angular.module('yourModule', [..., 'hj.imagesLoaded']);

app.controller('MyCtrl', function($scope) {
	var ctrl = this;

	$scope.$on('imagesLoaded:loaded', function(event, element){
		console.log('loaded', element);
	});

	ctrl.imgLoadedEvents = {

		always: function(instance) {
			// Do stuff
		},

		done: function(instance) {
			angular.element(instance.elements[0]).addClass('loaded');
		},

		fail: function(instance) {
			// Do stuff
		}

	};

});

<div class="images-loaded" images-loaded-events="ctrl.imgLoadedEvents">

	<img src="kitten.jpg">

</div>

<div images-loaded="ctrl.imgLoadedEvents"
	images-loaded-watch="vm.image"
	images-loaded-options="{ background: true }">

	<div ng-style="{ backgroundImage: 'url(' + vm.image + ')' }">

</div>