### Description
Convert RGB channels to HSI channels. See [this article](https://en.wikipedia.org/wiki/HSL_and_HSV) for a description of the HSI colormodel.

!!! seealso
    [RGBToYIQ](/Cxx/Images/RGBToYIQ) and [RGBToHSV](/Cxx/Images/RGBToHSV)
