The new version the CellCounter plugin will do this for you.
>Hi,
>
>I would like to use ObjectJ to count and categorize different markers within
>dendritic spines. This analysis is done manually on stacked images over 2 or
>more time-points. The only problem I faced with the current ObjectJ is that
>I am not able to see the labeled count when I toggled to the next
>image/slice. The labeled markers need to be visible throughout the stacked
>images. I would greatly appreciate if anyone could let me know how to make
>the labeled counts visible or any other suitable plugin.
>
>Kind regards,
>Ai Na