Blendy VJ solves the problem many Vjs, artists and projectionists face when more than one projector is needed to cover an area with light. It is usually impossible to make a perfect seamless alignment of multiple projectors side by side. Either you’ll have a gap between them, doubled light, or worse.
The solution is to overpose the projectors and fade out the edges of each one to make a seamless blend. Due to the nature of light, this fade is not a simple gradient, but a gamma curve. Blendy does all the math to get the perfect soft edge, for as many projectors as you need.
Blendy Vj is a tool aimed for experienced users (like VJs), and uses the Syphon framework to stand between any Syphon-enabled player (like Modul8 and many others) and the projection mapping tool (like MadMapper or Arena). Syphon is based on a revolutionary technology called IOSurface, available only on Mac OS X 10.6 (and above), which allows graphic applications to share textures in the graphics card, with near to zero overhead.