Angular - Ejecutar método cuando se pierde el foco de un componente

Fuente: http://stackoverflow.com/questions/19456397/angularjs-ngchange-trigger-onblur

<div ng-controller="MyCtrl">
    <input type='text' ng-blur='blurCount = blurCount + 1'/>

    <input type='text' ng-blur='blurCount = blurCount + 1' />

    blur count: {{blurCount}}
</div>

function MyCtrl($scope) {
    $scope.blurCount = 0;
    $scope.name = 'Superhero';
}