code: function loadImage(image) {
  				$scope.$applyAsync(function () {
  					if ($scope.reversed) $scope.flipContext();
  					$scope.signatureReady = true;
  
  					ctxBackground.clearRect(0, 0, canvas.width, canvas.height);
  					ctxBackground.drawImage(image, 0, 0, canvasBackground.width, canvasBackground.height);
  				});
  			}
docs: Load image on canvas