I would like to implement marker-less object detection on my project.
But, I can not find a way to implement marker-less object detection in my project.
Please anyone advice how to do it with ThingWorxStudio.
Just to understand it right: You want to use Spatial Tracking right?
There is an example project which descripe each step very good. Try it.
If you go into you Studio page, it will be there in the latest version (8.0.4). It's called Studio Sample - Spatial Tracking and this is the thumbnail image:
PTC has shown object recognition/detection in ThingWorx View (here) but it's not in Studio yet.
As Stefan mentioned, you can now use Spatial Tracking, but only with a supported Apple device.