Added smoothing in line shown to user

GUI_draft.py

@@ -2,6 +2,9 @@ import sys
 import math
 import numpy as np
 
+# NEW IMPORT
+from scipy.signal import savgol_filter
+
 from PyQt5.QtWidgets import (
     QApplication, QMainWindow, QGraphicsView, QGraphicsScene,
     QGraphicsEllipseItem, QGraphicsPixmapItem, QPushButton,
@@ -245,6 +248,18 @@ class ImageGraphicsView(QGraphicsView):
                 if len(sub_xy) > 1:
                     big_xy.extend(sub_xy[1:])
 
+        # ---------------------------
+        # NEW: Smooth the path
+        # ---------------------------
+        # big_xy is a list of (x, y). We'll convert to numpy and run savgol_filter
+        if len(big_xy) >= 7:
+            arr_xy = np.array(big_xy)  # shape (N, 2)
+            # Apply Savitzky-Golay filter along axis=0
+            # window_length=7, polyorder=1
+            smoothed = savgol_filter(arr_xy, window_length=7, polyorder=1, axis=0)
+            # Convert back to list of (x, y)
+            big_xy = smoothed.tolist()
+
         # Draw them
         for (px, py) in big_xy:
             path_item = LabeledPointItem(px, py, label="", radius=self.path_radius,