From fc154bae222005f465ea60687e76d2b19eab9acb Mon Sep 17 00:00:00 2001
From: godsonj64 <108623780+godsonj64@users.noreply.github.com>
Date: Sat, 21 Jun 2025 11:30:17 -0300
Subject: [PATCH] Fix overflow in color coherence vector calculation

---
 Script | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Script b/Script
index 0c96a6e..3a0ec85 100644
--- a/Script
+++ b/Script
@@ -68,7 +68,9 @@ class ImageStyleTransfer:
         # Calculate Color Coherence Vector (CCV)
         def calculate_ccv(channel, threshold=10):
             blurred = cv2.GaussianBlur(channel, (5, 5), 0)
-            mask = np.abs(channel - blurred) > threshold
+            # Convert to a signed type before subtraction to avoid wrap-around
+            diff = channel.astype(np.int16) - blurred.astype(np.int16)
+            mask = np.abs(diff) > threshold
             coherent = np.sum(mask)
             incoherent = channel.size - coherent
             return coherent, incoherent