Automatic objects colormap

https://www.notion.so/qim-dtu/Automatic-labels-colormap-122bab83b2f98056a334e949fecb9769

qim3d/viz/explore.py

@@ -81,7 +81,8 @@ def slices(
         img_height = img_size
         img_width = img_size
 
-    # If we pass python None to the imshow function, we will get
+    # If we pass python None to the imshow function, it will set to 
+    # default value 'antialiased'
     if interpolation is None:
         interpolation = 'none'
 
@@ -102,14 +103,10 @@ def slices(
         raise ValueError(
             f"Invalid value for 'axis'. It should be an integer between 0 and {vol.ndim - 1}."
         )
-    
-    if cmap == 'objects':
-        num_labels = len(np.unique(vol))
-        cmap = qim3d.viz.colormaps.objects(num_labels)
 
     if type(cmap) == matplotlib.colors.LinearSegmentedColormap or cmap == 'objects':
         num_labels = len(np.unique(vol))
-        
+
         if cmap == 'objects':
             cmap = qim3d.viz.colormaps.objects(num_labels)
         # If vmin and vmax are not set like this, then in case the