[fix] small fix

example_pipeline_all_ch.py

@@ -73,14 +73,14 @@ def preprocess_image(img, thresholds, percentiles):
 
     # Save images
     names_save = [os.path.join(path_for_results, os.path.basename(sub)) for sub in files]
-    if isinstance(self.channel_names[0], str):
+    if isinstance(channel_names[0], str):
         images_final = map(
-            lambda p, f: IPrep.save_img_ch_names_pages(p, f, ch_last=True, channel_names=self.channel_names),
+            lambda p, f: IPrep.save_img_ch_names_pages(p, f, ch_last=True, channel_names=channel_names),
             imgs_filtered, names_save)
 
     else:
         # will not save channel names
         images_final = map(lambda p, f: IPrep.save_images(p, f, ch_last=True), imgs_filtered, names_save)
 
-    print(f'Images saved at {self.path_for_results}')
+    print(f'Images saved at {path_for_results}')