Fang has wrote some instructions for ImageJ in her blog.
http://wangfanghelsinki.wordpress.com/
But see also SIOX at http://fiji.sc/wiki/index.php/SIOX:_Simple_Interactive_Object_Extraction
Sensory and Physiological Ecology of Plants
Decoding the acquisition and use of information by wild and cultivated plant species
Fang has wrote some instructions for ImageJ in her blog.
http://wangfanghelsinki.wordpress.com/
But see also SIOX at http://fiji.sc/wiki/index.php/SIOX:_Simple_Interactive_Object_Extraction