fix image hashes (possible)

helpers/images.py

@@ -155,9 +155,24 @@ def print_dicom(dataset, indent=0):
                                                    repr_value))
     return "\n<br/>".join(l)
 
+def get_image_dicom_hash(img) -> (str, bool):
+    dataset = pydicom.dcmread(img)
+    md5 = hashlib.md5()
+    first = True
+    for i in dataset.pixel_array.astype(str).flatten():
+        if first:
+            first = False
+            md5.update(f"{i}".encode())
+        else:
+            md5.update(f",{i}".encode())
+
+    hash = md5.hexdigest()
+    return hash
+
 def get_image_hash(img) -> (str, bool):
     is_dicom = False
     # Try and read the file as a dicom
+    hash = "1234"
     try:
         # and generate a hash from the pixel data
         # TODO: improve?
@@ -181,12 +196,12 @@ def get_image_hash(img) -> (str, bool):
         is_dicom = True
         # ----
 
-    except pydicom.errors.InvalidDicomError:
+    except pydicom.errors.InvalidDicomError as e:
         try:  # This is horrible (but needed for current unit tests)
             # (we use a temporary file that breaks here)
             img.file.open()
             hash = hashlib.md5(img.read()).hexdigest()
         except AttributeError:
-            return "12345ABCD", False
+            return hash, False
 
     return hash, is_dicom