Pass Image from child page to parent page using jquery

Simply convert image data into base64 on child pase and pass to parent just like text. Hope that makes sense!!

i have project for visitor i want to make pass for visitor by my project. in this project i have two pages in main page all details of visitor and second page is used for capture image by webcam. after capture and crop visitor image i want to pass that image on my main page to make visitor pass. the second page is a popup page for capture image