Create labelme.desktop

should be installed to /usr/share/applications
so the gnome/kde menu systems have an icon (you'd also need to provide an icon, labelme.png (or .svg) and put it in /usr/share/icons)

labelme.desktop

+[Desktop Entry]
+Name=Labelme
+Comment=Image Polygonal Annotation with Python
+Exec=labelme
+Icon=labelme
+Terminal=false
+Type=Application
+Categories=Graphics;RasterGraphics;