Hi there, I am all new to the use of ImageJ and in need of help. I am currently trying to measure area of algal crusts using the “analyse particles” function in imagej 1.50i, which works perfectly on one image. Unfortunately I want to compare images taken at 2 time steps to compare growth over time. The formed colonies grow and also fuse. Additionally the order in which area is counted changes between the two time steps (it seems that larger colonies are prioritised), which makes the tables impossible to compare. Is there a way to track these changes.