力画像を入力画像と生成画像のアルファブレンド（入力30%、生成70%）にしました。

app.py

@@ -152,6 +152,16 @@ def infer(
         num_images_per_prompt=1,
     ).images
 
+    # Alpha blend: input (0.3) + generated (0.7)
+    if result_images and pil_image is not None:
+        generated_image = result_images[0]
+        # Resize input image to match generated image size if different
+        if pil_image.size != generated_image.size:
+            pil_image = pil_image.resize(generated_image.size, Image.Resampling.LANCZOS)
+        # Blend: 0.3 * input + 0.7 * generated
+        blended_image = Image.blend(pil_image, generated_image, alpha=0.7)
+        return blended_image, seed
+
     # Return first result image and seed
     return result_images[0] if result_images else None, seed