I have got the camera image using

https://developer.vuforia.com/library/articles/Solution/How-To-Access-the-Camera-Image-in-Unity

after doing some tests on it 
I noticed that getting the target corners using this example

https://developer.vuforia.com/forum/faq/unity-how-can-i-get-target-screen-coordinates

then trying remap it on the raw camera image doesn't work at all.

because the camera image is getting clipped and changing it's scale before using it on the screen

so my question is there a way to mape my target coordinates on the raw Image I get from the CameraDevice.GetCameraImage ??