STESYS2: Extended STESYS software for MS Windows

The STESYS2 software is a new version of the IBM PC software supporting int eractive stereological measurements. In comparison with the previous STESYS , it is enhanced by a number of useful options, e.g. on-line image input vi a a TV camera coupled with a microscope operating under MS Windows OS. The main advantage, when compared with other such software packages, is the des ign of the STESYS2 as a module of the freeware image processing system Imag e Tool which provides a user-friendly environment including a number of ima ge processing and preprocessing routines. Capabilities of the STESYS2 are i llustrated by a practical example: estimation of the surface area of capill aries in the terminal villi of human placenta by the Sandau spatial grid me thod.