You can load images stored in a database in BLOB format into Qlik Sense by converting to Base64 encoded format in the SQL load script.
Further more, you can render the image in the Sense UI using the native Qlik Sense Map object. This supported object supports expression based sourcing / displaying of the image both as a data field and as a URL to a HTTP accessible image.
The attached example walks through the setup using the sample AdventureWorksDW SQL database (which contains image files stored as BLOBs) along with both Qlik Sense and NPrinting.
This technique provides a similar alternative to the BUNDLE load technique which was available in QlikView.