Set imageOwnerAlias to self. Not 100% on this, but it will allow you to search for images with 'owner-alias' => 'self'

lib/fog/compute/models/aws/image.rb

@@ -13,6 +13,7 @@ module Fog
         attribute :description
         attribute :location,              :aliases => 'imageLocation'
         attribute :owner_id,              :aliases => 'imageOwnerId'
+        attribute :owner_alias,           :aliases => 'imageOwnerAlias'
         attribute :state,                 :aliases => 'imageState'
         attribute :type,                  :aliases => 'imageType'
         attribute :is_public,             :aliases => 'isPublic'

lib/fog/compute/requests/aws/describe_images.rb

@@ -25,6 +25,7 @@ module Fog
         #       * 'description'<~String> - Description of image
         #       * 'imageId'<~String> - Id of the image
         #       * 'imageLocation'<~String> - Location of the image
+        #       * 'imageOwnerAlias'<~String> - Alias of the owner of the image
         #       * 'imageOwnerId'<~String> - Id of the owner of the image
         #       * 'imageState'<~String> - State of the image
         #       * 'imageType'<~String> - Type of the image
@@ -80,6 +81,7 @@ module Fog
             'kernel-id'           => 'kernelId',
             'manifest-location'   => 'manifestLocation',
             'name'                => 'name',
+            'owner-alias'         => 'imageOwnerAlias',
             'owner-id'            => 'imageOwnerId',
             'ramdisk-id'          => 'ramdiskId',
             'root-device-name'    => 'rootDeviceName',

lib/fog/compute/requests/aws/register_image.rb

@@ -79,7 +79,7 @@ module Fog
               'ramdiskId' => Fog::AWS::Mock.ramdisk_id,
               'platform' => 'Linux',
               'stateReason' => {},
-              'imageOwnerAlias' => self.data[:owner_id],
+              'imageOwnerAlias' => 'self',
               'name' => name,
               'description' => description,
               'rootDeviceType' => '',