diff --git a/assets/ocr/model/craft_mlt_25k.pth b/assets/ocr/model/craft_mlt_25k.pth
deleted file mode 100644
index 7461d59..0000000
Binary files a/assets/ocr/model/craft_mlt_25k.pth and /dev/null differ
diff --git a/assets/ocr/model/latin_g2.pth b/assets/ocr/model/latin_g2.pth
deleted file mode 100644
index 867295c..0000000
Binary files a/assets/ocr/model/latin_g2.pth and /dev/null differ
diff --git a/readme.md b/readme.md
index 0c5b3c1..4de102f 100644
--- a/readme.md
+++ b/readme.md
@@ -28,6 +28,13 @@ Select the correct binary download for your platform from the available [release
 5. Logs will be written to `~/Logs/Anonymizer/anonymizer.log`
 ## Documentation
 [Help files](https://rsna.github.io/anonymizer)
+## Sponsors
+
+<div style="display: flex; align-items: center;">
+  <img src="src/assets/icons/signpath_logo.svg" alt="SignPath Logo" style="max-height: 40px; margin-right: 10px;">
+  <p style="margin: 0;">Free code signing on Windows provided by <a href="https://about.signpath.io/">SignPath.io</a>, certificate by <a href="https://signpath.org/">SignPath Foundation</a></p>
+</div>
+
 ## Development
 ### Setup
 1. Setup python enviroment (>3.10) which includes Tkinter, recommend using pyenv with MacOS & Linux
diff --git a/src/assets/icons/signpath_logo.svg b/src/assets/icons/signpath_logo.svg
new file mode 100644
index 0000000..4cdb3e4
--- /dev/null
+++ b/src/assets/icons/signpath_logo.svg
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="37.491459mm"
+   height="32.490829mm"
+   viewBox="0 0 37.491459 32.490829"
+   version="1.1"
+   id="svg1"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <g
+     id="layer1"
+     transform="translate(-71.218366,-60.356446)">
+    <g
+       id="g3684"
+       transform="matrix(0.26458333,0,0,0.26458333,64.048158,54.323946)">
+      <path
+         id="path3682"
+         fill="#22ccff"
+         d="M 133.4,22.8 H 62.6 l -35.5,61.4 35.4,61.4 h 70.9 l 35.4,-61.4 z m 1.7,68.6 C 134.4,93 132.8,94 131,94 H 94.2 c -2.5,0 -4.5,-2 -4.5,-4.5 0,-2.5 2,-4.5 4.5,-4.5 H 121 L 110.5,73.1 a 4.43,4.43 0 0 1 0,-5.9 L 121,55.3 H 76.7 v 71.2 c 0,2.5 -2,4.5 -4.5,4.5 -2.5,0 -4.5,-2 -4.5,-4.5 V 41.7 c 0,-2.5 2,-4.5 4.5,-4.5 2.5,0 4.5,2 4.5,4.5 v 4.6 H 131 c 1.8,0 3.4,1 4.1,2.6 0.7,1.6 0.4,3.5 -0.7,4.8 L 120,70.1 134.4,86.5 c 1.1,1.4 1.4,3.3 0.7,4.9 z" />
+    </g>
+  </g>
+</svg>
diff --git a/src/view/contact_sheet.py b/src/view/contact_sheet.py
index 9dc2b59..3b55b64 100644
--- a/src/view/contact_sheet.py
+++ b/src/view/contact_sheet.py
@@ -1,15 +1,14 @@
 from pathlib import Path
 import logging
-import pydicom
+from pydicom import dcmread
 from pydicom.pixel_data_handlers.util import apply_voi_lut, apply_modality_lut
 import numpy as np
 from PIL import Image
-from cv2 import normalize, NORM_MINMAX, equalizeHist
+from cv2 import normalize, NORM_MINMAX, CV_8U
 import customtkinter as ctk
 from utils.storage import get_dcm_files
 from utils.translate import _
-from io import BytesIO
-import tempfile
+
 
 logger = logging.getLogger(__name__)
 
@@ -50,7 +49,7 @@ def _load_patient_image_frames(self, patient_ids):
         # Loop through all dicom files for these patient(s):
         for dcm_path in dcm_paths:
 
-            ds = pydicom.dcmread(dcm_path)
+            ds = dcmread(dcm_path)
 
             pixels = ds.pixel_array
             pi = ds.get("PhotometricInterpretation", None)
@@ -93,7 +92,6 @@ def _load_kaleidoscopes(self, patient_ids):
 
         total_thumbnails = 0
 
-        # Process patients sequentially & display each series belonging to patient as a kaleidoscope:
         for patient_id in patient_ids:
 
             patient_path = Path(self._base_dir / patient_id)
@@ -109,7 +107,7 @@ def _load_kaleidoscopes(self, patient_ids):
                         all_pixels = []
 
                         for dcm_path in dcm_paths:
-                            ds = pydicom.dcmread(dcm_path)
+                            ds = dcmread(dcm_path)
                             pixels = ds.pixel_array
                             pi = ds.get("PhotometricInterpretation", None)
                             if pi is None:
@@ -123,7 +121,7 @@ def _load_kaleidoscopes(self, patient_ids):
                                     alpha=0,
                                     beta=255,
                                     norm_type=NORM_MINMAX,
-                                    dtype=-1,
+                                    dtype=CV_8U,
                                     mask=None,
                                 )
                                 pixels = pixels.astype(np.uint8)
@@ -132,10 +130,12 @@ def _load_kaleidoscopes(self, patient_ids):
 
                             no_of_frames = ds.get("NumberOfFrames", 1)
                             if no_of_frames == 1:
-                                all_pixels.append(pixels)
+                                all_pixels.append(pixels[..., np.newaxis] if pixels.ndim == 2 else pixels)
                             else:
                                 for frame in range(no_of_frames):
-                                    all_pixels.append(pixels[frame])
+                                    all_pixels.append(
+                                        pixels[frame][..., np.newaxis] if pixels.ndim == 2 else pixels[frame]
+                                    )
 
                             # Create low, mid, and high contrast images
                             if all_pixels: