Automatically OCR scanned-pdf in SharePoint ?

Hello

I have some document libraries in SharePoint 2013, they contains many scanned PDF.

I would like to automatically convert scanned-PDF into OCR-PDF.

I have tried manually with Acrobat DC, and it works fine. Now I would like to automate this, maybe with a script, because I have many PDF to OCR.

Is there a way to do this ?