tophat inverts colors back if baground is white

qim3d/processing/filters.py

@@ -232,9 +232,13 @@ def tophat(vol, **kwargs):
     background = kwargs["background"] if "background" in kwargs else "dark"
     
     if background == "bright":
-            log.info("Bright background selected, volume will be inverted.")
+            log.info("Bright background selected, volume will be temporarily inverted when applying white_tophat")
             vol = np.invert(vol)
     
     selem = morphology.ball(radius)
     vol = vol - morphology.white_tophat(vol, selem)
+
+    if background == "bright":
+        vol = np.invert(vol)
+    
     return vol