Load generated images into picasso

I am creating thumbnails from a video dynamically. I don't save these to a file, so I don't have a URI. How do I load these into picasso for caching any ideas or possible alternatives ?

Code to generate the thumbnails from the video.

                    retriever.setDataSource(temp);
                    long frameTimestampMicroseconds = timeStamp * 1000;
                    Bitmap originalBitmap = retriever.getFrameAtTime(frameTimestampMicroseconds);
                    Bitmap scaledBitmap = resize(originalBitmap);
                    originalBitmap.recycle();
                    publishProgress(scaledBitmap);