how to open image from sdcard by use file path

hi everyone this is my first time to post the question in this community

I am newbie with corona and mobile app dev .
My question is how can I open image file that store in sdcard or device storage by use File path ex “sdcard/image/mypicture.png” .
I found the solution that open camera or gallery to pick up the image but I don’t want user to choose by own

My goal is open image on sdcard and then encode file to base64 string and sent them to server

** Sorry for my bad English ** [import]uid: 114404 topic_id: 25815 reply_id: 325815[/import]

+1 [import]uid: 104085 topic_id: 25815 reply_id: 120124[/import]

+1 [import]uid: 104085 topic_id: 25815 reply_id: 120124[/import]