From faf662d12e7ed3f1ba2869109db239561a03dca0 Mon Sep 17 00:00:00 2001
From: psychedelicious <4822129+psychedelicious@users.noreply.github.com>
Date: Mon, 4 Aug 2025 21:07:50 +1000
Subject: [PATCH] refactor(backend): use BICUBIC resampling for Kontext images

Switch from LANCZOS to BICUBIC for smoother image resizing to reduce
artifacts in reference image processing
---
 invokeai/backend/flux/extensions/kontext_extension.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/invokeai/backend/flux/extensions/kontext_extension.py b/invokeai/backend/flux/extensions/kontext_extension.py
index 1c75bed051..f9d1cccf27 100644
--- a/invokeai/backend/flux/extensions/kontext_extension.py
+++ b/invokeai/backend/flux/extensions/kontext_extension.py
@@ -133,7 +133,8 @@ class KontextExtension:
             image = image.convert("RGB")
             final_width = 8 * scaled_width
             final_height = 8 * scaled_height
-            image = image.resize((final_width, final_height), Image.Resampling.LANCZOS)
+            # Use BICUBIC for smoother resizing to reduce artifacts
+            image = image.resize((final_width, final_height), Image.Resampling.BICUBIC)
 
             # Convert to tensor with same normalization as BFL
             image_np = np.array(image)