Viewgum measures the colour of the pixels of the gum and computes the circular standard deviation of the hue component (see Directional Statistics and Hue). The larger this is, the more un-mixed the two colours are.
Viewgum is freeware. No user support is provided, but do not hesitate to email for assistance. Any comments, bug reports or suggestions for improvements are welcome.
This software is for testing purposes only and should not be used for patient evaluation or diagnosis. The software may still contain significant bugs. No responsibility will be assumed for the use or misuse of this software.