add basic dicom diff support

atlas/views.py

@@ -17,6 +17,7 @@ from django.core.exceptions import (
 from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMixin
 from django.views.generic import View
 from django.views.generic.detail import DetailView
+import pydicom
 from generic.mixins import SuperuserRequiredMixin
 
 from django.views.generic.edit import CreateView, UpdateView, DeleteView, FormView
@@ -116,7 +117,7 @@ import plotly.express as px
 from django.core.cache import cache
 from django.conf import settings
 
-from helpers.images import image_as_base64
+from helpers.images import image_as_base64, print_dicom
 
 import logging
 from copy import deepcopy
@@ -130,6 +131,7 @@ import reversion
 from rest_framework import viewsets
 
 import os
+import difflib
 
 logger = logging.getLogger(__name__)
 
@@ -1039,6 +1041,32 @@ def series_order_dicom(request, pk):
 
     return redirect("atlas:series_detail", pk=pk)
 
+@login_required
+def image_diff(request):
+    if request.htmx:
+
+        image_ids = request.POST.getlist("image-id")
+
+        first: SeriesImage = get_object_or_404(SeriesImage, pk=image_ids[0])
+        second: SeriesImage = get_object_or_404(SeriesImage, pk=image_ids[1])
+
+        first_ds = pydicom.read_file(first.image.file)
+        #del first_ds.PixelData
+        #j1 = first_ds.to_json_dict()
+        f = print_dicom(first_ds, join=False)
+
+        second_ds = pydicom.read_file(second.image.file)
+        #del second_ds.PixelData
+        #j2 = second_ds.to_json_dict()
+        s = print_dicom(second_ds, join=False)
+
+        diff = difflib.HtmlDiff().make_table(f, s)
+
+        return HttpResponse(diff)
+
+
+    return HttpResponse("Fail")
+
 
 @login_required
 def series_image_dicom(request, pk):