diff --git a/modules/advancedSettingsWidget.py b/modules/advancedSettingsWidget.py
index 071bd68e98009ce479b9878aacf3cf71c1ace08e..c11186352d905f3ca41d6f3abacdae3b0415ddba 100644
--- a/modules/advancedSettingsWidget.py
+++ b/modules/advancedSettingsWidget.py
@@ -6,8 +6,6 @@ from PyQt5.QtGui import QPixmap, QImage
 from PyQt5.QtCore import Qt
 import numpy as np
 
-
-
 class AdvancedSettingsWidget(QWidget):
     """
     Shows toggle rainbow, circle editor, line smoothing slider, contrast slider,
diff --git a/modules/compute_cost_image.py b/modules/compute_cost_image.py
index 1da0a6a1978371b8a72c2a7a7d41c444b80d0212..3c88768bd224759efb98c0b5f369f7a878ceca04 100644
--- a/modules/compute_cost_image.py
+++ b/modules/compute_cost_image.py
@@ -4,12 +4,24 @@ from compute_disk_size import compute_disk_size
 from load_image import load_image
 from preprocess_image import preprocess_image
 from circle_edge_kernel import circle_edge_kernel
-
-def compute_cost_image(path, user_radius, sigma=3, clip_limit=0.01):
-
+import numpy as np
+
+def compute_cost_image(path: str, user_radius: int, sigma: int = 3, clip_limit: float = 0.01) -> np.ndarray:
+    """
+    Compute the cost image for a given image path, user radius, and optional parameters.
+    
+    Args:
+        path: The path to the image file.
+        user_radius: The radius of the disk.
+        sigma: The standard deviation for Gaussian smoothing.
+        clip_limit: The limit for contrasting the image.
+
+    Returns:
+        The cost image as a NumPy array.
+    """
     disk_size = compute_disk_size(user_radius)
 
-    ### Load image
+    # Load image
     image = load_image(path)
 
     # Apply smoothing
@@ -18,7 +30,7 @@ def compute_cost_image(path, user_radius, sigma=3, clip_limit=0.01):
     # Apply Canny edge detection
     canny_img = canny(smoothed_img)
 
-    # Do disk thing
+    # Perform disk convolution
     binary_img = canny_img
     kernel = circle_edge_kernel(k_size=disk_size)
     convolved = convolve2d(binary_img, kernel, mode='same', boundary='fill')
diff --git a/modules/export_path.py b/modules/export_path.py
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/modules/mainWindow.py b/modules/mainWindow.py
index 5ec3e7160bab532200056e64bbb16eee60cf7f3a..45ca7e8716b4b891b32614580df2e6b3d2240e32 100644
--- a/modules/mainWindow.py
+++ b/modules/mainWindow.py
@@ -244,8 +244,6 @@ class MainWindow(QMainWindow):
 
         print(f"Exported path with {len(full_xy)} points to {file_path}")
 
-
-
     def clear_points(self):
         self.image_view.clear_guide_points()