Say it with pictures, a paper by Dennis Miller, features HighC proeminently among other image-to-sound converters.
Among others: "[HighC] is unique in its approach to working with image conversion and has a strong heritage from which many interesting compositions have been created."
CandyCovered Clown (from Latvia) has some nice words:
"its only 29.99 Euros, its simple but powerful&you can draw TITS innit if you like and then listen to results, its very basic but constantly evolving and the more geeks will support the developers the faster HighC becomes even more powerfull here is a small picture of my first "composition"".