From 07b6f06f11a82009d43b410b0e849c8fd7773895 Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <james@purplerock.ca>
Date: Thu, 1 Feb 2024 15:42:40 -0800
Subject: [PATCH] optimize: log images with unclear decode tables

---
 src/ocrmypdf/optimize.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/ocrmypdf/optimize.py b/src/ocrmypdf/optimize.py
index f594c244..ec6af78f 100644
--- a/src/ocrmypdf/optimize.py
+++ b/src/ocrmypdf/optimize.py
@@ -155,6 +155,13 @@ def extract_image_jbig2(
                 with imgname.open('wb') as f:
                     ext = pim.extract_to(stream=f)
                 imgname.rename(imgname.with_suffix(ext))
+            except NotImplementedError as e:
+                if '/Decode' in str(e):
+                    log.debug(
+                        f"xref {xref}: skipping image with unsupported Decode table"
+                    )
+                    return None
+                raise
             except UnsupportedImageTypeError:
                 return None
             finally: