Hi, I am new to ImageJ and this forum.
I am trying to use ImageJ to analyze bubble size and distribution in water. The picture was taken with high speed camera. My problem are that 1. some bubbles are very close to each other, so after I perform Threshold and Analyze Particles, those bubbles would be counted as one bubble (refer to no.20 and no.32 in the following pics); 2. some bubble has a large shaded area, after I use Analyze Particles, the outline of the shaded area would be counted as a bubble (refer to no.24). For the first problem, I tried to use Watershed, but it didn’t work.
After Threshold and Analyze Particles: