Update app.py

app.py

@@ -148,8 +148,8 @@ def homography_all_detectors(flat_file, persp_file, json_file, xml_file):
         # Add headings
         flat_rgb = add_heading(flat_rgb, "Flat Image")
         match_rgb = add_heading(match_rgb, "Flat -> Perspective Feature Matching")
-        roi_rgb = add_heading(roi_rgb, "Perspective Image with Homography ROI")
-        xml_rgb = add_heading(xml_rgb, "Perspective GT ROI")
+        roi_rgb = add_heading(roi_rgb, "Perspective Image with Homography ROI  ")
+        xml_rgb = add_heading(xml_rgb, "    Perspective GT ROI")
 
         # Merge 2x2 grid
         top = np.hstack([flat_rgb, match_rgb])