convert base64 coded images to file input element

Question

I am using a scanner API to scan images in my web application, its running well. But its create an image to view with src coded likes this:

<img src="data:image/jpeg;base64,/9j/4AAQS....">    

I want to upload this image using my simple code witch post (input file) to PHP file in ajax by element id

<input type="file" >    

So how can I convert this img element to (input file) element, or how can I post and upload this coded src

Thanx