fix(cv): resolve infinite page duplication bug caused by playback cursor

scripts/debug/print_ascii.py

@@ -0,0 +1,24 @@
+import cv2
+import numpy as np
+import sys
+
+def print_ascii(img_path):
+    img = cv2.imread(img_path, cv2.IMREAD_GRAYSCALE)
+    if img is None: return
+    _, bin_inv = cv2.threshold(img, 200, 255, cv2.THRESH_BINARY_INV)
+    
+    # Trim empty borders
+    coords = cv2.findNonZero(bin_inv)
+    if coords is not None:
+        x,y,w,h = cv2.boundingRect(coords)
+        bin_inv = bin_inv[y:y+h, x:x+w]
+        
+    print(f"\nImage: {img_path}")
+    for row in range(0, bin_inv.shape[0], 2):
+        line = ""
+        for col in range(0, bin_inv.shape[1], 1):
+            line += "##" if bin_inv[row, col] > 127 else "  "
+        print(line)
+
+for i in range(5):
+    print_ascii(rf"C:\Users\Certes\Desktop\guitar_score\scripts\debug\measure_num_{i}.png")