would recommend to have a look at the FrameMarkers sample;

beside that, you can have a look at the Dev Guide and API reference at https://ar.qualcomm.at, which has lots of useful information to get you started very quickly.