diff --git a/exact/exact/images/urls.py b/exact/exact/images/urls.py
index c65feafa..821f32d1 100644
--- a/exact/exact/images/urls.py
+++ b/exact/exact/images/urls.py
@@ -26,6 +26,7 @@
re_path(r'^image/(\d+)/(\d+)/(\d+)/tile_files/(\d+)/(\d+_\d+.(?:png|jpeg))$', views.view_image_tile, name='view_image_tile'),
re_path(r'^api/image/verify/$', views.api_verify_image, name='verify_image'),
+ re_path(r'^api/image/metadata/(\d+)/$', views.image_metadata, name='metadata'),
re_path(r'^api/image/plugins/$', views.image_plugins, name='plugins'),
re_path(r'^image/centered_snapshot/(\d+)/(\d+)/(\d+)/(\d+)/(\d+)/', views.image_snapshots, name='centered_image_snapshot'),
diff --git a/exact/exact/images/views.py b/exact/exact/images/views.py
index 31d21e49..a93f3d22 100644
--- a/exact/exact/images/views.py
+++ b/exact/exact/images/views.py
@@ -426,6 +426,53 @@ def view_image(request, image_id, z_dimension:int=1, frame:int=1):
cache.set(cache_key, value, None)
return HttpResponse(value, content_type='application/xml')
+@login_required
+@api_view(['GET'])
+def image_metadata(request, image_id) -> Response:
+ image = get_object_or_404(Image, pk=image_id)
+ if not image.image_set.has_perm('read', request.user):
+ return Response({
+ 'detail': 'permission for reading this image set missing.',
+ }, status=HTTP_403_FORBIDDEN)
+
+ meta_data = {}
+ # descriptions in plain english
+ meta_data_dict = {'level_count': 'Image levels',
+ 'image_size': 'Image size',
+ 'numberOfFrames': 'Number of frames',
+ 'frame_type': 'Frame type',
+ 'mpp_x': 'x Resolution (microns/px)',
+ 'mpp_y': 'y Resolution (microns/px)',
+ }
+
+ try:
+ slideobj = image_cache.get(image.path())
+
+ meta_data['level_count'] = slideobj.level_count
+ meta_data['image_size'] = ' x '.join([str(x) for x in slideobj.dimensions])
+ meta_data['numberOfFrames'] = slideobj.nFrames
+ meta_data['mpp_x'] = slideobj.mpp_x
+ meta_data['mpp_y'] = slideobj.mpp_y
+
+ if (slideobj.nFrames>1):
+ meta_data['frame_type'] = slideobj.frame_type
+
+ meta_data.update(slideobj.meta_data)
+ meta_data_dict.update(slideobj.meta_data_dict)
+
+ except Exception as e:
+ logger.error(str(e))
+
+ return Response({
+ 'detail': 'Unable to retrieve basic metadata.',
+ }, status=HTTP_403_FORBIDDEN)
+
+ return Response({
+ 'meta_data': meta_data,
+ 'meta_data_dict': meta_data_dict,
+ }, status=HTTP_200_OK)
+
+
@login_required
@api_view(['GET'])
def image_plugins(request) -> Response:
diff --git a/exact/util/slide_server.py b/exact/util/slide_server.py
index 14b97ada..25e82e88 100644
--- a/exact/util/slide_server.py
+++ b/exact/util/slide_server.py
@@ -56,7 +56,44 @@ def get_tile(self, level, address, frame=0):
tile.info['icc_profile'] = profile
return tile
+
+ @property
+ def dimensions(self):
+ if hasattr(self._osr,'dimensions'):
+ return self._osr.dimensions
+ else:
+ return [0]
+
+ @property
+ def meta_data(self):
+ if hasattr(self._osr,'meta_data'):
+ return self._osr.meta_data
+ else:
+ return {}
+
+ @property
+ def meta_data_dict(self):
+ if hasattr(self._osr,'meta_data_dict'):
+ return self._osr.meta_data_dict
+ else:
+ return {}
+ @property
+ def nFrames(self):
+ if hasattr(self._osr,'nFrames'):
+ return self._osr.nFrames
+ else:
+ return None
+
+ @property
+ def frame_type(self):
+ if hasattr(self._osr,'frame_type'):
+ return self._osr.frame_type
+ else:
+ return None
+
+
+
class OpenSlideWrapper(openslide.OpenSlide):
"""
Wraps an openslide.OpenSlide object. The rationale here is that OpenSlide.read_region does not support z Stacks / frames as arguments, hence we have to encapsulate it
@@ -523,8 +560,12 @@ def get(self, path):
mpp_x = osr.properties[openslide.PROPERTY_NAME_MPP_X]
mpp_y = osr.properties[openslide.PROPERTY_NAME_MPP_Y]
slide.mpp = (float(mpp_x) + float(mpp_y)) / 2
+ slide.mpp_x = mpp_x
+ slide.mpp_y = mpp_y
except (KeyError, ValueError):
slide.mpp = 0
+ slide.mpp_x = 0
+ slide.mpp_y = 0
with self._lock:
if path not in self._cache: