Flower Shape Analysis System

Flower Shape Analysis System is a computer program for the area measurement on digital images. This software enables to measure area size of plant organs from images with easy operation. This software is developed by Takanari Tanabata. This software is provided as freeware.


Takanari Tanabata, Tetsuya Yamada, Yusuke Shimizu, Yoshihito Shinozaki, Motoki Kanekatsu and Makoto Takano, "Development of Automatic Segmentation Software for Efficient Measurement of Area on the Digital Images of Plant Organs", Hort. Res. (Japan), 9(4):501-506 (2010) doi:10.2503/hrj.9.501

Download and Installation


  • PC
    CPU: Intel® Pentium 4 and above
    Memory: 756MB (1024MB is recommended)

  • OS
    Windows XP / Windows Vista / Windows 7


  • Program: 'picasos.exe'.
    *This program file have checked by ESET Internet Security Version. (17662 20180704) at 2018/7/5.

How to use

32bit OS

Download install program 'picasos.exe', and open this program.

64bit OS

Please install in the following steps.

(1) Open 'picasos.exe'.

(2) You can see 'INSTALL.EXE' at the folder that you ran in step (1).

(3) Open 'INSTALL.EXE'.

(4) Delete files - 'INSTALL.EXE' and 'polyans_full.ico'-.


The manual is available with the link below as Adobe ®PDF document. You will need Adobe Reader® of later to open it.

Release notes

  • 2009/10/20 Flower Shape Analysis System Version 1.50 Released

  • 2010/8/1 Flower Shape Analysis System Version 1.52 Released