Edge blending

Edge blending

Edge blending is the art of overlapping the edges of images beamed by multiple projectors to create a larger, brighter, higher-resolution displayed image. This approach is used all over the world in sectors from museums to education, and it creates huge, beautifully displayed images that look like they are projected as one whole.

How does it work? 

When displaying an image with multiple projectors some of it will overlap, and this is highly visible and not at all pleasing to the eye. Edge blending reduces the brightness of the overlapping component images in such a way that they blend in with the rest of the image, creating one big seamless display.  

In the past this was done differently. The images didn’t overlap at all, instead causing a small seam between the separate parts of the image. This seam was either black or white, but either way it was distracting and unsatisfying.

As the technology improved, the image used to overlap a little, but there were no changes to the brightness equalisation, so there was a bright, obvious divide between the images.  

It has been improved a great deal since was first introduced, and can now easily create large, beautiful, seamless images on different display surfaces. It is now even used in museums and art galleries to make big horizontal or vertical images.  

Product to use 

The easiest way of achieving effective edge blending is to use a projector that includes multiple small projectors inside that are used to show one whole image, instead of using multiple projectors and lining them up. There are many projectors with this built in function.

Alternatively, you could use add-on edge blending attachments. We sell processors specialising in edge blending and provide more information on this topic on our website. If you have more questions or need help deciding on the solution, you can always contact us and we will help you find exactly what you need. Even if you are not specifically looking for edge blending functionality, you might still want to consider it as edge blending is a valuable trait and may be required in the future – and is thus a great investment.  

If you are in need of a edge blending processor for your project be sure to check out our website or contact us directly for more information. Check our twitter for more images. It’s an amazing function and always something to look for when planing a projection system. We hope you find what you need!