Update app.py

app.py

@@ -5,6 +5,12 @@ import matplotlib.pyplot as plt
 import warnings
 warnings.filterwarnings("ignore")
 
+# Monkey-patch matplotlib.use so that graph_cut_segmentation.py's
+# module-level `matplotlib.use("TkAgg")` call becomes a no-op on import.
+# We cannot modify that file, so we intercept here instead.
+_real_use = matplotlib.use
+matplotlib.use = lambda *a, **kw: None
+
 # ── Standard imports ───────────────────────────────────────────────────
 import gradio as gr
 import numpy as np
@@ -12,7 +18,7 @@ import cv2
 import io
 from PIL import Image
 
-# ── Pipeline imports (TkAgg call inside module is silently ignored) ────
+# ── Pipeline imports (TkAgg call inside module is now intercepted) ─────
 from graph_cut_segmentation import (
     iterative_graph_cut,
     refine_segmentation,
@@ -23,6 +29,9 @@ from graph_cut_segmentation import (
     generate_auto_annotations,
 )
 
+# Restore real matplotlib.use now that the problematic import is done
+matplotlib.use = _real_use
+
 
 # ══════════════════════════════════════════════════════════════════════
 # Helpers