Nodame is a computer program for measuring nodule size. This software can measure nodule size in images. This software is provided as freeware.
Sayuri Tanabata, Takanari Tanabata, Akinori Saito, Seiya Tajima, Shiori Watanabe, Keisuke Ishikawa, Norikuni Ohtake, Kuni Sueyoshi and Takuji Ohyama, "Computational image analysis method for measuring size of nodule growth in soybean", Jpn. J. Soil Sci. Plant Nutr., Vol.85(1), pp.43-47 (2014) (in Japanese)