diff --git a/openpiv/test/test_tools.ipynb b/openpiv/test/test_tools.ipynb
index c0beaafe..5be5253f 100644
--- a/openpiv/test/test_tools.ipynb
+++ b/openpiv/test/test_tools.ipynb
@@ -2,8 +2,10 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 4,
-   "metadata": {},
+   "execution_count": 1,
+   "metadata": {
+    "tags": []
+   },
    "outputs": [],
    "source": [
     "# %load test_tools.py\n",
@@ -19,26 +21,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
     "# test settings.pattern_a, b\n",
-    "from openpiv.windef import Settings\n",
+    "from openpiv.windef import PIVSettings\n",
     "from openpiv.tools import Multiprocesser\n",
     "\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "../data/test2/ 2image_00.tif 2image_01.tif\n"
+      "../data/test2 2image_00.tif 2image_01.tif\n"
      ]
     },
     {
@@ -47,15 +49,15 @@
        "1"
       ]
      },
-     "execution_count": 6,
+     "execution_count": 3,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
    "source": [
     "\n",
-    "settings = Settings()\n",
-    "settings.filepath_images = '../data/test2/'\n",
+    "settings = PIVSettings()\n",
+    "settings.filepath_images = pathlib.Path('../data/test2/')\n",
     "settings.frame_pattern_a = '2image_00.tif'\n",
     "settings.frame_pattern_b = '2image_01.tif'\n",
     "print(settings.filepath_images,settings.frame_pattern_a, settings.frame_pattern_b)\n",
@@ -66,20 +68,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "../data/test2/ 2image_*.tif (1+2),(3+4)\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_00.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_01.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_10.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_11.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_20.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_21.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_30.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_31.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_40.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_41.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_50.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_51.tif\n"
+      "../data/test2 2image_*.tif (1+2),(3+4)\n",
+      "Pair: ../data/test2/2image_00.tif-../data/test2/2image_01.tif\n",
+      "Pair: ../data/test2/2image_10.tif-../data/test2/2image_11.tif\n",
+      "Pair: ../data/test2/2image_20.tif-../data/test2/2image_21.tif\n",
+      "Pair: ../data/test2/2image_30.tif-../data/test2/2image_31.tif\n",
+      "Pair: ../data/test2/2image_40.tif-../data/test2/2image_41.tif\n",
+      "Pair: ../data/test2/2image_50.tif-../data/test2/2image_51.tif\n"
      ]
     }
    ],
@@ -96,25 +98,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "../data/test2/ 2image_*.tif (1+2),(2+3)\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_00.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_01.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_01.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_10.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_10.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_11.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_11.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_20.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_20.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_21.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_21.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_30.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_30.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_31.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_31.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_40.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_40.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_41.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_41.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_50.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_50.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_51.tif\n"
+      "../data/test2 2image_*.tif (1+2),(2+3)\n",
+      "Pair: ../data/test2/2image_00.tif-../data/test2/2image_01.tif\n",
+      "Pair: ../data/test2/2image_01.tif-../data/test2/2image_10.tif\n",
+      "Pair: ../data/test2/2image_10.tif-../data/test2/2image_11.tif\n",
+      "Pair: ../data/test2/2image_11.tif-../data/test2/2image_20.tif\n",
+      "Pair: ../data/test2/2image_20.tif-../data/test2/2image_21.tif\n",
+      "Pair: ../data/test2/2image_21.tif-../data/test2/2image_30.tif\n",
+      "Pair: ../data/test2/2image_30.tif-../data/test2/2image_31.tif\n",
+      "Pair: ../data/test2/2image_31.tif-../data/test2/2image_40.tif\n",
+      "Pair: ../data/test2/2image_40.tif-../data/test2/2image_41.tif\n",
+      "Pair: ../data/test2/2image_41.tif-../data/test2/2image_50.tif\n",
+      "Pair: ../data/test2/2image_50.tif-../data/test2/2image_51.tif\n"
      ]
     }
    ],
@@ -131,24 +133,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 22,
-   "metadata": {},
+   "execution_count": 6,
+   "metadata": {
+    "tags": []
+   },
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "../data/test2/ 2image_*.tif (1+3),(2+4)\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_00.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_10.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_01.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_11.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_10.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_20.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_11.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_21.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_20.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_30.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_21.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_31.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_30.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_40.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_31.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_41.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_40.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_50.tif\n",
-      "Pair: c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_41.tif-c:\\Users\\alex\\repos\\openpiv-python\\openpiv\\data\\test2\\2image_51.tif\n"
+      "../data/test2 2image_*.tif (1+3),(2+4)\n",
+      "Pair: ../data/test2/2image_00.tif-../data/test2/2image_10.tif\n",
+      "Pair: ../data/test2/2image_01.tif-../data/test2/2image_11.tif\n",
+      "Pair: ../data/test2/2image_10.tif-../data/test2/2image_20.tif\n",
+      "Pair: ../data/test2/2image_11.tif-../data/test2/2image_21.tif\n",
+      "Pair: ../data/test2/2image_20.tif-../data/test2/2image_30.tif\n",
+      "Pair: ../data/test2/2image_21.tif-../data/test2/2image_31.tif\n",
+      "Pair: ../data/test2/2image_30.tif-../data/test2/2image_40.tif\n",
+      "Pair: ../data/test2/2image_31.tif-../data/test2/2image_41.tif\n",
+      "Pair: ../data/test2/2image_40.tif-../data/test2/2image_50.tif\n",
+      "Pair: ../data/test2/2image_41.tif-../data/test2/2image_51.tif\n"
      ]
     }
    ],
@@ -166,7 +170,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3.9.13 ('openpiv')",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -180,7 +184,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.11.0"
   },
   "vscode": {
    "interpreter": {