Hide input image while running the plugin
add javadoc comments to describe plugin
Move the connectivity and priority queue options to a new "advanced options" panel.
Add advanced option with morphological gradient.

For the moment, the structural element is a cube and the radius is 1.
Speed up creation of result image.
Zoom in input image if it's too small (dimensions < 512 pixels)
Add verbose flag in the watershed transform classes to control the output messages.
Add error control in the plugin to make sure the input image is grayscale and the dynamic value is valid.