Starting with a blend zone that is a power of 2 close to 10\% of your single projector size can be a good place to start experimenting. The amount of overlap needed will vary based on many factors such as projector resolution and installation parameters. The act of blending both of these projectors will require an overlapping section.
Below is a diagram of a 1 x 2 array of projectors: In this example, the goal will be to blend two 1920 x 1080 projectors in a 1 x 2 array (1 unit tall and 2 units across). The best way to learn the basics of edge blending is through an example setup. For further reference and reading, please find that paper at the link below:Įdge blending using commodity projectors by Paul Bourke There is an excellent paper written by Paul Bourke that goes much more in-depth on the subject of edge blending than we will be going here. These principles of physics and additive color mixing are the basis for edge blending. Separately, these projectors output their assigned colors, but if you aim the projectors so that the colors overlap, the areas where these two projectors overlap you will actually have a turquoise color. Set up 2 projectors and have one project the color blue and have the other project the color green. A great example of the principles behind edge blending can be done relatively quickly. The idea of edge blending might be new to those who generally work with monitors and screen arrays. This act of blending the overlapping sections is called 'Edge blending'. This is done by creating arrays of projectors with overlapping edges that are blended together to create a seamless canvas. Video projectors are an incredibly flexible and are able to create infinitely large canvases. Outputting Content for Deployment and Performance