Edge Blend solutions for multiple projectors.

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.

Blendy VJ was developed in Brazil by Roger Sodré, of Studio Avante. Inspiration and testing by VJ Spetto, VJ Zaz and VJ Erms of United VJs. Coded with C++, OpenGL and GLSL, using the Cinder framework.

Edge Blend and Fulldome algorithms by Paul Bourke. Syphon developed by Tom Butterworth and Anton Marini. Hap Codec developed by Tom Butterworth and VidVox. SimpleGUI derived from on Marcin Ignac‘s Cinder block, which was inspired by Andreas Schlegel‘s ControlP5, with font by Yusuke Kamiyamane.

site link: http://www.blendyvj.com/