def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
depth = image_itk.GetDepth()
image_nparray = SimpleITK.GetArrayFromImage(image_itk)
if depth > 0:
# Get middle slice of image if 3D
image_nparray = image_nparray[depth // 2]
image = PILImage.fromarray(image_nparray)
image.thumbnail(
(
settings.RETINA_DEFAULT_THUMBNAIL_SIZE,
settings.RETINA_DEFAULT_THUMBNAIL_SIZE,
),
PILImage.ANTIALIAS,
)
response = HttpResponse(content_type="image/png")
image.save(response, "png")
return response
def get(self, request, image_id):
image = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
# This endpoint expects spacing in SimpleITK ordering (x, y, (z)), so reverse image.spacing
response_json = json.dumps(list(reversed(image.spacing)))
return HttpResponse(response_json, content_type="application/json")
def get_image_itk(image_id, user):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=user, image=image_object):
raise PermissionDenied
image_itk = image_object.get_sitk_image()
if image_itk is None:
raise Http404
return image_itk
def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
spacing = image_itk.GetSpacing()
return HttpResponse(json.dumps(spacing),
content_type="application/json")
def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
spacing = image_itk.GetSpacing()
return HttpResponse(
json.dumps(spacing), content_type="application/json"
)
def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
depth = image_itk.GetDepth()
image_nparray = sitk.GetArrayFromImage(image_itk)
if depth > 0:
# Get middle slice of image if 3D
image_nparray = image_nparray[depth // 2]
image = PILImage.fromarray(image_nparray)
image.thumbnail((128, 128), PILImage.ANTIALIAS)
response = HttpResponse(content_type="image/png")
image.save(response, "png")
return response
def serve_images(request, *, pk, path):
document_root = safe_join(f"/{settings.IMAGE_FILES_SUBDIRECTORY}", pk)
path = posixpath.normpath(path).lstrip("/")
name = safe_join(document_root, path)
try:
image = Image.objects.get(pk=pk)
except Image.DoesNotExist:
raise Http404("File not found.")
try:
user, _ = TokenAuthentication().authenticate(request)
except (AuthenticationFailed, TypeError):
user = request.user
if user_can_download_image(user=user, image=image):
return protected_storage_redirect(name=name)
raise Http404("File not found.")
def serve_images(request, *, pk, path):
document_root = safe_join(f"/{settings.IMAGE_FILES_SUBDIRECTORY}", pk)
path = posixpath.normpath(path).lstrip("/")
name = safe_join(document_root, path)
try:
image = Image.objects.get(pk=pk)
except Image.DoesNotExist:
raise Http404("File not found.")
try:
user, _ = TokenAuthentication().authenticate(request)
except (AuthenticationFailed, TypeError):
user = request.user
if user_can_download_image(user=user, image=image):
return protected_storage_redirect(name=name)
raise Http404("File not found.")
def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
npy = sitk.GetArrayFromImage(image_itk)
bio = BytesIO()
np.save(bio, npy)
bio.seek(0)
# return numpy array as response
response = HttpResponse(bio.getvalue(),
content_type="application/octet-stream")
bio.close()
return response
def get(self, request, image_id):
image_object = get_object_or_404(Image, pk=image_id)
if not user_can_download_image(user=request.user, image=image_object):
return HttpResponse(status=status.HTTP_403_FORBIDDEN)
image_itk = image_object.get_sitk_image()
if image_itk is None:
return HttpResponse(status=status.HTTP_404_NOT_FOUND)
npy = sitk.GetArrayFromImage(image_itk)
bio = BytesIO()
np.save(bio, npy)
bio.seek(0)
# return numpy array as response
response = HttpResponse(
bio.getvalue(), content_type="application/octet-stream"
)
bio.close()
return response
def serve_images(request, *, pk, path):
document_root = safe_join(settings.MEDIA_ROOT, "images", pk)
path = posixpath.normpath(path).lstrip("/")
fullpath = safe_join(document_root, path)
try:
imagefile = ImageFile.objects.get(
file__exact=fullpath[len(settings.MEDIA_ROOT):].lstrip("/"))
except ImageFile.DoesNotExist:
raise Http404("File not found.")
try:
user, _ = TokenAuthentication().authenticate(request)
except (AuthenticationFailed, TypeError):
user = request.user
if user_can_download_image(user=user, image=imagefile.image):
return serve_fullpath(fullpath=fullpath)
raise Http404("File not found.")
def serve_images(request, *, pk, path, pa="", pb=""):
document_root = safe_join(
f"/{settings.IMAGE_FILES_SUBDIRECTORY}", pa, pb, str(pk)
)
path = posixpath.normpath(path).lstrip("/")
name = safe_join(document_root, path)
try:
image = Image.objects.get(pk=pk)
except Image.DoesNotExist:
raise Http404("Image not found.")
try:
user, _ = TokenAuthentication().authenticate(request)
except (AuthenticationFailed, TypeError):
user = request.user
if user_can_download_image(user=user, image=image):
create_download.apply_async(
kwargs={"creator_id": user.pk, "image_id": image.pk}
)
return protected_storage_redirect(name=name)
raise PermissionDenied
def has_object_permission(self, request, view, obj):
return user_can_download_image(user=request.user, image=obj)