Pass data using jQuery Trigger event to a Change event handler?

.live() is deprecated. Use .on() like this. And change event should be triggered, not click

$('.change_main_image').on('click', function() {
    $('input[name=photo].change_uploader').trigger('change', [{somedata:true}]);
});


$('input[name=photo].change_uploader').on('change', function (e, data) {
   alert(data.somedata); 
   //canvas resize and upload script
});