From a4a7558ce7bfd38080a9b0a66d1b8aafb0d947ad Mon Sep 17 00:00:00 2001
From: Stefan <96178532+stefan6419846@users.noreply.github.com>
Date: Thu, 21 Dec 2023 14:55:34 +0100
Subject: [PATCH 1/2] BUG: Handle IndirectObject as image filter

---
 pypdf/filters.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pypdf/filters.py b/pypdf/filters.py
index d1c06a341..659ff17bd 100644
--- a/pypdf/filters.py
+++ b/pypdf/filters.py
@@ -781,6 +781,9 @@ def _xobj_to_image(x_object_obj: Dict[str, Any]) -> Tuple[Optional[str], bytes,
     alpha = None
     filters = x_object_obj.get(SA.FILTER, [None])
     lfilters = filters[-1] if isinstance(filters, list) else filters
+    if isinstance(lfilters, IndirectObject):
+        lfilters = lfilters.get_object()
+        lfilters = lfilters[-1] if isinstance(lfilters, list) else lfilters
     if lfilters in (FT.FLATE_DECODE, FT.RUN_LENGTH_DECODE):
         img, image_format, extension, _ = _handle_flate(
             size,

From 14e09c494c936c34176d85b83d298e00565e08e8 Mon Sep 17 00:00:00 2001
From: Stefan <96178532+stefan6419846@users.noreply.github.com>
Date: Fri, 22 Dec 2023 11:16:00 +0100
Subject: [PATCH 2/2] simplify as proposed

---
 pypdf/filters.py | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/pypdf/filters.py b/pypdf/filters.py
index 659ff17bd..7c7c85965 100644
--- a/pypdf/filters.py
+++ b/pypdf/filters.py
@@ -779,11 +779,8 @@ def _xobj_to_image(x_object_obj: Dict[str, Any]) -> Tuple[Optional[str], bytes,
         )
     extension = None
     alpha = None
-    filters = x_object_obj.get(SA.FILTER, [None])
+    filters = x_object_obj.get(SA.FILTER, NullObject()).get_object()
     lfilters = filters[-1] if isinstance(filters, list) else filters
-    if isinstance(lfilters, IndirectObject):
-        lfilters = lfilters.get_object()
-        lfilters = lfilters[-1] if isinstance(lfilters, list) else lfilters
     if lfilters in (FT.FLATE_DECODE, FT.RUN_LENGTH_DECODE):
         img, image_format, extension, _ = _handle_flate(
             size,