ImageGear for C and C++ on Windows v19.1 - Updated
Color Profile Groups
User Guide > How to Work with... > Color > Color Profile Manager > Color Profile Groups

ImageGear allows you to set and get the actual value of a color profile in every group. In spite of the fact that operations with color profiles from different groups are very similar, at a low level there are some differences in how profiles from different groups are processed.

ImageGear allocates 3 color profile groups:

When color processing is performed on an image, either a local or global color profile is used. When an image is exported or imported, its pixel data, converted from one color space to another, is described by the WCP associated with the image and corresponding profile from the ECP or ICP group.