How do I get the transformation matrix of a projection perspective?

[ddobrev]

Hello,

I have applied a projection perspective to a set of playing cards on a table. I need to reproduce the same perspective in a software application. To do that, I need to get the transformation matrix (Transformation matrix - Wikipedia) for me perspective and use it in my source code. Unfortunately, I have been able to find no way to do it. Could you please help?

Regards,

Dimitar Dobrev

[JJMack]

If the deck of cards is a smart object layers and you add the perspective by transforming the smart object.  A Photoshop Script may be able retrieve the smart object layers Transform matrix.    I believe I saw some code posted in the Photoshop Scripting forum to do that.  When the is much warping knowing with to do with the retrieved data was above my pay grade.  Search the Photoshop Scripting for Smart Object information. 

https://forums.adobe.com/search.jspa?place=%2Fplaces%2F1383833&sort=updatedDesc&q=Smart+Object+info