Refactor density display in image processing to show total knots instead of calculated density

app.py

@@ -154,11 +154,7 @@ def process_image(image, show_boxes=True):
                 (padding + width//2 - 100, height + padding + padding//2),
                 cv2.FONT_HERSHEY_DUPLEX, 0.7, (0, 0, 0), 2)
     
-    # Calculate area in cm² (assuming 1 pixel = 0.0264 cm)
-    area_cm2 = (width * height * 0.0264 * 0.0264)
-    density = total_knots / area_cm2 if area_cm2 > 0 else 0
-    
-    cv2.putText(padded_img, f"{density:.2f} knots/sqcm",
+    cv2.putText(padded_img, f"{int(total_knots)} knots/sqcm",
                 (padding + width//2 - 100, height + padding + padding//2 + 30),
                 cv2.FONT_HERSHEY_DUPLEX, 0.7, (0, 0, 0), 2)