diff --git a/homeassistant/components/image_processing/__init__.py b/homeassistant/components/image_processing/__init__.py
index 8e59ba53958..c63d3d01ce9 100644
--- a/homeassistant/components/image_processing/__init__.py
+++ b/homeassistant/components/image_processing/__init__.py
@@ -28,6 +28,11 @@ _LOGGER = logging.getLogger(__name__)
 
 SCAN_INTERVAL = timedelta(seconds=10)
 
+DEVICE_CLASSES = [
+    'alpr',        # automatic license plate recognition
+    'face',        # face
+]
+
 SERVICE_SCAN = 'scan'
 
 ATTR_CONFIDENCE = 'confidence'
diff --git a/homeassistant/components/image_processing/microsoft_face_identify.py b/homeassistant/components/image_processing/microsoft_face_identify.py
index 1cc17f1443b..8d716bea0d5 100644
--- a/homeassistant/components/image_processing/microsoft_face_identify.py
+++ b/homeassistant/components/image_processing/microsoft_face_identify.py
@@ -90,6 +90,11 @@ class ImageProcessingFaceEntity(ImageProcessingEntity):
 
         return state
 
+    @property
+    def device_class(self):
+        """Return the class of this device, from component DEVICE_CLASSES."""
+        return 'face'
+
     @property
     def state_attributes(self):
         """Return device specific state attributes."""
diff --git a/homeassistant/components/image_processing/openalpr_local.py b/homeassistant/components/image_processing/openalpr_local.py
index dbd404dd04c..a9378dd653d 100644
--- a/homeassistant/components/image_processing/openalpr_local.py
+++ b/homeassistant/components/image_processing/openalpr_local.py
@@ -94,6 +94,11 @@ class ImageProcessingAlprEntity(ImageProcessingEntity):
                 plate = i_pl
         return plate
 
+    @property
+    def device_class(self):
+        """Return the class of this device, from component DEVICE_CLASSES."""
+        return 'alpr'
+
     @property
     def state_attributes(self):
         """Return device specific state attributes."""