By default, Image data are not posted using Ajax call.
Only plain data will be passed as Ajax posts. if we need to pass image data using Ajax we need to call Ajax as below way,
Call jQuery using requirejs way in a backend template file.
Let’s create a simple example of the form,

Good job rakesh.
Thanks a lot….
Keep up the good work.
Thanks for your valuable suggestion.
Good job rakesh.
Thanks a lot….
Keep up the good work.
Thanks for your valuable suggestion.